1 National Geodetic Survey, Retrieval Date = JUNE 2, 2003 GW2104 *********************************************************************** GW2104 DESIGNATION - E 503 GW2104 PID - GW2104 GW2104 STATE/COUNTY- VA/BEDFORD GW2104 USGS QUAD - BOONSBORO (1978) GW2104 GW2104 *CURRENT SURVEY CONTROL GW2104 ___________________________________________________________________ GW2104* NAD 83(1993)- 37 27 58.20673(N) 079 15 53.27181(W) ADJUSTED GW2104* NAVD 88 - 234.525 (meters) 769.44 (feet) ADJUSTED GW2104 ___________________________________________________________________ GW2104 X - 944,176.241 (meters) COMP GW2104 Y - -4,980,138.056 (meters) COMP GW2104 Z - 3,858,707.643 (meters) COMP GW2104 LAPLACE CORR- 1.87 (seconds) DEFLEC99 GW2104 ELLIP HEIGHT- 202.43 (meters) (05/17/02) GPS OBS GW2104 GEOID HEIGHT- -32.01 (meters) GEOID99 GW2104 DYNAMIC HT - 234.345 (meters) 768.85 (feet) COMP GW2104 MODELED GRAV- 979,857.3 (mgal) NAVD 88 GW2104 GW2104 HORZ ORDER - FIRST GW2104 VERT ORDER - FIRST CLASS II GW2104 ELLP ORDER - FOURTH CLASS II GW2104 GW2104.The horizontal coordinates were established by GPS observations GW2104.and adjusted by the National Geodetic Survey in July 2001. GW2104 GW2104.The orthometric height was determined by differential leveling GW2104.and adjusted by the National Geodetic Survey in June 1991. GW2104 GW2104.The X, Y, and Z were computed from the position and the ellipsoidal ht. GW2104 GW2104.The Laplace correction was computed from DEFLEC99 derived deflections. GW2104 GW2104.The ellipsoidal height was determined by GPS observations GW2104.and is referenced to NAD 83. GW2104 GW2104.The geoid height was determined by GEOID99. GW2104 GW2104.The dynamic height is computed by dividing the NAVD 88 GW2104.geopotential number by the normal gravity value computed on the GW2104.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 GW2104.degrees latitude (g = 980.6199 gals.). GW2104 GW2104.The modeled gravity was interpolated from observed gravity values. GW2104 GW2104; North East Units Scale Converg. GW2104;SPC VA S - 1,125,990.635 3,432,346.256 MT 0.99994688 -0 27 51.0 GW2104;UTM 17 - 4,148,001.686 653,449.987 MT 0.99989005 +1 03 20.6 GW2104 GW2104 SUPERSEDED SURVEY CONTROL GW2104 GW2104 ELLIP HT - 202.49 (m) (07/20/01) GP( ) 4 1 GW2104 GW2104.Superseded values are not recommended for survey control. GW2104.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. GW2104.See file dsdata.txt to determine how the superseded data were derived. GW2104 GW2104_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPB5345048002(NAD 83) GW2104_MARKER: DB = BENCH MARK DISK GW2104_SETTING: 66 = SET IN ROCK OUTCROP GW2104_STAMPING: E 503 1984 GW2104_MARK LOGO: NONE GW2104_MAGNETIC: N = NO MAGNETIC MATERIAL GW2104_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD GW2104+STABILITY: POSITION/ELEVATION WELL GW2104_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR GW2104+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2003 GW2104 GW2104 HISTORY - Date Condition Report By GW2104 HISTORY - 1984 MONUMENTED NGS GW2104 HISTORY - 20010404 GOOD GEOMET GW2104 HISTORY - 20030425 GOOD GEOMET GW2104 GW2104 STATION DESCRIPTION GW2104 GW2104'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984 GW2104'1.9 KM (1.2 MI) WNW FROM BOONSBORO. GW2104'1.9 KM (1.2 MI) WEST-NORTHWEST ALONG U.S. HIGHWAY 