1 National Geodetic Survey, Retrieval Date = MARCH 3, 2005 HV4835 *********************************************************************** HV4835 DESIGNATION - BURLING PB PP 1930 HV4835 PID - HV4835 HV4835 STATE/COUNTY- VA/FAIRFAX HV4835 USGS QUAD - FALLS CHURCH (1994) HV4835 HV4835 *CURRENT SURVEY CONTROL HV4835 ___________________________________________________________________ HV4835* NAD 83(1993)- 38 57 31.90371(N) 077 11 47.65000(W) ADJUSTED HV4835* NAVD 88 - 100. (meters) 328. (feet) SCALED HV4835 ___________________________________________________________________ HV4835 LAPLACE CORR- -1.67 (seconds) DEFLEC99 HV4835 GEOID HEIGHT- -31.74 (meters) GEOID03 HV4835 HV4835 HORZ ORDER - SECOND HV4835 HV4835.The horizontal coordinates were established by classical geodetic methods HV4835.and adjusted by the National Geodetic Survey in November 1994. HV4835 HV4835.The orthometric height was scaled from a topographic map. HV4835 HV4835.The Laplace correction was computed from DEFLEC99 derived deflections. HV4835 HV4835.The geoid height was determined by GEOID03. HV4835 HV4835; North East Units Scale Factor Converg. HV4835;SPC VA N - 2,144,236.437 3,612,969.229 MT 0.99996609 +0 48 48.6 HV4835;SPC MD - 143,457.849 382,962.890 MT 0.99995090 -0 07 24.1 HV4835;SPC MD - 470,661.29 1,256,437.41 sFT 0.99995090 -0 07 24.1 HV4835;UTM 18 - 4,314,506.010 309,675.245 MT 1.00004606 -1 22 53.5 HV4835 HV4835! - Elev Factor x Scale Factor = Combined Factor HV4835!SPC VA N - 0.99998933 x 0.99996609 = 0.99995542 HV4835!SPC MD - 0.99998933 x 0.99995090 = 0.99994023 HV4835!UTM 18 - 0.99998933 x 1.00004606 = 1.00003539 HV4835 HV4835: Primary Azimuth Mark Grid Az HV4835:SPC VA N - BOUCHER 077 41 31.5 HV4835:SPC MD - BOUCHER 078 37 44.2 HV4835:UTM 18 - BOUCHER 079 53 13.6 HV4835 HV4835|---------------------------------------------------------------------| HV4835| PID Reference Object Distance Geod. Az | HV4835| dddmmss.s | HV4835| HV2292 BOUCHER APPROX. 1.4 KM 0783020.1 | HV4835|---------------------------------------------------------------------| HV4835 HV4835 SUPERSEDED SURVEY CONTROL HV4835 HV4835 NAD 83(1993)- 38 57 31.90300(N) 077 11 47.65164(W) AD( ) 2 HV4835 NAD 83(1986)- 38 57 31.90309(N) 077 11 47.66109(W) AD( ) 2 HV4835 NAD 27 - 38 57 31.50574(N) 077 11 48.72620(W) AD( ) 2 HV4835 HV4835.Superseded values are not recommended for survey control. HV4835.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV4835.See file dsdata.txt to determine how the superseded data were derived. HV4835 HV4835_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0967514506(NAD 83) HV4835_MARKER: Z = SEE DESCRIPTION HV4835_SETTING: 0 = UNSPECIFIED SETTING HV4835_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY HV4835 HV4835 HISTORY - Date Condition Report By HV4835 HISTORY - 1930 MONUMENTED PBPP HV4835 HISTORY - 1930 GOOD PBPP HV4835 HISTORY - 1931 GOOD PBPP HV4835 HISTORY - 1956 GOOD CGS HV4835 HISTORY - 1958 GOOD CGS HV4835 HISTORY - 20050129 POOR GEOCAC HV4835 HV4835 STATION DESCRIPTION HV4835 HV4835'DESCRIBED BY PUB BLDGS AND PARKS 1930 HV4835'STATION IS LOCATED ON A TIMBERED HILL ON THE ESTATE OF EDWARD HV4835'BURLING, ON THE RIVER SIDE OF THE LANGLEY TO GREAT FALLS ROAD, HV4835'VIRGINIA. THERE IS AN OLD LOGGING ROAD RUNNING FROM THE CLEARED HV4835'FIELD IN THE REAR OF THE HOME OF E.B. JONES ONTO THE HILL ON WHICH HV4835'THE STATION IS LOCATED. THE STATION IS JUST A LITTLE W OF N HV4835'FROM JONES HOUSE, WHICH IS A LARGE BRICK HOUSE ON THE RIVER SIDE HV4835'OF THE ROAD AT THE TOP OF A HILL JUST BEFORE REACHING THE TOLL HV4835'GATE. HV4835' HV4835'STATION IS A STANDARD U.S.P.B. AND P.P. TRIANGULATION MARK SET IN HV4835'CONCRETE IN A 5-INCH IRON PIPE. HV4835' HV4835'UNDERGROUND MARKER CONSISTS OF A SOFT DRINK BOTTLE WITH TOP HV4835'ABOUT 3 FEET 10 INCHES BELOW SURFACE OF GROUND. HV4835 HV4835 STATION RECOVERY (1930) HV4835 HV4835'RECOVERY NOTE BY PUB BLDGS AND PARKS 1930 HV4835'STATION LOCATED ON VIRGINIA SIDE OF POTOMAC RIVER, ON ESTATE HV4835'OF HENRY BURLING, ON WOODED RIDGE, ABOUT 360 FEET ALONG CENTER HV4835'LINE OF OLD LOGGING ROAD FROM WHERE ROAD ENTERS WOODS E AT HV4835'BASE OF 30-INCH POPLAR FROM WHICH THE LIMBS HAVE BEEN CUT OFF. HV4835' HV4835'STATION CONSISTS OF STANDARD P.B. AND P.P. BRASS DISK SET IN HV4835'6-INCH TERRA COTTA PIPE, SURROUNDED BY CONCRETE. NO UNDERGROUND HV4835'MARKER SET ON ACCOUNT OF ROOTS OF TREE AND A HOLE ABOUT 14 INCHES HV4835'DEEP WAS DUG. HV4835' HV4835'TWO AZIMUTH MARKERS, STANDARD BRASS DISKS IN TERRA COTTA PIPE HV4835'AND CAST IRON PIPE WERE SET ON JONES PROPERTY NEAR BASE OF CEDAR HV4835'TREE AND ABOUT 4 INCHES BELOW THE SURFACE. ON GRAYSONS PROPERTY HV4835'NEAR LINEHURST ROAD, ALONG FENCE LINE AND NEAR WHERE LOGGING HV4835'ROAD LEAVES LINEHURST ROAD. HV4835' HV4835'ENTRANCE TO STATION ALONG GREAT FALLS ROAD TO OLD LINEHURST HV4835'ROAD, THENCE ALONG LINEHURST ROAD ABOUT 750 FEET TO OLD LOGGING HV4835'ROAD, THENCE ALONG OLD LOGGING ROAD INTO WOODS BEYOND JONES HV4835'PROPERTY. HV4835 HV4835 STATION RECOVERY (1931) HV4835 HV4835'RECOVERY NOTE BY PUB BLDGS AND PARKS 1931 HV4835'ON ACCOUNT OF THE ROOTS OF A LARGE POPLAR TREE WHICH WAS ONLY HV4835'0.7 FOOT AWAY NO UNDERGROUND MARKER WAS PLACED AT THIS STATION, HV4835'BUT TWO REFERENCE STATIONS WERE ESTABLISHED BOTH WITH UNDERGROUND HV4835'MARKERS AND SURFACE MARKERS