National Geodetic Survey, Retrieval Date = JUNE 10, 2002 HV9275 *********************************************************************** HV9275 DESIGNATION - GPS 64 HV9275 PID - HV9275 HV9275 STATE/COUNTY- VA/FAIRFAX HV9275 USGS QUAD - ALEXANDRIA (1994) HV9275 HV9275 *CURRENT SURVEY CONTROL HV9275 ___________________________________________________________________ HV9275* NAD 83(1993)- 38 47 26.67707(N) 077 02 29.07015(W) ADJUSTED HV9275* NAVD 88 - 2.3 (meters) 8. (feet) VERTCON HV9275 ___________________________________________________________________ HV9275 X - 1,116,276.001 (meters) COMP HV9275 Y - -4,851,115.306 (meters) COMP HV9275 Z - 3,974,218.299 (meters) COMP HV9275 LAPLACE CORR- -3.34 (seconds) DEFLEC99 HV9275 ELLIP HEIGHT- -29.93 (meters) GPS OBS HV9275 GEOID HEIGHT- -32.21 (meters) GEOID99 HV9275 HV9275 HORZ ORDER - SECOND HV9275 ELLP ORDER - FOURTH CLASS II HV9275 HV9275.The horizontal coordinates were established by GPS observations HV9275.and adjusted by the National Geodetic Survey in November 1994. HV9275 HV9275.The NAVD 88 height was computed by applying the VERTCON shift value to HV9275.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) HV9275 HV9275.The X, Y, and Z were computed from the position and the ellipsoidal ht. HV9275 HV9275.The Laplace correction was computed from DEFLEC99 derived deflections. HV9275 HV9275.The ellipsoidal height was determined by GPS observations HV9275.and is referenced to NAD 83. HV9275 HV9275.The geoid height was determined by GEOID99. HV9275 HV9275; North East Units Scale Converg. HV9275;SPC VA N - 2,125,778.504 3,626,712.579 MT 0.99995294 +0 54 37.2 HV9275;SPC MD - 124,777.896 396,402.576 MT 0.99995094 -0 01 33.6 HV9275;SPC MD - 409,375.48 1,300,530.78 sFT 0.99995094 -0 01 33.6 HV9275;UTM 18 - 4,295,534.781 322,703.224 MT 0.99998709 -1 16 45.2 HV9275 HV9275 SUPERSEDED SURVEY CONTROL HV9275 HV9275 ELLIP HT - -29.95 (m) GP( ) 4 2 HV9275 NAD 83(1993)- 38 47 26.67511(N) 077 02 29.07293(W) AD( ) 2 HV9275 ELLIP HT - -30.55 (m) GP( ) 4 1 HV9275 NAD 83(1993)- 38 47 26.67745(N) 077 02 29.06942(W) AD( ) 2 HV9275 NGVD 29 - 2.5 (m) 8. (f) GPS OBS HV9275 HV9275.Superseded values are not recommended for survey control. HV9275.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV9275.See file dsdata.txt to determine how the superseded data were derived. HV9275 HV9275_MARKER: DD = SURVEY DISK HV9275_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT HV9275_STAMPING: GPS 64 1990 HV9275_MARK LOGO: VA-059 HV9275_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET HV9275_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO HV9275+STABILITY: SURFACE MOTION HV9275_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR HV9275+SATELLITE: SATELLITE OBSERVATIONS - September 07, 1991 HV9275 HV9275 HISTORY - Date Condition Report By HV9275 HISTORY - 1990 MONUMENTED RDA HV9275 HISTORY - 19910907 GOOD WHGAI HV9275 HV9275 STATION DESCRIPTION HV9275 HV9275'DESCRIBED BY W H GORDON ASSC 1991 HV9275'THE STATION IS LOCATED IN SOUTHEASTERN FAIRFAX COUNTY, VIRGINIA ABOUT HV9275'1500.0 FEET (457.2 M) PLUS OR MINUS SOUTHWEST OF WOODROW WILSON HV9275'MEMORIAL BRIDGE. TO REACH THE STATION FROM THE INTERSECTION OF HV9275'INTERSTATE 95 AND U.S. ROUTE 1 PROCEED NORTHEAST ALONG U.S. ROUTE 1 HV9275'0.3 