1 National Geodetic Survey, Retrieval Date = DECEMBER 8, 2003 JV1020 *********************************************************************** JV1020 DESIGNATION - 1513 JV1020 PID - JV1020 JV1020 STATE/COUNTY- MD/PRINCE GEORGES JV1020 USGS QUAD - BELTSVILLE (1979) JV1020 JV1020 *CURRENT SURVEY CONTROL JV1020 ___________________________________________________________________ JV1020* NAD 83(1986)- 39 03 24. (N) 076 55 21. (W) SCALED JV1020* NAVD 88 - 79.346 (meters) 260.32 (feet) ADJUSTED JV1020 ___________________________________________________________________ JV1020 GEOID HEIGHT- -32.10 (meters) GEOID99 JV1020 DYNAMIC HT - 79.304 (meters) 260.18 (feet) COMP JV1020 MODELED GRAV- 980,097.8 (mgal) NAVD 88 JV1020 JV1020 VERT ORDER - SECOND CLASS I JV1020 JV1020.The horizontal coordinates were scaled from a topographic map and have JV1020.an estimated accuracy of +/- 6 seconds. JV1020 JV1020.The orthometric height was determined by differential leveling JV1020.and adjusted by the National Geodetic Survey in June 1991. JV1020 JV1020.The geoid height was determined by GEOID99. 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 MT (+/- 180 meters Scaled) JV1020 JV1020 SUPERSEDED SURVEY CONTROL JV1020 JV1020 NGVD 29 (??/??/??) 79.559 (m) 261.02 (f) ADJUSTED 2 0 JV1020 JV1020.Superseded values are not recommended for survey control. JV1020.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV1020.See file dsdata.txt to determine how the superseded data were derived. JV1020 JV1020_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ336248(NAD 83) 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 = DECEMBER 8, 2003 JV0676 *********************************************************************** JV0676 DESIGNATION - C 16 JV0676 PID - JV0676 JV0676 STATE/COUNTY- MD/PRINCE GEORGES JV0676 USGS QUAD - BELTSVILLE (1979) JV0676 JV0676 *CURRENT SURVEY CONTROL JV0676 ___________________________________________________________________ JV0676* NAD 83(1986)- 39 02 05. (N) 076 54 22. (W) SCALED JV0676* NAVD 88 - 36.305 (meters) 119.11 (feet) ADJUSTED JV0676 ___________________________________________________________________ JV0676 GEOID HEIGHT- -32.14 (meters) GEOID99 JV0676 DYNAMIC HT - 36.286 (meters) 119.05 (feet) COMP JV0676 MODELED GRAV- 980,103.8 (mgal) NAVD 88 JV0676 JV0676 VERT ORDER - FIRST CLASS I JV0676 JV0676.The horizontal coordinates were scaled from a topographic map and have JV0676.an estimated accuracy of +/- 6 seconds. JV0676 JV0676.The orthometric height was determined by differential leveling JV0676.and adjusted by the National Geodetic Survey in June 1991. JV0676.WARNING-Repeat measurements at this control monument indicate possible JV0676.vertical movement. JV0676 JV0676.The geoid height was determined by GEOID99. 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 - 151,870. 408,130. MT (+/- 180 meters Scaled) JV0676 JV0676 SUPERSEDED SURVEY CONTROL JV0676 JV0676 NGVD 29 (??/??/??) 36.532 (m) 119.86 (f) ADJUSTED 1 1 JV0676 JV0676.Superseded values are not recommended for survey control. JV0676.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV0676.See file dsdata.txt to determine how the superseded data were derived. JV0676 JV0676_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ350223(NAD 83) JV0676_MARKER: DB = BENCH MARK DISK JV0676_SETTING: 38 = 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 22, 2002 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 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. 