STAMPED REFERENCE STATIONS NOS. 1 AND HV4835'2. HV4835' HV4835'REFERENCE STATION NO. 1 IS N 49 DEG 03 MIN W 19.63 FEET FROM STATION HV4835'BURLING AND CONSISTS OF A STANDARD DISK SET IN CONCRETE IN AN HV4835'8-INCH TERRA COTTA PIPE WITH A SOFT DRINK BOTTLE FOR THE SUBSURFACE HV4835'MARK. HV4835' HV4835'REFERENCE STATION NO. 2 IS S 46 DEG 38 MIN W 22.75 FEET FROM HV4835'STATION BURLING AND CONSISTS OF A BRONZE DISK SET IN A GRANITE HV4835'STONE WITH A BRASS PLUG SET IN CONCRETE IN A PINE MILK BOTTLE. HV4835 HV4835 STATION RECOVERY (1956) HV4835 HV4835'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (MLC) HV4835'THE STATION AND TWO REFERENCE STATIONS RECOVERED. THE STATION HV4835'MARK, SET 0.7 FT. AWAY FROM THE LARGE POPLAR TREE MENTIONED HV4835'IN THE 1931 RECOVERY NOTE, APPEARS TO BE DISTURBED BY GROWTH HV4835'OF THE TREE. THE TWO REFERENCE STATIONS ARE IN GOOD CONDITION. HV4835'NO OBSERVATIONS WERE MADE AT THE STATION. HV4835' HV4835'TO REACH THE STATION FROM THE JUNCTION OF BALLS HILL ROAD AND HV4835'STATE HIGHWAY 193, GO W ON STATE HIGHWAY 193 FOR 0.15 MI. TO HV4835'A LOCKED GATE ON THE RIGHT AT ENTRANCE TO THE BURLING PROPERTY. HV4835'FROM THE GATE FOLLOW THE ROAD N FOR 0.15 MI. TO THE TOP OF A HV4835'WOODED HILL AND STATION ON THE RIGHT ABOUT 150 FT. FROM ROAD. HV4835 HV4835 STATION RECOVERY (1958) HV4835 HV4835'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE) HV4835'STATION MARK APPEARS TO HAVE BEEN MOVED BY THE GROWTH OF A LARGE HV4835'POPLAR TREE. REFERENCE MARKS 1 AND 2 WERE RECOVERED AS DESCRIBED HV4835'AND FOUND IN GOOD CONDITION. THE 1930 MEASUREMENT OF THE ANGLE HV4835'BETWEEN THE TRUE STATION AND REFERENCE MARK 2 (AT REFERENCE HV4835'MARK 1) WAS 52 DEG 30 MIN 20 SEC. THIS ANGLE COULD NOT BE HV4835'CHECKED BECAUSE OF THE MOVEMENT OF THE STATION MARK IN AN HV4835'APPARENT S DIRECTION, BUT WAS APPROXIMATELY CORRECT AS OF 1958. HV4835' HV4835'STATION MARK WAS SOLID AND WAS USED AS A REFERENCE MARK FOR HV4835'BURLING RM 1. HV4835' HV4835'NO OBSERVATIONS WERE MADE AT THIS STATION. HV4835' HV4835'TO REACH THE STATION FROM THE POST OFFICE IN MC LEAN, GO W-NW HV4835'ON OLD DOMINION DRIVE FOR 1.05 MI. TO ANGLING CROSSROADS. HV4835'TURN RIGHT AND GO N ON BALLS HILL ROAD FOR 0.95 MI. TO A HV4835'T-JUNCTION. TURN LEFT AND GO W ON LEESBURG ROAD FOR 0.2 MI. TO A HV4835'POLE GATE ON THE RIGHT (N) SIDE OF THE ROAD. TURN RIGHT AND HV4835'GO N (THROUGH A GATE) AND CONTINUE N ON A DIRT ROAD FOR 0.2 MI. HV4835'TO THE TOP OF A RIDGE. STATION IS ABOUT 150 FT. E OF THE HV4835'ROAD IN A SMALL CLEARING. HV4835 HV4835 STATION RECOVERY (2005) HV4835 HV4835'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV4835'AS NOTED IN PREVIOUS RECOVERY REPORTS, MARK APPEARS TO HAVE BEEN HV4835'DISPLACED BY GROWTH OF TREE. DISTANCE AND ANGLES TO REFERENCE MARKS HV4835'NOT MEASURED. HV4835' HV4835'TO REACH FROM INTERSECTION OF BELTWAY AND ROUTE 193, GO WEST ON 193 HV4835'ABOUT 0.25 MILES TO PARK ENTRANCE AND PARKING LOT. PROCEED THROUGH HV4835'METAL GATE ALONG WIDE TRAIL OR ROAD IN A GENERALLY NORTHWARD DIRECTION HV4835'PAST A SECONDARY TRAIL ENTERING AT A SHARP ANGLE FROM THE LEFT. HV4835' HV4835'CONTINUE ALONG THE MAIN TRAIL TO A POINT ABOUT MIDWAY BETWEEN THE SIDE HV4835'TRAIL AND WHERE THE MAIN TRAIL CURVES TO THE LEFT. AT THAT MIDWAY HV4835'POINT, WHICH IS ABOUT 0.19 MILES FROM THE PARKING LOT, TURN RIGHT AND HV4835'PROCEED CROSS-COUNTRY ABOUT 130-150 FEET TO THE STATION. 1 National Geodetic Survey, Retrieval Date = MARCH 3, 2005 HV2288 *********************************************************************** HV2288 DESIGNATION - BURLING RM 1 PBPP HV2288 PID - HV2288 HV2288 STATE/COUNTY- VA/FAIRFAX HV2288 USGS QUAD - FALLS CHURCH (1994) HV2288 HV2288 *CURRENT SURVEY CONTROL HV2288 ___________________________________________________________________ HV2288* NAD 83(1993)- 38 57 32.03099(N) 077 11 47.83988(W) ADJUSTED HV2288* NAVD 88 - 100.220 (meters) 328.81 (feet) ADJUSTED HV2288 ___________________________________________________________________ HV2288 LAPLACE CORR- -1.67 (seconds) DEFLEC99 HV2288 GEOID HEIGHT- -31.74 (meters) GEOID03 HV2288 DYNAMIC HT - 100.167 (meters) 328.63 (feet) COMP HV2288 MODELED GRAV- 980,092.9 (mgal) NAVD 88 HV2288 HV2288 HORZ ORDER - SECOND HV2288 VERT ORDER - SECOND CLASS 0 HV2288 HV2288.The horizontal coordinates were established by classical geodetic methods HV2288.and adjusted by the National Geodetic Survey in November 1994. HV2288 HV2288.The orthometric height was determined by differential leveling HV2288.and adjusted by the National Geodetic Survey in June 1991. HV2288 HV2288.The Laplace correction was computed from DEFLEC99 derived deflections. HV2288 HV2288.The geoid height was determined by GEOID03. HV2288 HV2288.The dynamic height is computed by dividing the NAVD 88 HV2288.geopotential number by the normal gravity value computed on the HV2288.