MILES (0.5 KM) TO ITS INTERSECTION WITH FRANKLIN STREET. TURN HV9275'RIGHT AND PROCEED EAST ALONG FRANKLIN STREET 0.4 MILE (0.6 KM) TO ITS HV9275'INTERSECTION WITH ROYAL COURT. TURN RIGHT AND PROCEED SOUTHWEST HV9275'ALONG ROYAL COURT 0.2 MILE (0.3 KM) TO ITS INTERSECTION WITH JONES HV9275'POINT PARK DRIVE. TURN LEFT AND PROCEED EAST ALONG JONES POINT PARK HV9275'DRIVE 0.2 MILE (0.3 KM) TO ITS INTERSECTION WITH PARK ROAD. TURN HV9275'RIGHT AND PROCEED SOUTHWEST ALONG PARK ROAD 0.1 MILE (0.2 KM) TO HV9275'JONES POINT PARK AND THE STATION ON THE RIGHT IN THE PICNIC AREA. HV9275'THE STATION IS A STANDARD FAIRFAX COUNTY SURVEY DISK SET IN CONCRETE HV9275'FLUSH WITH THE GROUND AND IS STAMPED GPS 64 1990. THE STATION IS HV9275'159.7 FEET (48.7 M) PLUS OR MINUS SOUTHEAST FROM THE CENTERLINE OF A HV9275'GRAVEL DRIVEWAY ON A 90 DEGREE ANGLE WITH TRI-MAPLE, 128.19 FEET HV9275'(39.07 M) SOUTHWEST OF A 16D NAIL IN A 48 INCH TRI-MAPLE TREE, 135.36 HV9275'FEET (41.26 M) NORTHWEST OF A 16D NAIL IN A 28 INCH MAPLE TREE, AND HV9275'224.09 FEET (68.30 M) SOUTHEAST OF A 16D NAIL IN A 12 INCH MAPLE HV9275'TREE. *** retrieval complete. Elapsed Time = 00:00:07 ----------------------------------------------------------------------------- - This listing contains control for which complete digital - - data sheets where not provided. The complete data sheets were - - not provided for the reason listed below. The reason below is - - associated with a horizontal control Nonpub code shown under - - the heading 'H' and/or a vertical control Nonpub code shown under - - the heading 'v' - - - - The format of the records are as follows: - - Pid = Station Permanent Identifier) - - Name = Station Designation - - Lat = Approx. Latitude (Degrees, Minutes, truncated Seconds) - - Lon = Approx. Longitude (Degrees, Minutes, truncated Seconds) - - O = Horizontal Order - - o = Vertical Order - - H = Horizontal Nonpub Code - - v = Vertical Nonpub Code - - - - H Nonpub HORIZONTAL CONTROL NONPUB REASON - - -------- -------------------------------- - - X Surface Mark Reported Destroyed - - Y Surface and underground mark reported destroyed - - A A-Order Horizontal mark not tied to an adjusted HARN - - C C-Nonoperational CORS Station - - W Weakly determined position. - - P Purpose of position is not for network control - - D No Descriptive Text available - - R Restricted position - - - - v Nonpub VERTICAL CONTROL NONPUB REASON - - -------- ------------------------------ - - X Surface Mark Reported Destroyed - - Y Surface and underground mark reported destroyed - - F Bench Mark not yet adjusted. - - D No Descriptive Text available - - Z Presumed destroyed - - R Restricted elevation - - - - - - NOTE - Stations found in this listing may still have a valid - - datasheet produced by use of other publishable values. - - For example, an ADJUSTED height may be non-publishable - - but a good GPS height might be found on the datasheet. - - This listing does not imply that values found on the datasheet - - are restricted. If it's on the datasheet, use it. - - - ----------------------------------------------------------------------------- Pid Name Lat Lon Elev O o Hv ------ ------------------------------ ---------- ----------- -------- - - -- >HV9275 GPS 64 38 47 26.6/077 02 29.0 2.5 2 F