1 National Geodetic Survey, Retrieval Date = JULY 1, 2005 HV9631 *********************************************************************** HV9631 DESIGNATION - GPS 33 AZ MK HV9631 PID - HV9631 HV9631 STATE/COUNTY- VA/FAIRFAX HV9631 USGS QUAD - MOUNT VERNON (1983) HV9631 HV9631 *CURRENT SURVEY CONTROL HV9631 ___________________________________________________________________ HV9631* NAD 83(1993)- 38 44 34.89681(N) 077 04 35.79328(W) ADJUSTED HV9631* NAVD 88 - 11.587 (meters) 38.02 (feet) ADJUSTED HV9631 ___________________________________________________________________ HV9631 X - 1,114,038.819 (meters) COMP HV9631 Y - -4,855,040.033 (meters) COMP HV9631 Z - 3,970,094.008 (meters) COMP HV9631 LAPLACE CORR- -2.55 (seconds) DEFLEC99 HV9631 ELLIP HEIGHT- -20.62 (meters) (05/17/02) GPS OBS HV9631 GEOID HEIGHT- -32.28 (meters) GEOID03 HV9631 DYNAMIC HT - 11.581 (meters) 38.00 (feet) COMP HV9631 MODELED GRAV- 980,071.7 (mgal) NAVD 88 HV9631 HV9631 HORZ ORDER - SECOND HV9631 VERT ORDER - THIRD HV9631 ELLP ORDER - FOURTH CLASS II HV9631 HV9631.The horizontal coordinates were established by GPS observations HV9631.and adjusted by the National Geodetic Survey in November 1994. HV9631 HV9631.The orthometric height was determined by differential leveling HV9631.and adjusted by the National Geodetic Survey in September 2004. HV9631.No vertical observational check was made to the station. HV9631 HV9631.The X, Y, and Z were computed from the position and the ellipsoidal ht. HV9631 HV9631.The Laplace correction was computed from DEFLEC99 derived deflections. HV9631 HV9631.The ellipsoidal height was determined by GPS observations HV9631.and is referenced to NAD 83. HV9631 HV9631.The geoid height was determined by GEOID03. HV9631 HV9631.The dynamic height is computed by dividing the NAVD 88 HV9631.geopotential number by the normal gravity value computed on the HV9631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV9631.degrees latitude (g = 980.6199 gals.). HV9631 HV9631.The modeled gravity was interpolated from observed gravity values. HV9631 HV9631; North East Units Scale Factor Converg. HV9631;SPC VA N - 2,120,434.311 3,623,736.937 MT 0.99995078 +0 53 18.1 HV9631;SPC MD - 119,483.046 393,339.996 MT 0.99995252 -0 02 53.1 HV9631;SPC MD - 392,003.96 1,290,482.97 sFT 0.99995252 -0 02 53.1 HV9631;UTM 18 - 4,290,307.922 319,525.497 MT 1.00000110 -1 17 59.8 HV9631 HV9631! - Elev Factor x Scale Factor = Combined Factor HV9631!SPC VA N - 1.00000324 x 0.99995078 = 0.99995402 HV9631!SPC MD - 1.00000324 x 0.99995252 = 0.99995576 HV9631!UTM 18 - 1.00000324 x 1.00000110 = 1.00000434 HV9631 HV9631: Primary Azimuth Mark Grid Az HV9631:SPC VA N - GPS 33 153 54 05.8 HV9631:SPC MD - GPS 33 154 50 17.0 HV9631:UTM 18 - GPS 33 156 05 23.7 HV9631 HV9631|---------------------------------------------------------------------| HV9631| PID Reference Object Distance Geod. Az | HV9631| dddmmss.s | HV9631| HV9630 GPS 33 426.643 METERS 1544723.9 | HV9631|---------------------------------------------------------------------| HV9631 HV9631 SUPERSEDED SURVEY CONTROL HV9631 HV9631 NAD 83(1993)- 38 44 34.89472(N) 077 04 35.79585(W) AD( ) 2 HV9631 ELLIP H (09/27/93) -21.23 (m) GP( ) 4 1 HV9631 NGVD 29 (09/27/93) 11.9 (m) 39. (f) GPS OBS HV9631 HV9631.Superseded values are not recommended for survey control. HV9631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV9631.See file dsdata.txt to determine how the superseded data were derived. HV9631 HV9631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1952590308(NAD 83) HV9631_MARKER: DD = SURVEY DISK HV9631_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT HV9631_SP_SET: CONCRETE POST HV9631_STAMPING: GPS 33 AZ MK 1990 HV9631_MARK LOGO: VA-059 HV9631_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET HV9631_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO HV9631+STABILITY: SURFACE MOTION HV9631_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR HV9631+SATELLITE: SATELLITE OBSERVATIONS - January 15, 1990 HV9631 HV9631 HISTORY - Date Condition Report By HV9631 HISTORY - 1990 MONUMENTED RDA HV9631 HISTORY - 19900115 GOOD RDA HV9631 HISTORY - 20050528 GOOD GEOCAC HV9631 HV9631 STATION DESCRIPTION HV9631 HV9631'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1990 HV9631'THE STATION IS LOCATED IN SOUTHEASTERN FAIRFAX COUNTY, VIRGINIA ABOUT HV9631'3.5 MILES (5.6 KM) NORTHEAST OF THE VILLAGE OF WOODLAWN. TO REACH HV9631'THE STATION FROM THE INTERSECTION OF U.S. ROUTE 1 AND SHERWOOD HALL HV9631'LANE PROCEED NORTHEAST ALONG SHERWOOD HALL LANE 0.5 MILE (0.8 KM) TO HV9631'ITS INTERSECTION WITH PARKERS LANE. TURN RIGHT AND PROCEED SOUTHEAST HV9631'ALONG PARKERS LANE 0.3 MILE (0.5 KM) TO THE STATION ON THE RIGHT JUST HV9631'PAST MOUNT VERNON HOSPITAL AND BEFORE HINSON FARM ROAD. TO REACH HV9631'THE AZIMUTH MARK FROM THE STATION PROCEED NORTH ALONG PARKERS LANE HV9631'0.25 MILE (0.40 KM) TO THE LIBRARY AND THE MARK ON THE RIGHT. THE HV9631'AZIMUTH MARK IS A STANDARD FAIRFAX COUNTY SURVEY DISK SET IN CONCRETE HV9631'FLUSH WITH THE GROUND AND STAMPED GPS 33 AZ MK 1990. THE MARK IS HV9631'12.07 FEET (3.68 M) EAST FROM THE FACE OF CURB OF PARKERS LANE, 15.18 HV9631'FEET (4.63 M) NORTHEAST OF A DRILL HOLE IN TOP OF A STORM CATCH HV9631'BASIN, 56.60 FEET (17.25 M) NORTHWEST OF A 16D NAIL IN A 12 INCH PIN HV9631'OAK TREE, AND 89.73 FEET (27.35 M) SOUTHWEST OF A CHISELED X ON A HV9631'BOLT OF LIGHT POLE BASE. THE AZIMUTH MARK IS 426.648 METERS HV9631'(1399.761 FT) FROM THE STATION. HV9631 HV9631 STATION RECOVERY (1990) HV9631 HV9631'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1990 HV9631'THE STATION IS LOCATED IN SOUTHEASTERN FAIRFAX COUNTY, VIRGINIA ABOUT HV9631'3.5 MILES NORTHEAST OF THE VILLAGE OF WOODLAWN. TO REACH THE AZIMUTH HV9631'MARK FROM THE STATION PROCEED NORTH ALONG PARKERS