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV2288.degrees latitude (g = 980.6199 gals.). HV2288 HV2288.The modeled gravity was interpolated from observed gravity values. HV2288 HV2288; North East Units Scale Factor Converg. HV2288;SPC VA N - 2,144,240.296 3,612,964.602 MT 0.99996610 +0 48 48.5 HV2288;SPC MD - 143,461.784 382,958.327 MT 0.99995090 -0 07 24.3 HV2288;SPC MD - 470,674.20 1,256,422.44 sFT 0.99995090 -0 07 24.3 HV2288;UTM 18 - 4,314,510.045 309,670.769 MT 1.00004608 -1 22 53.6 HV2288 HV2288! - Elev Factor x Scale Factor = Combined Factor HV2288!SPC VA N - 0.99998926 x 0.99996610 = 0.99995536 HV2288!SPC MD - 0.99998926 x 0.99995090 = 0.99994016 HV2288!UTM 18 - 0.99998926 x 1.00004608 = 1.00003534 HV2288 HV2288: Primary Azimuth Mark Grid Az HV2288:SPC VA N - PAYNTER 348 29 26.5 HV2288:SPC MD - PAYNTER 349 25 39.3 HV2288:UTM 18 - PAYNTER 350 41 08.6 HV2288 HV2288|---------------------------------------------------------------------| HV2288| PID Reference Object Distance Geod. Az | HV2288| dddmmss.s | HV2288| HV4866 PAYNTER APPROX. 2.7 KM 3491815.0 | HV2288|---------------------------------------------------------------------| HV2288 HV2288 SUPERSEDED SURVEY CONTROL HV2288 HV2288 NAD 83(1993)- 38 57 32.03028(N) 077 11 47.84164(W) AD( ) 2 HV2288 NAD 83(1986)- 38 57 32.03032(N) 077 11 47.85113(W) AD( ) 2 HV2288 NAD 27 - 38 57 31.63264(N) 077 11 48.91420(W) AD( ) 2 HV2288 NGVD 29 (??/??/??) 100.443 (m) 329.54 (f) ADJUSTED 2 0 HV2288 HV2288.Superseded values are not recommended for survey control. HV2288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV2288.See file dsdata.txt to determine how the superseded data were derived. HV2288 HV2288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0967114510(NAD 83) HV2288_MARKER: DR = REFERENCE MARK DISK HV2288_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT HV2288_STAMPING: REFERENCE 1 HV2288_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO HV2288+STABILITY: SURFACE MOTION HV2288_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR HV2288+SATELLITE: SATELLITE OBSERVATIONS - January 29, 2005 HV2288 HV2288 HISTORY - Date Condition Report By HV2288 HISTORY - 1958 MONUMENTED CGS HV2288 HISTORY - 1960 GOOD CGS HV2288 HISTORY - 20050129 GOOD GEOCAC HV2288 HV2288 STATION DESCRIPTION HV2288 HV2288'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE) HV2288'STATION IS LOCATED ON A WOODED HILL ABOUT 2 MILES NORTHWEST OF HV2288'MC LEAN, ABOUT 1/2 MILE SOUTH OF POTOMAC RIVER AND ABOUT 3.0 HV2288'MILES NORTHEAST OF TYSONS CORNER. STATION IS 18 FEET NORTHWEST HV2288'OF A 40 INCH POPLAR TREE. THE MARK IS A PUBLIC BUILDING AND HV2288'PUBLIC PARK DISK SET IN A 10 INCH TERRA COTTA PIPE, FLUSH WITH HV2288'THE GROUND AND THE DISK IS STAMPED REFERENCE 1. HV2288' HV2288'REFERENCE MARK NO. 2 IS 23 FEET WEST-SOUTHWEST OF A 40 INCH HV2288'POPLAR TREE AND 23-1/2 FEET EAST-NORTHEAST OF A 30 INCH TREE. HV2288'THE MARK IS A PUBLIC BUILDING AND PUBLIC PARK DISK SET IN A HV2288'12 X 12 INCH STONE MONUMENT, FLUSH WITH THE GROUND AND THE DISK HV2288'IS NOT STAMPED. HV2288' HV2288'BURLING 1930 IS 1 FOOT SOUTH OF A 40 INCH POPLAR TREE. THE MARK HV2288'IS A PUBLIC BUILDING AND PUBLIC PARK DISK SET IN A 10 INCH HV2288'TERRA COTTA PIPE, FLUSH WITH THE GROUND AND THE DISK IS STAMPED HV2288'BURLING 1930. HV2288' HV2288'DIRECTION TO BURLING PB AND PP 1930 AND REFERENCE MARK NO. 2 HV2288'WAS NOT MEASURED DUE TO LOCATION OF MARKS. HV2288' HV2288'TO REACH FROM THE POST OFFICE IN MC LEAN, GO WEST-NORTHWEST HV2288'ON OLD DOMINION DRIVE FOR 1.05 MILES TO ANGLING CROSSROADS. HV2288'TURN RIGHT AND GO NORTH ON BALLS HILL ROAD FOR 0.95 MILE TO HV2288'T JUNCTION. TURN LEFT AND GO WESTERLY ON LEESBURG ROAD FOR HV2288'0.2 MILE TO POLE GATE AT SIDE ROAD RIGHT. (KEY FOR GATE MUST BE HV2288'OBTAINED FROM L.H. BOSTON). TURN RIGHT AND GO NORTH THROUGH HV2288'GATE AND CONTINUE ON DIRT ROAD FOR 0.2 MILE TO DIM TRACK ROAD HV2288'RIGHT AT TOP OF HILL. TURN RIGHT AND GO EASTERLY FOR ABOUT 150 HV2288'FEET TO STATION AS DESCRIBED. HV2288' HV2288'TO REACH L.H. BOSTONS HOUSE FROM LOCKED GATE, GO WEST ON LEESBURG HV2288'ROAD FOR 0.2 MILE DIRT ROAD LEFT WHICH IS WESTERN ONE OF TWO HV2288'DRIVEWAYS. TURN LEFT AND GO SOUTH AND WEST ON DIRT ROAD FOR HV2288'0.1 MILE TO THE BOSTON RESIDENCE. HV2288' HV2288'HEIGHT OF LIGHT ABOVE STATION MARK 37 METERS. HV2288 HV2288 STATION RECOVERY (1960) HV2288 HV2288'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 HV2288'2.4 MI NW FROM LANGLEY. HV2288'ABOUT 2.15 MILES NORTHWEST ALONG STATE HIGHWAY 193 FROM THE HV2288'JUNCTION OF STATE HIGHWAY 123 AT LANGLEY, THENCE ABOUT 0.25 MILE HV2288'NORTH ALONG A PRIVATE DIRT ROAD, ABOUT 50 YARDS EAST OF DIRT HV2288'ROAD, 18 FEET NORTHWEST OF A TWIN TRUNK 40-INCH POPLAR TREE, HV2288'28.6 FEET NORTH OF R M 2, 19.9 FEET NORTHWEST OF TRIANGULATION-STATION HV2288'BURLING 1930 (P.B. AND P.P.), AND SET IN TOP OF A CONCRETE HV2288'FILLED 10-INCH TERRA COTTA PIPE FLUSH WITH THE GROUND. HV2288'NOTE-- TRIANGULATION-STATION BURLINE 1930 (P.B. AND P.P.) HV2288'NOT SUITABLE FOR LEVELING PURPOSES AND WAS NOT LEVELED OVER DURING HV2288'1960 LEVELING. HV2288 HV2288 STATION RECOVERY (2005) HV2288 HV2288'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV2288'TO REACH FROM PARKING LOT ABOUT 0.25 MILES WEST OF BELTWAY AT ENTRANCE HV2288'TO PARK ALONG ROUTE 193, PROCEED THROUGH METAL GATE ALONG WIDE TRAIL HV2288'OR ROAD IN A GENERALLY NORTHWARD DIRECTION APPROXIMATELY 0.19 MILES HV2288'(0.3 KM) PAST A SECONDARY TRAIL ENTERING AT A SHARP ANGLE FROM THE HV2288'LEFT. HV2288' HV2288'CONTINUE ALONG THE MAIN TRAIL TO A POINT ABOUT MIDWAY BETWEEN THE SIDE HV2288'TRAIL AND WHERE THE MAIN TRAIL CURVES TO THE LEFT. AT THAT MIDWAY HV2288'POINT, TURN RIGHT AND PROCEED CROSS-COUNTRY ABOUT 130-150 FEET TO THE HV2288'STATION. 