1 National Geodetic Survey, Retrieval Date = AUGUST 4, 2003 JV6675 *********************************************************************** JV6675 DESIGNATION - 19777 JV6675 PID - JV6675 JV6675 STATE/COUNTY- MD/MONTGOMERY JV6675 USGS QUAD - GAITHERSBURG (1979) JV6675 JV6675 *CURRENT SURVEY CONTROL JV6675 ___________________________________________________________________ JV6675* NAD 83(1991)- 39 07 33.04555(N) 077 14 05.41754(W) ADJUSTED JV6675* NAVD 88 - 123.0 (meters) 404. (feet) VERTCON JV6675 ___________________________________________________________________ JV6675 X - 1,094,744.913 (meters) COMP JV6675 Y - -4,832,135.649 (meters) COMP JV6675 Z - 4,003,222.442 (meters) COMP JV6675 LAPLACE CORR- 1.79 (seconds) DEFLEC99 JV6675 ELLIP HEIGHT- 91.24 (meters) (08/30/02) GPS OBS JV6675 GEOID HEIGHT- -31.73 (meters) GEOID99 JV6675 JV6675 HORZ ORDER - FIRST JV6675 ELLP ORDER - FOURTH CLASS II JV6675 JV6675.The horizontal coordinates were established by GPS observations JV6675.and adjusted by the National Geodetic Survey in November 1994. 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NAVD 88 height was computed by applying the VERTCON shift value to JV6675.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.The X, Y, and Z were computed from the position and the ellipsoidal ht. JV6675 JV6675.The Laplace correction was computed from DEFLEC99 derived deflections. JV6675 JV6675.The ellipsoidal height was determined by GPS observations JV6675.and is referenced to NAD 83. JV6675 JV6675.The geoid height was determined by GEOID99. JV6675 JV6675; North East Units Scale Converg. JV6675;SPC MD - 162,002.707 379,693.744 MT 0.99995934 -0 08 50.6 JV6675;SPC MD - 531,503.88 1,245,711.89 sFT 0.99995934 -0 08 50.6 JV6675;UTM 18 - 4,333,120.137 306,814.628 MT 1.00005955 -1 24 38.4 JV6675 JV6675 SUPERSEDED SURVEY CONTROL JV6675 JV6675 ELLIP HT - 91.21 (m) (04/01/98) GP( ) 4 1 JV6675 ELLIP HT - 91.16 (m) (11/14/94) GP( ) 4 2 JV6675 NAD 83(1991)- 39 07 33.04508(N) 077 14 05.41765(W) AD( ) 1 JV6675 ELLIP HT - 91.16 (m) (01/27/92) GP( ) 4 1 JV6675 NAD 83(1986)- 39 07 33.04495(N) 077 14 05.42768(W) AD( ) 1 JV6675 NGVD 29 - 123.2 (m) 404. (f) GPS OBS JV6675 JV6675.Superseded values are not recommended for survey control. JV6675.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV6675.See file dsdata.txt to determine how the superseded data were derived. JV6675 JV6675_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0681533120(NAD 83) 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 = AUGUST 4, 2003 JV6676 *********************************************************************** JV6676 DESIGNATION - 19778 JV6676 PID - JV6676 JV6676 STATE/COUNTY- MD/MONTGOMERY JV6676 USGS QUAD - ROCKVILLE (1984) JV6676 JV6676 *CURRENT SURVEY CONTROL JV6676 ___________________________________________________________________ JV6676* NAD 83(1991)- 39 06 48.22074(N) 077 13 21.89470(W) ADJUSTED JV6676* NAVD 88 - 116.7 (meters) 383. (feet) VERTCON JV6676 ___________________________________________________________________ JV6676 X - 1,095,956.320 (meters) COMP JV6676 Y - -4,832,750.431 (meters) COMP JV6676 Z - 4,002,146.070 (meters) COMP JV6676 LAPLACE CORR- 1.45 (seconds) DEFLEC99 JV6676 ELLIP HEIGHT- 85.04 (meters) (08/30/02) GPS OBS JV6676 GEOID HEIGHT- -31.71 (meters) GEOID99 JV6676 JV6676 HORZ ORDER - FIRST JV6676 ELLP ORDER - FOURTH CLASS II JV6676 JV6676.The horizontal coordinates were established by GPS observations JV6676.and adjusted by the National Geodetic Survey in November 1994. 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.The X, Y, and Z were computed from the position and the ellipsoidal ht. JV6676 JV6676.The Laplace correction was computed from DEFLEC99 derived deflections. JV6676 JV6676.The ellipsoidal height was determined by GPS observations JV6676.and is referenced to NAD 83. JV6676 JV6676.The geoid height was determined by GEOID99. JV6676 JV6676; North East Units Scale Converg. JV6676;SPC MD - 160,617.828 380,735.753 MT 0.99995842 -0 08 23.3 JV6676;SPC MD - 526,960.32 1,249,130.55 sFT 0.99995842 -0 08 23.3 JV6676;UTM 18 - 4,331,712.488 307,825.957 MT 1.00005475 -1 24 09.6 JV6676 JV6676 SUPERSEDED SURVEY CONTROL JV6676 JV6676 ELLIP HT - 84.99 (m) (04/01/98) GP( ) 4 1 JV6676 ELLIP HT - 84.96 (m) (11/14/94) GP( ) 4 2 JV6676 NAD 83(1991)- 39 06 48.22041(N) 077 13 21.89487(W) AD( ) 1 JV6676 ELLIP HT - 84.97 (m) (01/27/92) GP( ) 4 1 JV6676 NAD 83(1986)- 39 06 48.22014(N) 077 13 21.90503(W) AD( ) 1 JV6676 NGVD 29 - 116.9 (m) 384. (f) GPS OBS JV6676 JV6676.Superseded values are not recommended for survey control. JV6676.