LANE FOR 0.25 HV9631'MILE TO LIBRARY AND THE MARK ON THE RIGHT, IN TOP OF A CONCRETE HV9631'MONUMENT FLUSH WITH THE GROUND. HV9631 HV9631 STATION RECOVERY (2005) HV9631 HV9631'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV9631'FOUND AS DESCRIBED. HV9631' HV9631'DRILL HOLE AND CHISELED X OBSERVED BUT DISTANCES TO STATION NOT HV9631'VERIFIED. NAIL IN PIN OAK TREE NOT LOOKED FOR. 1 National Geodetic Survey, Retrieval Date = JULY 1, 2005 HV9695 *********************************************************************** HV9695 DESIGNATION - MEMORIAL AZ MK 1 HV9695 PID - HV9695 HV9695 STATE/COUNTY- VA/FAIRFAX HV9695 USGS QUAD - ALEXANDRIA (1994) HV9695 HV9695 *CURRENT SURVEY CONTROL HV9695 ___________________________________________________________________ HV9695* NAD 83(1993)- 38 46 09.76940(N) 077 04 54.53378(W) ADJUSTED HV9695* NAVD 88 - 68.775 (meters) 225.64 (feet) ADJUSTED HV9695 ___________________________________________________________________ HV9695 X - 1,113,198.259 (meters) COMP HV9695 Y - -4,853,399.710 (meters) COMP HV9695 Z - 3,972,411.234 (meters) COMP HV9695 LAPLACE CORR- -2.82 (seconds) DEFLEC99 HV9695 ELLIP HEIGHT- 36.65 (meters) (05/17/02) GPS OBS HV9695 GEOID HEIGHT- -32.20 (meters) GEOID03 HV9695 DYNAMIC HT - 68.737 (meters) 225.51 (feet) COMP HV9695 MODELED GRAV- 980,074.7 (mgal) NAVD 88 HV9695 HV9695 HORZ ORDER - SECOND HV9695 VERT ORDER - THIRD HV9695 ELLP ORDER - FOURTH CLASS II HV9695 HV9695.The horizontal coordinates were established by GPS observations HV9695.and adjusted by the National Geodetic Survey in November 1994. HV9695 HV9695.The orthometric height was determined by differential leveling HV9695.and adjusted by the National Geodetic Survey in September 2004. HV9695 HV9695.The X, Y, and Z were computed from the position and the ellipsoidal ht. HV9695 HV9695.The Laplace correction was computed from DEFLEC99 derived deflections. HV9695 HV9695.The ellipsoidal height was determined by GPS observations HV9695.and is referenced to NAD 83. HV9695 HV9695.The geoid height was determined by GEOID03. HV9695 HV9695.The dynamic height is computed by dividing the NAVD 88 HV9695.geopotential number by the normal gravity value computed on the HV9695.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV9695.degrees latitude (g = 980.6199 gals.). HV9695 HV9695.The modeled gravity was interpolated from observed gravity values. HV9695 HV9695; North East Units Scale Factor Converg. HV9695;SPC VA N - 2,123,352.340 3,623,239.246 MT 0.99995189 +0 53 06.4 HV9695;SPC MD - 122,408.821 392,890.062 MT 0.99995156 -0 03 04.9 HV9695;SPC MD - 401,602.94 1,289,006.81 sFT 0.99995156 -0 03 04.9 HV9695;UTM 18 - 4,293,242.977 319,139.592 MT 1.00000281 -1 18 14.3 HV9695 HV9695! - Elev Factor x Scale Factor = Combined Factor HV9695!SPC VA N - 0.99999425 x 0.99995189 = 0.99994614 HV9695!SPC MD - 0.99999425 x 0.99995156 = 0.99994581 HV9695!UTM 18 - 0.99999425 x 