501 FROM THE UNITED GW2104'METHODIST CHURCH IN BOONSBORO TO THE MARK ON THE LEFT, AT THE JUNCTION GW2104'OF COUNTY ROAD 840, IN BEDROCK, 7.01 METERS (23.0 FT) WEST OF THE GW2104'CENTERLINE OF THE HIGHWAY, 14.63 METERS (48.0 FT) NORTH OF THE CENTER GW2104'OF COUNTY ROAD 840, 7.50 METERS (24.5 FT) SOUTH-SOUTHWEST OF A METAL GW2104'POST WITH A HIGHWAY REFLECTOR SIGN. GW2104'THE MARK IS 0.40 METERS E FROM A WITNESS POST. GW2104'THE MARK IS 0.61 M ABOVE HIGHWAY. GW2104 GW2104 STATION RECOVERY (2001) GW2104 GW2104'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2001 (DAR) GW2104'RECOVERED AS DESCRIBED GW2104' GW2104 GW2104 STATION RECOVERY (2003) GW2104 GW2104'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2003 (FJJ) GW2104'LARGE OAK OVERHANGING OVER THE STATION AND HALF OF THE ROAD. 1 National Geodetic Survey, Retrieval Date = JUNE 2, 2003 GW1473 *********************************************************************** GW1473 DESIGNATION - K 439 RESET 1972 GW1473 PID - GW1473 GW1473 STATE/COUNTY- VA/BEDFORD GW1473 USGS QUAD - BEDFORD (1989) GW1473 GW1473 *CURRENT SURVEY CONTROL GW1473 ___________________________________________________________________ GW1473* NAD 83(1986)- 37 19 47. (N) 079 30 37. (W) SCALED GW1473* NAVD 88 - 282.37 (+/-2cm) 926.4 (feet) VERTCON GW1473 ___________________________________________________________________ GW1473 GEOID HEIGHT- -32.21 (meters) GEOID99 GW1473 GW1473 VERT ORDER - THIRD (See Below) GW1473 GW1473.The horizontal coordinates were scaled from a topographic map and have GW1473.an estimated accuracy of +/- 6 seconds. GW1473 GW1473.The NAVD 88 height was computed by applying the VERTCON shift value to GW1473.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) GW1473.The vertical order pertains to the superseded datum. GW1473 GW1473.The geoid height was determined by GEOID99. GW1473 GW1473; North East Units Estimated Accuracy GW1473;SPC VA S - 1,111,050. 3,410,470. MT (+/- 180 meters Scaled) GW1473 GW1473 SUPERSEDED SURVEY CONTROL GW1473 GW1473 NGVD 29 - 282.60 (m) 927.2 (f) RESET 3 GW1473 GW1473.Superseded values are not recommended for survey control. GW1473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. GW1473.See file dsdata.txt to determine how the superseded data were derived. GW1473 GW1473_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPB319324(NAD 83) GW1473_MARKER: DB = BENCH MARK DISK GW1473_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT GW1473_STAMPING: K 439 RESET 1972 GW1473_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO GW1473+STABILITY: SURFACE MOTION GW1473 GW1473 HISTORY - Date Condition Report By GW1473 HISTORY - 1972 MONUMENTED NGS GW1473 GW1473 STATION DESCRIPTION GW1473 GW1473'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 GW1473'AT BEDFORD. GW1473'ABOUT 0.7 MILE EAST ALONG EAST MAIN STREET (U.S. HIGHWAY CITY GW1473'460) FROM THE COURTHOUSE IN BEDFORD, 66 FEET SOUTHEAST OF GW1473'CENTERLINE OF DRIVEWAY LEADING TO TEMPORARY POST OFFICE ANNEX, 25 GW1473'FEET SOUTHWEST OF THE CENTERLINE OF THE STREET, 14 FEET SOUTHEAST GW1473'OF EDGE OF STORM DRAIN, 1.7 FEET NORTHWEST OF HIGHWAY SIGN, 1 GW1473'FOOT SOUTHWEST OF CURB, 1 FOOT NORTHEAST OF EDGE OF SIDEWALK AND GW1473'IN GRASS AREA BETWEEN CURB AND SIDEWALK. MARK IS A 10 INCH GW1473'CONCRETE MONUMENT AND FLUSH WITH THE GROUND.