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV6676.See file dsdata.txt to determine how the superseded data were derived. JV6676 JV6676_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0782631712(NAD 83) 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 09, 2003 JV6676 JV6676 HISTORY - Date Condition Report By JV6676 HISTORY - 1989 MONUMENTED WSSC JV6676 HISTORY - 20030609 GOOD POWELL 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 1 National Geodetic Survey, Retrieval Date = AUGUST 4, 2003 JV7098 *********************************************************************** JV7098 DESIGNATION - 20306 JV7098 PID - JV7098 JV7098 STATE/COUNTY- MD/MONTGOMERY JV7098 USGS QUAD - SENECA (1994) JV7098 JV7098 *CURRENT SURVEY CONTROL JV7098 ___________________________________________________________________ JV7098* NAD 83(1991)- 39 05 50.43906(N) 077 15 14.07009(W) ADJUSTED JV7098* NAVD 88 - 107.5 (meters) 353. (feet) GPS OBS JV7098 ___________________________________________________________________ JV7098 X - 1,093,574.291 (meters) COMP JV7098 Y - -4,834,434.949 (meters) COMP JV7098 Z - 4,000,757.475 (meters) COMP JV7098 LAPLACE CORR- 2.06 (seconds) DEFLEC99 JV7098 ELLIP HEIGHT- 75.75 (meters) (08/30/02) GPS OBS JV7098 GEOID HEIGHT- -31.73 (meters) GEOID99 JV7098 JV7098 HORZ ORDER - FIRST JV7098 ELLP ORDER - FOURTH CLASS II JV7098 JV7098.The horizontal coordinates were established by GPS observations JV7098.and adjusted by the National Geodetic Survey in November 1994. JV7098 JV7098.The orthometric height was determined by GPS observations and a JV7098.high-resolution geoid model. JV7098 JV7098.The X, Y, and Z were computed from the position and the ellipsoidal ht. JV7098 JV7098.The Laplace correction was computed from DEFLEC99 derived deflections. JV7098 JV7098.The ellipsoidal height was determined by GPS observations JV7098.and is referenced to NAD 83. JV7098 JV7098.The geoid height was determined by GEOID99. JV7098 JV7098; North East Units Scale Converg. JV7098;SPC MD - 158,843.063 378,035.968 MT 0.99995730 -0 09 33.7 JV7098;SPC MD - 521,137.62 1,240,273.01 sFT 0.99995730 -0 09 33.7 JV7098;SPC VA N - 2,159,539.342 3,607,791.273 MT 0.99998339 +0 46 39.7 JV7098;UTM 18 - 4,329,997.469 305,087.435 MT 1.00006781 -1 25 18.7 JV7098 JV7098 SUPERSEDED SURVEY CONTROL JV7098 JV7098 NAD 83(1991)- 39 05 50.43888(N) 077 15 14.07061(W) AD( ) 1 JV7098 ELLIP HT - 75.66 (m) (01/11/94) GP( ) 4 1 JV7098 JV7098.Superseded values are not recommended for survey control. JV7098.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV7098.See file dsdata.txt to determine how the superseded data were derived. JV7098 JV7098_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0508729997(NAD 83) 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_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 - June 09, 2003 JV7098 JV7098 HISTORY - Date Condition Report By JV7098 HISTORY - 1993 MONUMENTED MSI JV7098 HISTORY - 20011113 GOOD DMW JV7098 HISTORY - 20030609 GOOD POWELL 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. 1 National Geodetic Survey, Retrieval Date = AUGUST 4, 2003 JV7102 *********************************************************************** JV7102 DESIGNATION - 20310 JV7102 PID - JV7102 JV7102 STATE/COUNTY- MD/MONTGOMERY JV7102 USGS QUAD - GERMANTOWN (1979) JV7102 JV7102 *CURRENT SURVEY CONTROL JV7102 ___________________________________________________________________ JV7102* NAD 83(1991)- 39 08 24.77909(N) 077 16 44.46599(W) ADJUSTED JV7102* NAVD 88 - 108.6 (meters) 356. (feet) GPS OBS JV7102 ___________________________________________________________________ JV7102 X - 1,090,794.396 (meters) COMP JV7102 Y - -4,831,985.255 (meters) COMP JV7102 Z - 4,004,450.851 (meters) COMP JV7102 LAPLACE