1.00000281 = 0.99999706 HV9695 HV9695: Primary Azimuth Mark Grid Az HV9695:SPC VA N - GPS 79 203 35 34.9 HV9695:SPC MD - GPS 79 204 31 46.2 HV9695:UTM 18 - GPS 79 205 46 55.6 HV9695 HV9695|---------------------------------------------------------------------| HV9695| PID Reference Object Distance Geod. Az | HV9695| dddmmss.s | HV9695| HV9688 GPS 79 477.020 METERS 2042841.3 | HV9695|---------------------------------------------------------------------| HV9695 HV9695 SUPERSEDED SURVEY CONTROL HV9695 HV9695 ELLIP H (11/14/94) 36.64 (m) GP( ) 4 2 HV9695 NAD 83(1993)- 38 46 09.76740(N) 077 04 54.53644(W) AD( ) 2 HV9695 ELLIP H (09/27/93) 36.03 (m) GP( ) 4 1 HV9695 NGVD 29 (09/27/93) 69.03 (m) 226.5 (f) LEVELING 3 HV9695 HV9695.Superseded values are not recommended for survey control. HV9695.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV9695.See file dsdata.txt to determine how the superseded data were derived. HV9695 HV9695_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1914093243(NAD 83) HV9695_MARKER: DD = SURVEY DISK HV9695_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT HV9695_SP_SET: CONCRETE POST HV9695_STAMPING: MEMORIAL NO. 1 1986 HV9695_MARK LOGO: VA-059 HV9695_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET HV9695_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO HV9695+STABILITY: SURFACE MOTION HV9695_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR HV9695+SATELLITE: SATELLITE OBSERVATIONS - January 15, 1990 HV9695 HV9695 HISTORY - Date Condition Report By HV9695 HISTORY - 1986 MONUMENTED VA-059 HV9695 HISTORY - 19900115 GOOD RDA HV9695 HISTORY - 20050528 GOOD GEOCAC HV9695 HV9695 STATION DESCRIPTION HV9695 HV9695'DESCRIBED BY FAIRFAX COUNTY VIRGINIA 1986 HV9695'THE STATION IS LOCATED IN SOUTHEASTERN FAIRFAX COUNTY, VIRGINIA ABOUT HV9695'2.5 MILES (4.0 KM) SOUTH OF THE VILLAGE OF ALEXANDRIA. TO REACH HV9695'THE STATION FROM THE INTERSECTION OF INTERSTATE 95 AND U.S. ROUTE 1 HV9695'PROCEED SOUTHWEST ALONG U.S. ROUTE 1 2.7 MILES (4.3 KM) TO JUST HV9695'BEFORE SPRING DRIVE AND THE STATION ON THE LEFT IN THE GRASS MEDIAN. HV9695'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF ROUTE 1 AND HV9695'HUNTINGTON AVENUE PROCEED SOUTH ON ROUTE 1 FOR 1.9 MILES (3.1 KM) TO HV9695'THE MONUMENT ON THE LEFT. THE AZIMUTH MARK IS A STANDARD FAIRFAX HV9695'COUNTY DEPARTMENT OF PUBLIC WORKS DISK SET IN A CONCRETE MONUMENT HV9695'BETWEEN THE CURB AND SIDEWALK STAMPED MEMORIAL NO. 1 1986. THE MARK HV9695'IS 52.48 FEET (16.00 M) WEST OF THE CORNER OF BRICK BUILDING NUMBER HV9695'6821 AND 36.73 FEET (11.20 M) NORTH OF P.K. NAIL IN POLE NUMBER G44. HV9695'THE AZIMUTH MARK IS 477.028 METERS (1565.049 FT) FROM THE STATION. HV9695 HV9695 STATION RECOVERY (1990) HV9695 HV9695'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1990 HV9695'THE STATION IS LOCATED IN SOUTHEASTERN FAIRFAX COUNTY, VIRGINIA ABOUT HV9695'2.5 MILES SOUTH