1 National Geodetic Survey, Retrieval Date = MARCH 3, 2005 HV2289 *********************************************************************** HV2289 DESIGNATION - BURLING RM 2 PBPP HV2289 PID - HV2289 HV2289 STATE/COUNTY- VA/FAIRFAX HV2289 USGS QUAD - FALLS CHURCH (1994) HV2289 HV2289 *CURRENT SURVEY CONTROL HV2289 ___________________________________________________________________ HV2289* NAD 83(1986)- 38 57 32. (N) 077 11 48. (W) SCALED HV2289* NAVD 88 - 100.116 (meters) 328.46 (feet) ADJUSTED HV2289 ___________________________________________________________________ HV2289 GEOID HEIGHT- -31.74 (meters) GEOID03 HV2289 DYNAMIC HT - 100.063 (meters) 328.29 (feet) COMP HV2289 MODELED GRAV- 980,092.9 (mgal) NAVD 88 HV2289 HV2289 VERT ORDER - SECOND CLASS 0 HV2289 HV2289.The horizontal coordinates were scaled from a topographic map and have HV2289.an estimated accuracy of +/- 6 seconds. HV2289 HV2289.The orthometric height was determined by differential leveling HV2289.and adjusted by the National Geodetic Survey in June 1991. HV2289 HV2289.The geoid height was determined by GEOID03. HV2289 HV2289.The dynamic height is computed by dividing the NAVD 88 HV2289.geopotential number by the normal gravity value computed on the HV2289.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV2289.degrees latitude (g = 980.6199 gals.). HV2289 HV2289.The modeled gravity was interpolated from observed gravity values. HV2289 HV2289; North East Units Estimated Accuracy HV2289;SPC VA N - 2,144,240. 3,612,960. MT (+/- 180 meters Scaled) HV2289 HV2289 SUPERSEDED SURVEY CONTROL HV2289 HV2289 NGVD 29 (??/??/??) 100.339 (m) 329.20 (f) ADJUSTED 2 0 HV2289 HV2289.Superseded values are not recommended for survey control. HV2289.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV2289.See file dsdata.txt to determine how the superseded data were derived. HV2289 HV2289_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ096145(NAD 83) HV2289_MARKER: DR = REFERENCE MARK DISK HV2289_SETTING: 30 = MONUMENT HV2289_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY HV2289_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR HV2289+SATELLITE: SATELLITE OBSERVATIONS - January 29, 2005 HV2289 HV2289 HISTORY - Date Condition Report By HV2289 HISTORY - UNK MONUMENTED PBPP HV2289 HISTORY - 1960 GOOD CGS HV2289 HISTORY - 20050129 GOOD GEOCAC HV2289 HV2289 STATION DESCRIPTION HV2289 HV2289'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 HV2289'2.4 MI NW FROM LANGLEY. HV2289'ABOUT 2.15 MILES NORTHWEST ALONG STATE HIGHWAY 193 FROM THE HV2289'JUNCTION OF STATE HIGHWAY 123 AT LANGLEY, THENCE ABOUT 0.25 HV2289'MILE NORTH ALONG A PRIVATE DIRT ROAD, ABOUT 50 YARDS EAST OF HV2289'DIRT ROAD, 23 FEET WEST-SOUTHWEST OF A TWIN TRUNK 40-INCH POPLAR HV2289'TREE, 23 1/2 FEET EAST-NORTHEAST OF A 30-INCH TREE, 28.6 FEET HV2289'SOUTH OF BURLING R M 1, AND SET IN TOP OF A 7-BY 9-INCH STONE HV2289'MONUMENT FLUSH WITH THE GROUND. HV2289 HV2289 STATION RECOVERY (2005) HV2289 HV2289'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV2289'TO REACH FROM PARKING LOT ABOUT 0.25 MILES WEST OF BELTWAY AT ENTRANCE HV2289'TO PARK ALONG ROUTE 193, PROCEED THROUGH METAL GATE ALONG WIDE TRAIL HV2289'OR ROAD IN A GENERALLY NORTHWARD DIRECTION APPROXIMATELY 0.19 MILES HV2289'(0.3 KM) PAST A SECONDARY TRAIL ENTERING AT A SHARP ANGLE FROM THE HV2289'LEFT. HV2289' HV2289'CONTINUE ALONG THE MAIN TRAIL TO A POINT ABOUT MIDWAY BETWEEN THE SIDE HV2289'TRAIL AND WHERE THE MAIN TRAIL CURVES TO THE LEFT. AT THAT MIDWAY HV2289'POINT, TURN RIGHT AND PROCEED CROSS-COUNTRY ABOUT 130-150 FEET TO THE HV2289'STATION. 1 National Geodetic Survey, Retrieval Date = MARCH 3, 2005 HV8366 *********************************************************************** HV8366 DESIGNATION - CASTLE HV8366 PID - HV8366 HV8366 STATE/COUNTY- VA/FAIRFAX HV8366 USGS QUAD - FAIRFAX (1994) HV8366 HV8366 *CURRENT SURVEY CONTROL HV8366 ___________________________________________________________________ HV8366* NAD 83(1993)- 38 48 28.59578(N) 077 22 21.67314(W) ADJUSTED HV8366* NAVD 88 - 108.398 (meters) 355.64 (feet) ADJUSTED HV8366 ___________________________________________________________________ HV8366 LAPLACE CORR- -0.09 (seconds) DEFLEC99 HV8366 GEOID HEIGHT- -31.81 (meters) GEOID03 HV8366 DYNAMIC HT - 108.338 (meters) 355.44 (feet) COMP HV8366 MODELED GRAV- 980,075.3 (mgal) NAVD 88 HV8366 HV8366 HORZ ORDER - SECOND HV8366 VERT ORDER - THIRD HV8366 HV8366.The horizontal coordinates were established by classical geodetic methods HV8366.and adjusted by the National Geodetic Survey in November 1994. HV8366 HV8366.The orthometric height was determined by differential leveling HV8366.and adjusted by the National Geodetic Survey in September 2004. HV8366.No vertical observational check was made to the station. HV8366 HV8366.The Laplace correction was computed from DEFLEC99 derived deflections. HV8366 HV8366.The geoid height was determined by GEOID03. HV8366 HV8366.The dynamic height is computed by dividing the NAVD 88 HV8366.geopotential number by the normal gravity value computed on the HV8366.