The NGS Data Sheet
DATABASE = ,PROGRAM = datasheet, VERSION = 7.67
1 National Geodetic Survey, Retrieval Date = MAY 11, 2009
AI4421 ***********************************************************************
AI4421 DESIGNATION - W M WEST
AI4421 PID - AI4421
AI4421 STATE/COUNTY- DC/DISTRICT OF COLUMBIA
AI4421 USGS QUAD - WASHINGTON WEST (1983)
AI4421
AI4421 *CURRENT SURVEY CONTROL
AI4421 ___________________________________________________________________
AI4421* NAD 83(2007)- 38 53 20.44273(N) 077 02 21.79885(W) ADJUSTED
AI4421* NAVD 88 - 2.129 (meters) 6.98 (feet) ADJUSTED
AI4421 ___________________________________________________________________
AI4421 EPOCH DATE - 2002.00
AI4421 X - 1,114,912.593 (meters) COMP
AI4421 Y - -4,844,408.737 (meters) COMP
AI4421 Z - 3,982,715.289 (meters) COMP
AI4421 LAPLACE CORR- -2.63 (seconds) DEFLEC99
AI4421 ELLIP HEIGHT- -29.936 (meters) (02/10/07) ADJUSTED
AI4421 GEOID HEIGHT- -32.05 (meters) GEOID03
AI4421 DYNAMIC HT - 2.128 (meters) 6.98 (feet) COMP
AI4421
AI4421 ------- Accuracy Estimates (at 95% Confidence Level in cm) --------
AI4421 Type PID Designation North East Ellip
AI4421 -------------------------------------------------------------------
AI4421 NETWORK AI4421 W M WEST 0.57 0.43 0.86
AI4421 -------------------------------------------------------------------
AI4421 MODELED GRAV- 980,097.1 (mgal) NAVD 88
AI4421
AI4421 VERT ORDER - FIRST CLASS II
AI4421
AI4421.The horizontal coordinates were established by GPS observations
AI4421.and adjusted by the National Geodetic Survey in February 2007.
AI4421
AI4421.The datum tag of NAD 83(2007) is equivalent to NAD 83(NSRS2007).
AI4421.See www.ngs.noaa.gov/NationalReadjustment for more information.
AI4421.The horizontal coordinates are valid at the epoch date displayed above.
AI4421.The epoch date for horizontal control is a decimal equivalence
AI4421.of Year/Month/Day.
AI4421
AI4421.The orthometric height was determined by differential leveling
AI4421.and adjusted in April 2000.
AI4421
AI4421.The X, Y, and Z were computed from the position and the ellipsoidal ht.
AI4421
AI4421.The Laplace correction was computed from DEFLEC99 derived deflections.
AI4421
AI4421.The ellipsoidal height was determined by GPS observations
AI4421.and is referenced to NAD 83.
AI4421
AI4421.The geoid height was determined by GEOID03.
AI4421
AI4421.The dynamic height is computed by dividing the NAVD 88
AI4421.geopotential number by the normal gravity value computed on the
AI4421.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
AI4421.degrees latitude (g = 980.6199 gals.).
AI4421
AI4421.The modeled gravity was interpolated from observed gravity values.
AI4421
AI4421; North East Units Scale Factor Converg.
AI4421;UTM 18 - 4,306,436.987 323,122.218 MT 0.99998526 -1 16 50.5
AI4421
AI4421! - Elev Factor x Scale Factor = Combined Factor
AI4421!UTM 18 - 1.00000470 x 0.99998526 = 0.99998996
AI4421
AI4421|---------------------------------------------------------------------|
AI4421| PID Reference Object Distance Geod. Az |
AI4421| dddmmss.s |
AI4421| HV4442 WASHINGTON MONUMENT 1913 363.429 METERS 08200 |
AI4421|---------------------------------------------------------------------|
AI4421
AI4421 SUPERSEDED SURVEY CONTROL
AI4421
AI4421 NAD 83(1993)- 38 53 20.44286(N) 077 02 21.79848(W) AD( ) A
AI4421 ELLIP H (09/11/02) -29.915 (m) GP( ) 4 2
AI4421 NAVD 88 (09/11/02) 2.13 (m) 7.0 (f) LEVELING 3
AI4421
AI4421.Superseded values are not recommended for survey control.
AI4421.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AI4421.See file dsdata.txt to determine how the superseded data were derived.
AI4421
AI4421_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2312206437(NAD 83)
AI4421_MARKER: DV = VERTICAL CONTROL DISK
AI4421_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
AI4421_SP_SET: MANHOLE COVER
AI4421_STAMPING: W M WEST 1999
AI4421_MARK LOGO: NGS
AI4421_MAGNETIC: N = NO MAGNETIC MATERIAL
AI4421_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
AI4421_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
AI4421+SATELLITE: SATELLITE OBSERVATIONS - December 16, 2005
AI4421
AI4421 HISTORY - Date Condition Report By
AI4421 HISTORY - 1999 MONUMENTED NGS
AI4421 HISTORY - 20031219 GOOD ENGGRO
AI4421 HISTORY - 20051216 GOOD GEOCAC
AI4421 HISTORY - 20070717 GOOD USACE
AI4421 HISTORY - 20071116 GOOD PB
AI4421
AI4421 STATION DESCRIPTION
AI4421
AI4421'DESCRIBED BY NATIONAL GEODETIC SURVEY 1999 (RLA)
AI4421'0.1 MILE (0.2 KM) NORTH ALONG 17TH STREET. FROM THE JUNCTION OF
AI4421'INDEPENDENCE AVENUE (WESTBOUND) IN THE TOP OF THE NORTHEAST CONCRETE
AI4421'CORNER OF A CATCH BASIN WITH A STEEL SEWER COVER. 11.2 FEET (3.4 M)
AI4421'WEST OF WEST EDGE OF SIDEWALK, 4.2 FEET (1.3 M) SOUTH OF A FIRE
AI4421'HYDRANT, 19.4 FEET (5.9 M) NORTH OF A STEEL POLE WITH SIGNAL LIGHTS,
AI4421'26.0 FEET (7.9 M) EAST OF CENTERLINE OF 4 LANES FOR 17TH STREET, 4.0
AI4421'FEET (1.2 M) EAST OF EAST CURB.
AI4421
AI4421 STATION RECOVERY (2003)
AI4421
AI4421'RECOVERY NOTE BY THE ENGINEERING GROUPE INC 2003 (BWJ)
AI4421'RECOVERED IN GOOD CONDITION.
AI4421
AI4421 STATION RECOVERY (2005)
AI4421
AI4421'RECOVERY NOTE BY GEOCACHING 2005 (WD)
AI4421'RECOVERED IN GOOD CONDITION.
AI4421
AI4421 STATION RECOVERY (2007)
AI4421
AI4421'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2007 (JBC)
AI4421'RECOVERED IN GOOD CONDITION.
AI4421
AI4421 STATION RECOVERY (2007)
AI4421
AI4421'RECOVERY NOTE BY PBS&J 2007
AI4421'RECOVERED IN GOOD CONDITION.
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