OF THE VILLAGE OF ALEXANDRIA. TO REACH THE STATION HV9695'FROM THE INTERSECTION OF INTERSTATE 95 AND U.S. ROUTE 1 PROCEED HV9695'SOUTHWEST ALONG U.S. ROUTE 1 2.7 MILES TO JUST BEFORE SPRING DRIVE HV9695'AND THE STATION ON THE LEFT IN THE GRASS MEDIAN. TO REACH THE HV9695'AZIMUTH MARK FROM THE INTERSECTION OF ROUTE 1 AND HUNTINGTON AVENUE HV9695'PROCEED SOUTH ON ROUTE 1 FOR 1.9 MILES TO THE MONUMENT ON THE LEFT, HV9695'IN TOP OF A CONCRETE MONUMENT FLUSH WITH THE GROUND, BETWEEN THE HV9695'CURB AND SIDEWALK, 52.48 FEET WEST OF THE HV9695'CORNER OF BRICK BUILDING NUMBER 6821 AND 36.73 FEET NORTH OF P.K. HV9695'NAIL IN POLE NUMBER G44, 477.028 METERS FROM THE STATION. HV9695 HV9695 STATION RECOVERY (2005) HV9695 HV9695'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV9695'FOUND AS DESCRIBED, IN FRONT OF A FORMER TWO-STORY BRICK HOUSE AT 6821 HV9695'RICHMOND HIGHWAY, IN THE GRASSY STRIP BETWEEN CURB AND SIDEWALK. THE HV9695'FORMER HOUSE IS NOW A PROPERTY MANAGEMENT OFFICE IN THE SOUTHEAST HV9695'CORNER OF THE INTERSECTION OF ROUTE 1 (RICHMOND HWY) AND MEMORIAL HV9695'STREET. HV9695' HV9695'THE STATION IS ABOUT 55 FEET SOUTH OF POLE C1012 AO71. HV9695' HV9695'POLE G44, MENTIONED IN THE PREVIOUS RECOVERY REPORTS, IS NOW NUMBERED HV9695'C1012 AN78 1 National Geodetic Survey, Retrieval Date = JULY 1, 2005 HV8574 *********************************************************************** HV8574 DESIGNATION - NEAL AZ MK HV8574 PID - HV8574 HV8574 STATE/COUNTY- VA/FAIRFAX HV8574 USGS QUAD - MOUNT VERNON (1983) HV8574 HV8574 *CURRENT SURVEY CONTROL HV8574 ___________________________________________________________________ HV8574* NAD 83(1993)- 38 43 56.65345(N) 077 03 01.12891(W) ADJUSTED HV8574* NAVD 88 - 14.9 (meters) 49. (feet) VERTCON HV8574 ___________________________________________________________________ HV8574 LAPLACE CORR- -2.59 (seconds) DEFLEC99 HV8574 GEOID HEIGHT- -32.35 (meters) GEOID03 HV8574 HV8574 HORZ ORDER - SECOND HV8574 HV8574.The horizontal coordinates were established by classical geodetic methods HV8574.and adjusted by the National Geodetic Survey in November 1994. HV8574 HV8574.The NAVD 88 height was computed by applying the VERTCON shift value to HV8574.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) HV8574 HV8574.The Laplace correction was computed from DEFLEC99 derived deflections. HV8574 HV8574.The geoid height was determined by GEOID03. HV8574 HV8574; North East Units Scale Factor Converg. HV8574;SPC VA N - 2,119,291.005 3,626,041.280 MT 0.99995039 +0 54 17.2 HV8574;SPC MD - 118,302.231 395,625.352 MT 0.99995296 -0 01 53.7 HV8574;SPC MD - 388,129.90 1,297,980.84 sFT 0.99995296 -0 01 53.7 HV8574;UTM 18 - 4,289,077.411 321,784.611 MT 0.99999112 -1 16 59.5 HV8574 HV8574! - Elev Factor x Scale Factor = Combined Factor HV8574!SPC VA N - 1.00000274 x 0.99995039 = 0.99995313 HV8574!SPC MD - 1.00000274 x 0.99995296 = 0.99995570 HV8574!UTM 