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV8366.degrees latitude (g = 980.6199 gals.). HV8366 HV8366.The modeled gravity was interpolated from observed gravity values. HV8366 HV8366; North East Units Scale Factor Converg. HV8366;SPC VA N - 2,127,282.301 3,597,911.548 MT 0.99995389 +0 42 12.9 HV8366;UTM 18 - 4,298,138.481 293,977.842 MT 1.00012270 -1 29 15.0 HV8366 HV8366! - Elev Factor x Scale Factor = Combined Factor HV8366!SPC VA N - 0.99998798 x 0.99995389 = 0.99994187 HV8366!UTM 18 - 0.99998798 x 1.00012270 = 1.00011068 HV8366 HV8366 SUPERSEDED SURVEY CONTROL HV8366 HV8366 NAD 83(1993)- 38 48 28.59483(N) 077 22 21.67880(W) AD( ) 2 HV8366 NAD 83(1986)- 38 48 28.59534(N) 077 22 21.68658(W) AD( ) 2 HV8366 NGVD 29 (01/12/90) 109. (m) 358. (f) VERT ANG HV8366 HV8366.Superseded values are not recommended for survey control. HV8366.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV8366.See file dsdata.txt to determine how the superseded data were derived. HV8366 HV8366_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH9397898138(NAD 83) HV8366_MARKER: DD = SURVEY DISK HV8366_SETTING: 4 = IRREGULAR CONCRETE MASS HV8366_STAMPING: CASTLE 1969 HV8366_MARK LOGO: VA-059 HV8366_MAGNETIC: O = OTHER; SEE DESCRIPTION HV8366_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY HV8366_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR HV8366+SATELLITE: SATELLITE OBSERVATIONS - January 31, 2005 HV8366 HV8366 HISTORY - Date Condition Report By HV8366 HISTORY - 1969 MONUMENTED VA-059 HV8366 HISTORY - 1969 GOOD VA-059 HV8366 HISTORY - 1977 GOOD VA-059 HV8366 HISTORY - 19920120 GOOD MSI HV8366 HISTORY - 20050131 GOOD ENGGRO HV8366 HV8366 STATION DESCRIPTION HV8366 HV8366'DESCRIBED BY FAIRFAX COUNTY VIRGINIA 1969 (HWC) HV8366'THE STATION IS 2.0 MILES NORTH NORTHEAST OF THE TOWN OF CLIFTON. HV8366' HV8366'TO REACH THE STATION FROM CLIFTON PROCEED NORTHEAST ON NEWMAN ROAD, HV8366'ROUTE 659, 2.0 MILES TO INTERSECTION COLCHESTER ROAD, ROUTE 612, THEN HV8366'LEFT (NORTHWEST) ON SAME APPROXIMATELY 900 FEET TO STATION ON RIGHT, HV8366'2.3 FEET SOUTH OF POWER POLE 47-12-22, 34 FEET EAST OF C AND P POLE HV8366'36, 5.4 FEET EAST OF A FENCE LINE, SET IN A CONCRETE MASS. HV8366' HV8366'STATION IS STANDARD FAIRFAX COUNTY DISK STAMPED---CASTLE 1969---. HV8366 HV8366 STATION RECOVERY (1969) HV8366 HV8366'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 1969 HV8366'RECOVERED IN GOOD CONDITION. HV8366 HV8366 STATION RECOVERY (1977) HV8366 HV8366'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 1977 (EYB) HV8366'THE STATION WAS RECOVERED IN GOOD CONDITION. POLE 22 THAT WAS HV8366'MENTIONED IN THE 1969 DESCRIPTION HAS BEEN RENUMBERED TO 36. ALL HV8366'OTHER INFORMATION IN THE ORIGINAL DESCRIPTION IS CORRECT. HV8366 HV8366 STATION RECOVERY (1992) HV8366 HV8366'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992 HV8366'STATION IS 2.0 MILES (3.2 KM) NORTH-NORTHEAST OF THE TOWN OF CLIFTON. HV8366'TO REACH THE STATION FROM CLIFTON PROCEED NORTHEAST ON NEWMAN ROAD, HV8366'ROUTE 659, 2.0 MILES (3.2 KM) TO INTERSECTION COLCHESTER ROAD, ROUTE HV8366'612, THEN LEFT (NORTHWEST) ON SAME APPROXIMATELY 900 FEET (274.3 M) HV8366'TO STATION ON RIGHT, 2.3 FEET (0.7 M) SOUTH OF POWER POLE 47-12-36, HV8366'34 FEET (10.4 M) EAST OF C AND P POLE 36, 5.4 FEET (1.6 M) EAST OF A HV8366'FENCE LINE, SET IN A CONCRETE MASS. HV8366 HV8366 STATION RECOVERY (2005) HV8366 HV8366'RECOVERY NOTE BY THE ENGINEERING GROUPE INC 2005 (BT) HV8366'THE SITE IS VERY OBSTRUCTED AND NOT SUITABLE FOR GPS. 1 National Geodetic Survey, Retrieval Date = MARCH 3, 2005 HV9112 *********************************************************************** HV9112 DESIGNATION - GPS 114 HV9112 PID - HV9112 HV9112 STATE/COUNTY- VA/FAIRFAX HV9112 USGS QUAD - FAIRFAX (1994) HV9112 HV9112 *CURRENT SURVEY CONTROL HV9112 ___________________________________________________________________ HV9112* NAD 83(1993)- 38 51 03.18706(N) 077 18 20.24170(W) ADJUSTED HV9112* NAVD 88 - 107.657 (meters) 353.20 (feet) ADJUSTED HV9112 ___________________________________________________________________ HV9112 X - 1,092,992.106 (meters) COMP HV9112 Y - -4,852,208.658 (meters) COMP HV9112 Z - 3,979,486.345 (meters) COMP HV9112 LAPLACE CORR- -1.20 (seconds) DEFLEC99 HV9112 ELLIP HEIGHT- 75.89 (meters) (05/17/02) GPS OBS HV9112 GEOID HEIGHT- -31.77 (meters) GEOID03 HV9112 DYNAMIC HT - 107.597 (meters) 353.01 (feet) COMP HV9112 MODELED GRAV- 980,072.1 (mgal) NAVD 88 HV9112 HV9112 HORZ ORDER - SECOND HV9112 VERT ORDER - THIRD HV9112 ELLP ORDER - FOURTH CLASS II HV9112 HV9112.The horizontal coordinates were established by GPS observations HV9112.and adjusted by the National Geodetic Survey in November 1994. HV9112 HV9112.The orthometric height was determined by differential leveling HV9112.and adjusted by the National Geodetic Survey in September 2004. HV9112.No vertical observational check was made to the station. HV9112 HV9112.The X, Y, and Z were computed from the position and the ellipsoidal ht. HV9112 HV9112.The Laplace correction was computed from DEFLEC99 derived deflections. HV9112 HV9112.The ellipsoidal height was determined by GPS observations HV9112.and is referenced to NAD 83. HV9112 HV9112.The geoid height was determined by GEOID03. HV9112 HV9112.The dynamic height is computed by dividing the NAVD 88 HV9112.geopotential number by the normal gravity value computed on the HV9112.