CORR- 2.97 (seconds) DEFLEC99 JV7102 ELLIP HEIGHT- 76.80 (meters) (08/30/02) GPS OBS JV7102 GEOID HEIGHT- -31.80 (meters) GEOID99 JV7102 JV7102 HORZ ORDER - FIRST JV7102 ELLP ORDER - FOURTH CLASS II JV7102 JV7102.The horizontal coordinates were established by GPS observations JV7102.and adjusted by the National Geodetic Survey in January 1994. JV7102 JV7102.The orthometric height was determined by GPS observations and a JV7102.high-resolution geoid model. JV7102 JV7102.The X, Y, and Z were computed from the position and the ellipsoidal ht. JV7102 JV7102.The Laplace correction was computed from DEFLEC99 derived deflections. JV7102 JV7102.The ellipsoidal height was determined by GPS observations JV7102.and is referenced to NAD 83. JV7102 JV7102.The geoid height was determined by GEOID99. JV7102 JV7102; North East Units Scale Converg. JV7102;SPC MD - 163,608.764 375,878.414 MT 0.99996047 -0 10 30.4 JV7102;SPC MD - 536,773.09 1,233,194.43 sFT 0.99996047 -0 10 30.4 JV7102;UTM 18 - 4,334,810.123 303,035.232 MT 1.00007771 -1 26 20.5 JV7102 JV7102 SUPERSEDED SURVEY CONTROL JV7102 JV7102 ELLIP HT - 76.72 (m) (01/11/94) GP( ) 4 1 JV7102 JV7102.Superseded values are not recommended for survey control. JV7102.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV7102.See file dsdata.txt to determine how the superseded data were derived. JV7102 JV7102_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0303534810(NAD 83) JV7102_MARKER: DD = SURVEY DISK JV7102_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT JV7102_STAMPING: 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 - June 09, 2003 JV7102 JV7102 HISTORY - Date Condition Report By JV7102 HISTORY - 1993 MONUMENTED MSI JV7102 HISTORY - 20030609 GOOD POWELL 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. 1 National Geodetic Survey, Retrieval Date = AUGUST 4, 2003 JV7104 *********************************************************************** JV7104 DESIGNATION - 20312 JV7104 PID - JV7104 JV7104 STATE/COUNTY- MD/MONTGOMERY JV7104 USGS QUAD - GAITHERSBURG (1979) JV7104 JV7104 *CURRENT SURVEY CONTROL JV7104 ___________________________________________________________________ JV7104* NAD 83(1991)- 39 07 48.69432(N) 077 13 47.34466(W) ADJUSTED JV7104* NAVD 88 - 131.4 (meters) 431. (feet) GPS OBS JV7104 ___________________________________________________________________ JV7104 X - 1,095,102.426 (meters) COMP JV7104 Y - -4,831,749.064 (meters) COMP JV7104 Z - 4,003,602.112 (meters) COMP JV7104 LAPLACE CORR- 1.70 (seconds) DEFLEC99 JV7104 ELLIP HEIGHT- 99.65 (meters) (08/30/02) GPS OBS JV7104 GEOID HEIGHT- -31.73 (meters) GEOID99 JV7104 JV7104 HORZ ORDER - FIRST JV7104 ELLP ORDER - FOURTH CLASS II JV7104 JV7104.The horizontal coordinates were established by GPS observations JV7104.and adjusted by the National Geodetic Survey in January 1994. JV7104 JV7104.The orthometric height was determined by GPS observations and a JV7104.high-resolution geoid model. JV7104 JV7104.The X, Y, and Z were computed from the position and the ellipsoidal ht. JV7104 JV7104.The Laplace correction was computed from DEFLEC99 derived deflections. JV7104 JV7104.The ellipsoidal height was determined by GPS observations JV7104.and is referenced to NAD 83. JV7104 JV7104.The geoid height was determined by GEOID99. JV7104 JV7104; North East Units Scale Converg. JV7104;SPC MD - 162,484.163 380,129.054 MT 0.99995968 -0 08 39.3 JV7104;SPC MD - 533,083.46 1,247,140.07 sFT 0.99995968 -0 08 39.3 JV7104;UTM 18 - 4,333,591.925 307,260.492 MT 1.00005743 -1 24 27.5 JV7104 JV7104 SUPERSEDED SURVEY CONTROL JV7104 JV7104 ELLIP HT - 99.56 (m) (01/11/94) GP( ) 4 1 JV7104 JV7104.Superseded values are not recommended for survey control. JV7104.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JV7104.See file dsdata.txt to determine how the superseded data were derived. JV7104 JV7104_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0726033592(NAD 83) 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 - June 09, 2003 JV7104 JV7104 HISTORY - Date Condition Report By JV7104 HISTORY - 1993 MONUMENTED MSI JV7104 HISTORY - 20030609 GOOD POWELL 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.