18 - 1.00000274 x 0.99999112 = 0.99999386 HV8574 HV8574 SUPERSEDED SURVEY CONTROL HV8574 HV8574 NAD 83(1993)- 38 43 56.64941(N) 077 03 01.13074(W) AD( ) 2 HV8574 NAD 83(1986)- 38 43 56.64984(N) 077 03 01.14256(W) AD( ) 2 HV8574 NGVD 29 (01/12/90) 15.2 (m) 50. (f) VERT ANG HV8574 HV8574.Superseded values are not recommended for survey control. HV8574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV8574.See file dsdata.txt to determine how the superseded data were derived. HV8574 HV8574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2178589077(NAD 83) HV8574_MARKER: X = CHISELED CROSS HV8574_SETTING: 0 = UNSPECIFIED SETTING HV8574_MAGNETIC: N = NO MAGNETIC MATERIAL HV8574_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY HV8574 HV8574 HISTORY - Date Condition Report By HV8574 HISTORY - UNK MONUMENTED HV8574 HISTORY - 1976 GOOD VA-059 HV8574 HISTORY - 20050528 GOOD GEOCAC HV8574 HV8574 STATION DESCRIPTION HV8574 HV8574'DESCRIBED BY FAIRFAX COUNTY VIRGINIA 1976 (EYB) HV8574'THE AZIMUTH MARK WAS RECOVERED IN GOOD CONDITION. SEE FAIRFAX COUNTY HV8574'TAX MAP 102-4. HV8574 HV8574 STATION RECOVERY (2005) HV8574 HV8574'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV8574'SEE DATASHEET FOR STATION NEAL (HV8573) FOR PREVIOUS DESCRIPTION. HV8574' HV8574'AZIMUTH MARK FOUND IN GOOD CONDITION IN SOUTHEAST QUADRANT OF HV8574'INTERSECTION OF COLLINGWOOD ROAD AND CEDARDALE DRIVE. MARK IS IN FRONT HV8574'OF HOUSE NUMBER 1011 IN CURVED SECTION OF CURB. HV8574' HV8574'MARK IS ABOUT 6.7 FEET WEST-NORTHWEST OF METAL STREET SIGN POLE, AND HV8574'ABOUT 20.8 FEET WEST OF POWER POLE 8235X SC62, AND ABOUT 27.9 FEET HV8574'NORTHEAST OF A HYDRANT. HV8574' HV8574'THE HYDRANT IS ALONG CEDARDALE DRIVE. THE POLES ARE ALONG COLLINGWOOD HV8574'ROAD. 1 National Geodetic Survey, Retrieval Date = JULY 1, 2005 HV8588 *********************************************************************** HV8588 DESIGNATION - PEACH GROVE 3 AZ MK HV8588 PID - HV8588 HV8588 STATE/COUNTY- VA/FAIRFAX HV8588 USGS QUAD - FALLS CHURCH (1994) HV8588 HV8588 *CURRENT SURVEY CONTROL HV8588 ___________________________________________________________________ HV8588* NAD 83(1993)- 38 55 00.49303(N) 077 14 08.59958(W) ADJUSTED HV8588* NAVD 88 - 142.3 (meters) 467. (feet) VERTCON HV8588 ___________________________________________________________________ HV8588 LAPLACE CORR- -1.16 (seconds) DEFLEC99 HV8588 GEOID HEIGHT- -31.74 (meters) GEOID03 HV8588 HV8588 HORZ ORDER - SECOND HV8588 HV8588.The horizontal coordinates were established by classical geodetic methods HV8588.and adjusted by the National Geodetic Survey in November 1994. HV8588 HV8588.The NAVD 88 height was computed by applying the VERTCON shift value to HV8588.