1 National Geodetic Survey, Retrieval Date = DECEMBER 8, 2003 AJ7981 *********************************************************************** AJ7981 CBN - This is a Cooperative Base Network Control Station. AJ7981 DESIGNATION - CALVERTON AJ7981 PID - AJ7981 AJ7981 STATE/COUNTY- MD/PRINCE GEORGES AJ7981 USGS QUAD - BELTSVILLE (1979) AJ7981 AJ7981 *CURRENT SURVEY CONTROL AJ7981 ___________________________________________________________________ AJ7981* NAD 83(1991)- 39 02 59.49697(N) 076 55 59.38023(W) ADJUSTED AJ7981* NAVD 88 - 59.916 (meters) 196.57 (feet) ADJUSTED AJ7981 ___________________________________________________________________ AJ7981 X - 1,121,363.466 (meters) COMP AJ7981 Y - -4,831,437.804 (meters) COMP AJ7981 Z - 3,996,634.783 (meters) COMP AJ7981 LAPLACE CORR- -3.93 (seconds) DEFLEC99 AJ7981 ELLIP HEIGHT- 27.86 (meters) (02/12/02) GPS OBS AJ7981 GEOID HEIGHT- -32.08 (meters) GEOID99 AJ7981 DYNAMIC HT - 59.885 (meters) 196.47 (feet) COMP AJ7981 MODELED GRAV- 980,098.0 (mgal) NAVD 88 AJ7981 AJ7981 HORZ ORDER - A AJ7981 VERT ORDER - SECOND CLASS I AJ7981 ELLP ORDER - FOURTH CLASS I AJ7981 AJ7981.The horizontal coordinates were established by GPS observations AJ7981.and adjusted by the National Geodetic Survey in February 2002. AJ7981 AJ7981.The orthometric height was determined by differential leveling AJ7981.and adjusted by the National Geodetic Survey in November 2003. AJ7981.No vertical observational check was made to the 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 DEFLEC99 derived deflections. AJ7981 AJ7981.The ellipsoidal height was determined by GPS observations AJ7981.and is referenced to NAD 83. AJ7981 AJ7981.The geoid height was determined by GEOID99. 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; North East Units Scale Converg. AJ7981;SPC MD - 153,543.353 405,785.677 MT 0.99995445 +0 02 31.0 AJ7981;SPC MD - 503,750.15 1,331,315.18 sFT 0.99995445 +0 02 31.0 AJ7981;UTM 18 - 4,324,087.942 332,715.115 MT 0.99994459 -1 13 05.4 AJ7981 AJ7981 SUPERSEDED SURVEY CONTROL AJ7981 AJ7981.No superseded survey control is available for this station. AJ7981 AJ7981_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3271524088(NAD 83) AJ7981_MARKER: DD = SURVEY DISK AJ7981_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT AJ7981_STAMPING: CALVERTON 1992 AJ7981_MARK LOGO: MDSHA AJ7981_MAGNETIC: O = OTHER; SEE DESCRIPTION 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 - January 30, 2002 AJ7981 AJ7981 HISTORY - Date Condition Report By AJ7981 HISTORY - 1992 MONUMENTED MDSHA AJ7981 HISTORY - 20000412 GOOD MDSHA AJ7981 HISTORY - 20020130 GOOD MDSHA 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. 1 National Geodetic Survey, Retrieval Date = DECEMBER 8, 2003 JV0877 *********************************************************************** JV0877 DESIGNATION - POWDER RM 2 JV0877 PID - JV0877 JV0877 STATE/COUNTY- MD/PRINCE GEORGES JV0877 USGS QUAD - BELTSVILLE (1979) JV0877 JV0877 *CURRENT SURVEY CONTROL JV0877 ___________________________________________________________________ JV0877* NAD 83(1991)- 39 03 51.21485(N) 076 55 17.44935(W) ADJUSTED JV0877* NAVD 88 - 93.709 (meters) 307.44 (feet) ADJUSTED JV0877 ___________________________________________________________________ JV0877 LAPLACE CORR- -4.00 (seconds) DEFLEC99 JV0877 GEOID HEIGHT- -32.09 (meters) GEOID99 JV0877 DYNAMIC HT - 93.659 (meters) 307.28 (feet) COMP JV0877 MODELED GRAV- 980,095.8 (mgal) NAVD 88 JV0877 JV0877 HORZ ORDER - THIRD JV0877 VERT ORDER - SECOND CLASS I JV0877 JV0877.The horizontal coordinates were established by classical geodetic methods JV0877.and adjusted by the National Geodetic Survey in January 1992. JV0877 JV0877.The orthometric height was determined by differential leveling JV0877.and adjusted by the National Geodetic Survey in June 1991. JV0877 JV0877.The Laplace correction was computed from DEFLEC99 derived deflections. JV0877 JV0877.The geoid height was determined by GEOID99. JV0877 JV0877.The dynamic height is computed by dividing the NAVD 88 JV0877.geopotential number by the normal gravity value computed on the JV0877.