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV9112.degrees latitude (g = 980.6199 gals.). HV9112 HV9112.The modeled gravity was interpolated from observed gravity values. HV9112 HV9112; North East Units Scale Factor Converg. HV9112;SPC VA N - 2,132,122.428 3,603,674.008 MT 0.99995666 +0 44 43.6 HV9112;SPC MD - 131,497.607 373,470.903 MT 0.99994994 -0 11 30.5 HV9112;SPC MD - 431,421.73 1,225,295.79 sFT 0.99994994 -0 11 30.5 HV9112;UTM 18 - 4,302,755.402 299,922.091 MT 1.00009296 -1 26 48.4 HV9112 HV9112! - Elev Factor x Scale Factor = Combined Factor HV9112!SPC VA N - 0.99998809 x 0.99995666 = 0.99994475 HV9112!SPC MD - 0.99998809 x 0.99994994 = 0.99993803 HV9112!UTM 18 - 0.99998809 x 1.00009296 = 1.00008105 HV9112 HV9112: Primary Azimuth Mark Grid Az HV9112:SPC VA N - GPS 115 359 54 51.2 HV9112:SPC MD - GPS 115 000 51 05.3 HV9112:UTM 18 - GPS 115 002 06 23.2 HV9112 HV9112|---------------------------------------------------------------------| HV9112| PID Reference Object Distance Geod. Az | HV9112| dddmmss.s | HV9112| HV9113 GPS 115 APPROX. 0.9 KM 0003934.8 | HV9112|---------------------------------------------------------------------| HV9112 HV9112 SUPERSEDED SURVEY CONTROL HV9112 HV9112 ELLIP H (11/14/94) 75.83 (m) GP( ) 4 2 HV9112 NAD 83(1993)- 38 51 03.18600(N) 077 18 20.24641(W) AD( ) 2 HV9112 NGVD 29 (09/10/92) 108.0 (m) 354. (f) GPS OBS HV9112 HV9112.Superseded values are not recommended for survey control. HV9112.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV9112.See file dsdata.txt to determine how the superseded data were derived. HV9112 HV9112_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9992202755(NAD 83) HV9112_MARKER: DD = SURVEY DISK HV9112_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT HV9112_STAMPING: GPS 114 1991 HV9112_MARK LOGO: VA-059 HV9112_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT HV9112_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO HV9112+STABILITY: SURFACE MOTION HV9112_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR HV9112+SATELLITE: SATELLITE OBSERVATIONS - February 07, 2005 HV9112 HV9112 HISTORY - Date Condition Report By HV9112 HISTORY - 1991 MONUMENTED MSI HV9112 HISTORY - 19920129 GOOD MSI HV9112 HISTORY - 20050207 GOOD DEWDAV HV9112 HV9112 STATION DESCRIPTION HV9112 HV9112'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991 HV9112'THE STATION IS LOCATED IN FAIRFAX COUNTY, VIRGINIA, IN THE CITY OF HV9112'FAIRFAX. TO REACH THE STATION FROM THE INTERSECTION OF CHAIN BRIDGE HV9112'ROAD (S.R. 123) AND LEE HIGHWAY (U.S.29/50), PROCEED NORTHEAST ALONG HV9112'LEE HIGHWAY FOR APPROXIMATELY 0.2 MI (0.3 KM) TO THE INTERSECTION HV9112'WITH UNIVERSITY DRIVE, TURN RIGHT ONTO UNIVERSITY DRIVE AND TRAVEL HV9112'0.6 MI (1.0 KM) SOUTHWESTERLY TO THE INTERSECTION WITH LAYTON HALL HV9112'DRIVE. TURN LEFT THEN RIGHT ONTO LAYTON HALL DRIVE AND PROCEED TO HV9112'THE STATION ONTHE RIGHT, OPPOSITE A ROW OF TOWNHOMES WITH THE NUMBER HV9112'10419 AT THE WESTERN END. HV9112'THE STATION IS A FAIRFAX COUNTY DISK SET IN THE TOP OF A CONCRETE HV9112'MONUMENT APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS HV9112'114 1991. THE DISK IS LOCATED NORTH OF LAYTON HALL DRIVE, SOUTH OF HV9112'A CREEK BETWEEN KENMORE DRIVE AND LAYTON HALL DRIVE, 93.2 FT HV9112'(28.4 M) EAST OF A FIRE HYDRANT ON THE SOUTH SIDE LAYTON HALL DRIVE, HV9112'72.6 FT (22.1 M) NORTHEAST OF THE SOUTHEASTERN CORNER OF A CATCH HV9112'BASIN ON THE SOUTH SIDE OF LAYTON HALL DRIVE, 52.6 FT (16.0 M) HV9112'NORTHWEST OF LIGHTPOLE NUMBER QM-98, AND 29.1 FT (8.9 M) SOUTHWEST OF HV9112'THE NORTHEASTERNMOST END OF THE EASTERN WINGWALL OF A CONCRETE HV9112'HEADWALL NORTH OF LAYTON HALL DRIVE. HV9112 HV9112 STATION RECOVERY (1992) HV9112 HV9112'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992 HV9112'RECOVERED IN GOOD CONDITION. HV9112 HV9112 STATION RECOVERY (2005) HV9112 HV9112'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KC) HV9112'RECOVERED IN GOOD CONDITION. HV9112'APPROXIMATLY 1' BELOW GROUND SURFACE AND 3.5' EAST OF SIGN POST. 1 National Geodetic Survey, Retrieval Date = MARCH 3, 2005 HV9131 *********************************************************************** HV9131 DESIGNATION - GPS 142 HV9131 PID - HV9131 HV9131 STATE/COUNTY- VA/FAIRFAX HV9131 USGS QUAD - FALLS CHURCH (1994) HV9131 HV9131 *CURRENT SURVEY CONTROL HV9131 ___________________________________________________________________ HV9131* NAD 83(1993)- 38 56 12.21992(N) 077 07 43.74169(W) ADJUSTED HV9131* NAVD 88 - 71.759 (meters) 235.43 (feet) ADJUSTED HV9131 ___________________________________________________________________ HV9131 X - 1,106,620.894 (meters) COMP HV9131 Y - -4,842,952.315 (meters) COMP HV9131 Z - 3,986,880.898 (meters) COMP HV9131 LAPLACE CORR- -2.40 (seconds) DEFLEC99 HV9131 ELLIP HEIGHT- 39.96 (meters) (05/17/02) GPS OBS HV9131 GEOID HEIGHT- -31.85 (meters) GEOID03 HV9131 DYNAMIC HT - 71.720 (meters) 235.30 (feet) COMP HV9131 MODELED GRAV- 980,095.3 (mgal) NAVD 88 HV9131 HV9131 HORZ ORDER - SECOND HV9131 VERT ORDER - THIRD HV9131 ELLP ORDER - FOURTH CLASS II HV9131 HV9131.The horizontal coordinates were established by GPS observations HV9131.and adjusted by the National Geodetic Survey in November 1994. HV9131 HV9131.The orthometric height was determined by differential leveling HV9131.and adjusted by the National Geodetic Survey in September 2004. HV9131.No vertical observational check was made to the station. HV9131 HV9131.The X, Y, and Z were computed from the position and the ellipsoidal ht. HV9131 HV9131.The Laplace correction was computed from DEFLEC99 derived deflections. HV9131 HV9131.The ellipsoidal height was determined by GPS observations HV9131.and is referenced to NAD 83. HV9131 HV9131.The geoid height was determined by GEOID03. HV9131 HV9131.The dynamic height is computed by dividing the NAVD 88 HV9131.geopotential number by the normal gravity value computed on the HV9131.