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) HV8588 HV8588.The Laplace correction was computed from DEFLEC99 derived deflections. HV8588 HV8588.The geoid height was determined by GEOID03. HV8588 HV8588; North East Units Scale Factor Converg. HV8588;SPC VA N - 2,139,520.494 3,609,640.355 MT 0.99996199 +0 47 20.6 HV8588;SPC MD - 138,797.034 379,557.393 MT 0.99995010 -0 08 52.6 HV8588;SPC MD - 455,369.94 1,245,264.55 sFT 0.99995010 -0 08 52.6 HV8588;UTM 18 - 4,309,920.581 306,167.914 MT 1.00006266 -1 24 17.6 HV8588 HV8588! - Elev Factor x Scale Factor = Combined Factor HV8588!SPC VA N - 0.99998265 x 0.99996199 = 0.99994464 HV8588!SPC MD - 0.99998265 x 0.99995010 = 0.99993275 HV8588!UTM 18 - 0.99998265 x 1.00006266 = 1.00004531 HV8588 HV8588 SUPERSEDED SURVEY CONTROL HV8588 HV8588 NAD 83(1993)- 38 55 00.49224(N) 077 14 08.60212(W) AD( ) 2 HV8588 NAD 83(1986)- 38 55 00.49212(N) 077 14 08.61179(W) AD( ) 2 HV8588 NGVD 29 (01/12/90) 142.6 (m) 468. (f) VERT ANG HV8588 HV8588.Superseded values are not recommended for survey control. HV8588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV8588.See file dsdata.txt to determine how the superseded data were derived. HV8588 HV8588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0616809921(NAD 83) HV8588_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION HV8588_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE HV8588_SP_SET: SET IN TOP OF IRREGULAR CONCRETE HV8588_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY HV8588 HV8588 HISTORY - Date Condition Report By HV8588 HISTORY - 1969 MONUMENTED CGS HV8588 HISTORY - 1975 GOOD VA-059 HV8588 HV8588 STATION DESCRIPTION HV8588 HV8588'DESCRIBED BY FAIRFAX COUNTY VIRGINIA 1975 (EYB) HV8588'THE AZIMUTH MARK WAS RECOVERED IN GOOD CONDITION. SEE FAIRFAX COUNTY HV8588'TAX MAP 39-1, REVISED TO 1-1-76. 1 National Geodetic Survey, Retrieval Date = JULY 1, 2005 HV8682 *********************************************************************** HV8682 DESIGNATION - VERNON HV8682 PID - HV8682 HV8682 STATE/COUNTY- VA/FAIRFAX HV8682 USGS QUAD - MOUNT VERNON (1983) HV8682 HV8682 *CURRENT SURVEY CONTROL HV8682 ___________________________________________________________________ HV8682* NAD 83(1993)- 38 44 04.47271(N) 077 03 38.30963(W) ADJUSTED HV8682* NAVD 88 - 9.0 (meters) 30. (feet) VERTCON HV8682 ___________________________________________________________________ HV8682 LAPLACE CORR- -2.50 (seconds) DEFLEC99 HV8682 GEOID HEIGHT- -32.33 (meters) GEOID03 HV8682 HV8682 HORZ ORDER - SECOND HV8682 HV8682.The horizontal coordinates were established by classical geodetic methods HV8682.and adjusted by the National Geodetic Survey in November 1994. HV8682 HV8682.The NAVD 88 height was computed by applying the VERTCON shift value to HV8682.