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 JV0877.degrees latitude (g = 980.6199 gals.). JV0877 JV0877.The modeled gravity was interpolated from observed gravity values. JV0877 JV0877; North East Units Scale Converg. JV0877;SPC MD - 155,138.955 406,792.529 MT 0.99995524 +0 02 57.3 JV0877;SPC MD - 508,985.05 1,334,618.49 sFT 0.99995524 +0 02 57.3 JV0877;UTM 18 - 4,325,660.993 333,756.805 MT 0.99994031 -1 12 40.3 JV0877 JV0877 SUPERSEDED SURVEY CONTROL JV0877 JV0877 NAD 83(1986)- 39 03 51.21379(N) 076 55 17.45964(W) AD( ) 3 JV0877 NGVD 29 (??/??/??) 93.923 (m) 308.15 (f) ADJUSTED 2 0 JV0877 JV0877.Superseded values are not recommended for survey control. JV0877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV0877.See file dsdata.txt to determine how the superseded data were derived. JV0877 JV0877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3375725661(NAD 83) JV0877_MARKER: DR = REFERENCE MARK DISK JV0877_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT JV0877_STAMPING: POWDER NO 2 1957 JV0877_MARK LOGO: CGS JV0877_MAGNETIC: O = OTHER; SEE DESCRIPTION JV0877_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO JV0877+STABILITY: SURFACE MOTION JV0877_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR JV0877+SATELLITE: SATELLITE OBSERVATIONS - January 30, 2002 JV0877 JV0877 HISTORY - Date Condition Report By JV0877 HISTORY - 1957 MONUMENTED CGS JV0877 HISTORY - 1957 GOOD WSSC JV0877 HISTORY - 1970 GOOD NGS JV0877 HISTORY - 20020130 GOOD MDSHA JV0877 JV0877 STATION DESCRIPTION JV0877 JV0877'DESCRIBED BY WASH SUBURB SAN COMM 1957 JV0877'2 MI NW FROM BELTSVILLE. JV0877'0.1 MILE SOUTH ALONG U.S. HIGHWAY 1 FROM THE RAILROAD DEPOT AT JV0877'BELTSVILLE, PRINCE GEORGES COUNTY, TO A TRAFFIC LIGHT AT THE JV0877'INTERSECTION OF POWDER MILL ROAD, THENCE 1.45 MILES WEST TO THE JV0877'INTERSECTION OF OLD GUN POWDER ROAD AND THENCE 0.9 MILE NORTH JV0877'ALONG OLD GUN POWDER ROAD, 104.09 FEET NORTHWEST OF THE TRIANGULATION JV0877'STATION, AND 30 FEET WEST OF THE CENTERLINE OF THE HARD SURFACE JV0877'ROAD. A STANDARD REFERENCE-MARK DISK, STAMPED POWDER NO 2 1957 JV0877'AND SET IN THE TOP OF A CONCRETE POST PROJECTING ABOUT 4 INCHES JV0877'ABOVE THE GROUND. JV0877 JV0877 STATION RECOVERY (1970) JV0877 JV0877'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 JV0877'RECOVERED IN GOOD CONDITION. JV0877 JV0877 STATION RECOVERY (2002) JV0877 JV0877'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK) JV0877'THE STATION WAS RECOVERED IN GOOD CONDITION. THE TO REACH SECTION OF JV0877'THE DESCRIPTION IS ADQUATE. THE STATION IS 104.1 FT (31.7 M) NORTHWEST JV0877'OF THE TRIANGULATION STATION, 31.7 FT (9.7 M) WEST OF THE CENTER LINE JV0877'OF THE ROAD, 18.5 FT (5.6 M) SOUTH OF THE PROJECTED CENTER LINE OF A JV0877'GRAVEL DRIVEWAY LEADING EAST TO HOUSE 12221, 89.5 FT (27.3 M) NORTH JV0877'OF POWER POLE NUMBER 319665, A STANDARD REFERENCE-MARK DISK, STAMPED JV0877'POWDER NO 2 1957 AND SET IN THE TOP OF A CONCRETE MONUMENT PROJECTING JV0877'2 INCH (5 CM) AND ABOUT 4 FT (1.2 M) ABOVE THE LEVEL OF THE ROAD.