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV9131.degrees latitude (g = 980.6199 gals.). HV9131 HV9131.The modeled gravity was interpolated from observed gravity values. HV9131 HV9131; North East Units Scale Factor Converg. HV9131;SPC VA N - 2,141,865.100 3,618,877.641 MT 0.99996387 +0 51 20.8 HV9131;SPC MD - 140,990.270 388,831.661 MT 0.99995041 -0 04 51.1 HV9131;SPC MD - 462,565.58 1,275,691.87 sFT 0.99995041 -0 04 51.1 HV9131;UTM 18 - 4,311,909.990 315,488.913 MT 1.00001923 -1 20 17.7 HV9131 HV9131! - Elev Factor x Scale Factor = Combined Factor HV9131!SPC VA N - 0.99999373 x 0.99996387 = 0.99995760 HV9131!SPC MD - 0.99999373 x 0.99995041 = 0.99994414 HV9131!UTM 18 - 0.99999373 x 1.00001923 = 1.00001296 HV9131 HV9131: Primary Azimuth Mark Grid Az HV9131:SPC VA N - GPS 143 150 16 36.3 HV9131:SPC MD - GPS 143 151 12 48.2 HV9131:UTM 18 - GPS 143 152 28 14.8 HV9131 HV9131|---------------------------------------------------------------------| HV9131| PID Reference Object Distance Geod. Az | HV9131| dddmmss.s | HV9131| HV9132 GPS 143 APPROX. 1.6 KM 1510757.1 | HV9131|---------------------------------------------------------------------| HV9131 HV9131 SUPERSEDED SURVEY CONTROL HV9131 HV9131 ELLIP H (11/14/94) 39.93 (m) GP( ) 4 2 HV9131 NAD 83(1993)- 38 56 12.21875(N) 077 07 43.74394(W) AD( ) 2 HV9131 NGVD 29 (09/10/92) 72.0 (m) 236. (f) GPS OBS HV9131 HV9131.Superseded values are not recommended for survey control. HV9131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV9131.See file dsdata.txt to determine how the superseded data were derived. HV9131 HV9131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1548911910(NAD 83) HV9131_MARKER: DD = SURVEY DISK HV9131_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT HV9131_STAMPING: GPS 142 1991 HV9131_MARK LOGO: VA-059 HV9131_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT HV9131_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO HV9131+STABILITY: SURFACE MOTION HV9131_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR HV9131+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992 HV9131 HV9131 HISTORY - Date Condition Report By HV9131 HISTORY - 1991 MONUMENTED MSI HV9131 HISTORY - 19920129 GOOD MSI HV9131 HISTORY - 20050129 POOR GEOCAC HV9131 HV9131 STATION DESCRIPTION HV9131 HV9131'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991 HV9131'THE STATION IS LOCATED IN FAIRFAX COUNTY, VIRGINIA, APPROXIMATELY 0.5 HV9131'MI (0.8 KM) NORTHWEST OF THE ARLINGTON COUNTY LINE. TO REACH THE HV9131'STATION FROM THE INTERSECTION OF KIRBY ROAD (S.R. 695) AND CHAIN HV9131'BRIDGE ROAD (S.R. 123), PROCEED SOUTHEAST ALONG CHAIN BRIDGE ROAD FOR HV9131'APPROXIMATELY 0.45 MI (0.72 KM) TO THE INTERSECTION WITH MERRIE RIDGE HV9131'ROAD (S.R. 5055) AND THE STATION LOCATED IN THE SOUTHWEST CORNER OF HV9131'THE INTERSECTION, NEAR A SEWER MANHOLE. HV9131'THE STATION IS A FAIRFAX COUNTY DISK SET IN THE TOP OF A CONCRETE HV9131'MONUMENT FLUSH WITH THE GROUND SURFACE, STAMPED GPS 142 1991. THE HV9131'DISK IS LOCATED IN THE SOUTHWEST CORNER OF THE INTERSECTION, 18.8 FT HV9131'(5.7 M) SOUTHEAST OF A SEWER MANHOLE, 11.0 FT (3.4 M) SOUTHWEST OF HV9131'THE SOUTHERN EDGE OF THE PAVEMENT OF CHAIN BRIDGE ROAD, AND 7.6 FT HV9131'(2.3 M) WEST OF THE CORNER OF A CONCRETE SIDEWALK. HV9131 HV9131 STATION RECOVERY (1992) HV9131 HV9131'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992 HV9131'RECOVERED IN GOOD CONDITION. HV9131 HV9131 STATION RECOVERY (2005) HV9131 HV9131'RECOVERY NOTE BY GEOCACHING 2005 (APC) HV9131'MARK LOCATED AS DESCRIBED AND ABOUT 7 FEET SOUTHWEST OF A METAL POST HV9131'SUPPORTING A BUS STOP SIGN. HV9131' HV9131'DISK APPEARS ASKEW AND IS AT AN ANGLE FROM THE HORIZONTAL. DISK DOES HV9131'APPEAR TO BE FIRMLY ATTACHED TO ITS CONCRETE MOUNTING. AREA IS MARKED HV9131'FOR FIBEROPTIC CABLE AND THE CABLE ROUTE APPEARS TO GO UNDER THE MARK, HV9131'WHICH MAY HAVE BEEN DISPLACED IN THE PROCESS OF INSTALLING THE CABLE. 1 National Geodetic Survey, Retrieval Date = MARCH 3, 2005 HV9150 *********************************************************************** HV9150 DESIGNATION - GPS 160 HV9150 PID - HV9150 HV9150 STATE/COUNTY- VA/FAIRFAX HV9150 USGS QUAD - FAIRFAX (1994) HV9150 HV9150 *CURRENT SURVEY CONTROL HV9150 ___________________________________________________________________ HV9150* NAD 83(1993)- 38 48 14.51252(N) 077 21 40.61487(W) ADJUSTED HV9150* NAVD 88 - 104.856 (meters) 344.02 (feet) ADJUSTED HV9150 ___________________________________________________________________ HV9150 X - 1,088,991.051 (meters) COMP HV9150 Y - -4,856,448.147 (meters) COMP HV9150 Z - 3,975,432.461 (meters) COMP HV9150 LAPLACE CORR- -0.33 (seconds) DEFLEC99 HV9150 ELLIP HEIGHT- 73.06 (meters) (05/17/02) GPS OBS HV9150 GEOID HEIGHT- -31.82 (meters) GEOID03 HV9150 DYNAMIC HT - 104.798 (meters) 343.82 (feet) COMP HV9150 MODELED GRAV- 980,073.5 (mgal) NAVD 88 HV9150 HV9150 HORZ ORDER - SECOND