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) HV8682 HV8682.The Laplace correction was computed from DEFLEC99 derived deflections. HV8682 HV8682.The geoid height was determined by GEOID03. HV8682 HV8682; North East Units Scale Factor Converg. HV8682;SPC VA N - 2,119,517.951 3,625,139.620 MT 0.99995047 +0 53 54.0 HV8682;SPC MD - 118,543.882 394,727.518 MT 0.99995287 -0 02 17.0 HV8682;SPC MD - 388,922.72 1,295,035.20 sFT 0.99995287 -0 02 17.0 HV8682;UTM 18 - 4,289,338.626 320,892.234 MT 0.99999505 -1 17 23.0 HV8682 HV8682! - Elev Factor x Scale Factor = Combined Factor HV8682!SPC VA N - 1.00000367 x 0.99995047 = 0.99995414 HV8682!SPC MD - 1.00000367 x 0.99995287 = 0.99995654 HV8682!UTM 18 - 1.00000367 x 0.99999505 = 0.99999872 HV8682 HV8682 SUPERSEDED SURVEY CONTROL HV8682 HV8682 NAD 83(1993)- 38 44 04.46919(N) 077 03 38.31156(W) AD( ) 2 HV8682 NAD 83(1986)- 38 44 04.46985(N) 077 03 38.32332(W) AD( ) 2 HV8682 NGVD 29 (01/12/90) 9.2 (m) 30. (f) VERT ANG HV8682 HV8682.Superseded values are not recommended for survey control. HV8682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV8682.See file dsdata.txt to determine how the superseded data were derived. HV8682 HV8682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2089289339(NAD 83) HV8682_MARKER: S = SPIKE HV8682_SETTING: 0 = UNSPECIFIED SETTING HV8682_MAGNETIC: O = OTHER; SEE DESCRIPTION HV8682_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY HV8682 HV8682 HISTORY - Date Condition Report By HV8682 HISTORY - 1975 MONUMENTED VA-059 HV8682 HISTORY - 20050528 MARK NOT FOUND GEOCAC HV8682 HV8682 STATION DESCRIPTION HV8682 HV8682'DESCRIBED BY FAIRFAX COUNTY VIRGINIA 1975 (EYB) HV8682'THE STATION IS LOCATED ABOUT 7.3 MILES SOUTHEAST OF SPRINGFIELD, 5.8 HV8682'MILES SOUTH OF ALEXANDRIA, 2.1 MILES NORTHEAST OF MT VERNON, IN THE HV8682'ASPHALT ENTRANCE TO THE MT VERNON PRE-SCHOOL AT 1703 COLLINGWOOD HV8682'ROAD. SEE FAIRFAX COUNTY TAX MAP 102-4, REVISED TO 1-1-76. HV8682' HV8682'TO REACH THE STATION FROM THE JUNCTION OF I-495 AND THE GEORGE HV8682'WASHINGTON MEMORIAL PARKWAY, GO SOUTH ON THE PARKWAY FOR 4.6 MILES TO HV8682'THE JUNCTION WITH ROUTE 628, COLLINGWOOD ROAD. TURN RIGHT AND GO WEST HV8682'ON ROUTE 628 FOR 0.75 MILES TO THE STATION ON THE LEFT. HV8682' HV8682'THE STATION IS A PUNCH MARK ON THE TOP OF AN IRON RAILROAD SPIKE SET HV8682'IN THE ASPHALT DRIVE OF 1703 WEST COLLINGWOOD ROAD. LOCATED 15 FEET S HV8682'FROM THE CENTERLINE OF COLLINGWOOD ROAD. HV8682' HV8682'REFERENCE MARK NO. 01 IS THE TOP OF THE HINGE BOLT ON THE WATER HV8682'METER THE LAWN IN FRONT OF THE PRE-SCHOOL LOCATED 24 FEET S FROM THE HV8682'CENTERLINE OF COLLINGWOOD ROAD. HV8682' HV8682'REFERENCE MARK NO. 02 IS A NAIL AND CAP IN THE SIDE OF UTILITY POLE HV8682'HG-111. LOCATED 18 FEET S FROM THE CENTERLINE OF COLLINGWOOD ROAD AND HV8682'50 FEET E FROM RM 1. HV8682 HV8682 STATION RECOVERY (2005) HV8682 HV8682'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV8682'STATION NOT FOUND AND APPEARS TO BE LOST. HV8682' HV8682'NO PRE-SCHOOL OR ANY OTHER STRUCTURE FOUND WITH ADDRESS 1703 HV8682'COLLINGWOOD. AT THE APPARENT LOCATION IS A RESIDENTIAL SUBDIVISION HV8682'THAT APPEARS TO HAVE BEEN BUILT AFTER THE 1975 MONUMENTATION DATE.