HV9150 VERT ORDER - THIRD HV9150 ELLP ORDER - FOURTH CLASS II HV9150 HV9150.The horizontal coordinates were established by GPS observations HV9150.and adjusted by the National Geodetic Survey in November 1994. HV9150 HV9150.The orthometric height was determined by differential leveling HV9150.and adjusted by the National Geodetic Survey in September 2004. HV9150 HV9150.The X, Y, and Z were computed from the position and the ellipsoidal ht. HV9150 HV9150.The Laplace correction was computed from DEFLEC99 derived deflections. HV9150 HV9150.The ellipsoidal height was determined by GPS observations HV9150.and is referenced to NAD 83. HV9150 HV9150.The geoid height was determined by GEOID03. HV9150 HV9150.The dynamic height is computed by dividing the NAVD 88 HV9150.geopotential number by the normal gravity value computed on the HV9150.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HV9150.degrees latitude (g = 980.6199 gals.). HV9150 HV9150.The modeled gravity was interpolated from observed gravity values. HV9150 HV9150; North East Units Scale Factor Converg. HV9150;SPC VA N - 2,126,860.300 3,598,907.459 MT 0.99995367 +0 42 38.5 HV9150;SPC MD - 126,314.185 368,618.932 MT 0.99995063 -0 13 36.3 HV9150;SPC MD - 414,415.79 1,209,377.28 sFT 0.99995063 -0 13 36.3 HV9150;UTM 18 - 4,297,678.638 294,957.055 MT 1.00011774 -1 28 48.8 HV9150 HV9150! - Elev Factor x Scale Factor = Combined Factor HV9150!SPC VA N - 0.99998854 x 0.99995367 = 0.99994221 HV9150!SPC MD - 0.99998854 x 0.99995063 = 0.99993917 HV9150!UTM 18 - 0.99998854 x 1.00011774 = 1.00010628 HV9150 HV9150: Primary Azimuth Mark Grid Az HV9150:SPC VA N - GPS 159 002 56 52.7 HV9150:SPC MD - GPS 159 003 53 07.5 HV9150:UTM 18 - GPS 159 005 08 20.0 HV9150 HV9150|---------------------------------------------------------------------| HV9150| PID Reference Object Distance Geod. Az | HV9150| dddmmss.s | HV9150| HV9148 GPS 159 APPROX. 1.4 KM 0033931.2 | HV9150|---------------------------------------------------------------------| HV9150 HV9150 SUPERSEDED SURVEY CONTROL HV9150 HV9150 ELLIP H (11/14/94) 72.98 (m) GP( ) 4 2 HV9150 NAD 83(1993)- 38 48 14.51170(N) 077 21 40.62099(W) AD( ) 2 HV9150 NGVD 29 (09/10/92) 105.2 (m) 345. (f) GPS OBS HV9150 HV9150.Superseded values are not recommended for survey control. HV9150.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HV9150.See file dsdata.txt to determine how the superseded data were derived. HV9150 HV9150_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH9495797679(NAD 83) HV9150_MARKER: DD = SURVEY DISK HV9150_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT HV9150_STAMPING: GPS 160 1991 HV9150_MARK LOGO: VA-059 HV9150_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT HV9150_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO HV9150+STABILITY: SURFACE MOTION HV9150_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR HV9150+SATELLITE: SATELLITE OBSERVATIONS - January 31, 2005 HV9150 HV9150 HISTORY - Date Condition Report By HV9150 HISTORY - 1991 MONUMENTED MSI HV9150 HISTORY - 19920129 GOOD MSI HV9150 HISTORY - 20010105 GOOD DEWDAV HV9150 HISTORY - 20020705 GOOD DEWDAV HV9150 HISTORY - 20050131 GOOD ENGGRO HV9150 HV9150 STATION DESCRIPTION HV9150 HV9150'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991 HV9150'THE STATION IS LOCATED IN FAIRFAX COUNTY, VIRGINIA, APPROXIMATELY 2.0 HV9150'MI (3.2 KM) NORTHEAST OF THE TOWN OF CLIFTON. TO REACH THE STATION HV9150'FROM THE INTERSECTION OF CLIFTON ROAD (S.R. 645) AND POPES HEAD ROAD HV9150'(S.R. 654), PROCEED EAST ALONG POPES HEAD ROAD FOR APPROXIMATELY 1.3 HV9150'MI (2.1 KM) TO THE INTERSECTION WITH COLCHESTER ROAD (S.R. 612). TURN HV9150'RIGHT ONTO COLCHESTER ROAD AND TRAVEL SOUTH FOR 0.75 MI (1.21 KM) TO HV9150'THE INTERSECTION WITH SADDLEHORN DRIVE (S.R. 5475). TURN LEFT ONTO HV9150'SADDLEHORN DRIVE AND PROCEED EAST FOR 0.1 MI (0.2 KM) TO THE HV9150'INTERSECTION WITH QUEENS BRIGADE DRIVE (S.R. 5464). TURN RIGHT ONTO HV9150'QUEENS BRIGADE DRIVE AND TRAVEL SOUTH AND EAST FOR APPROXIMATELY 0.5 HV9150'MI (0.8 KM) TO THE STATION ON THE RIGHT, SOUTH OF THE INTERSECTION HV9150'WITH QUEENS BRIGADE COURT (S.R. 5459). HV9150'THE STATION IS A FAIRFAX COUNTY DISK SET IN THE TOP OF A CONCRETE HV9150'MONUMENT APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS HV9150'160 1991. THE DISK IS LOCATED IN THE FRONT LAWN OF RESIDENCE NUMBER HV9150'12143, 65.6 FT (20.0 M) SOUTHWEST OF THE SOUTHWESTERN EDGE OF THE HV9150'PAVEMENT OF QUEENS BRIGADE COURT, 42.3 FT (12.9 M) WEST OF A 0.23 FT HV9150'(0.07 M) MAPLE TREE, 36.4 FT (11.1 M) NORTHEAST THE NORTHEASTERN EDGE HV9150'OF THE PAVEMENT OF DRIVEWAY NUMBER 12143, AND 38.7 FT (11.8 M) HV9150'SOUTHEAST OF THE SOUTHEASTERN EDGE OF THE PAVEMENT OF QUEENS BRIGADE HV9150'DRIVE. HV9150 HV9150 STATION RECOVERY (1992) HV9150 HV9150'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992 HV9150'RECOVERED IN GOOD CONDITION. HV9150 HV9150 STATION RECOVERY (2001) HV9150 HV9150'RECOVERY NOTE BY DEWBERRY DAVIS 2001 (CSW) HV9150'RECOVERED IN GOOD CONDITION. HV9150 HV9150 STATION RECOVERY (2002) HV9150 HV9150'RECOVERY NOTE BY DEWBERRY DAVIS 2002 (CSW) HV9150'RECOVERED IN GOOD CONDITION. HV9150 HV9150 STATION RECOVERY (2005) HV9150 HV9150'RECOVERY NOTE BY THE ENGINEERING GROUPE INC 2005 (BT) HV9150'NOT SUITABLE FOR STATIC SURVEY BUT AN RTK TIE WAS MADE.