1 National Geodetic Survey, Retrieval Date = APRIL 6, 2005 MY0471 *********************************************************************** MY0471 DESIGNATION - T 31 MY0471 PID - MY0471 MY0471 STATE/COUNTY- MA/BRISTOL MY0471 USGS QUAD - MY0471 MY0471 *CURRENT SURVEY CONTROL MY0471 ___________________________________________________________________ MY0471* NAD 83(1986)- 42 02 08. (N) 071 13 04. (W) SCALED MY0471* NAVD 88 - 53.100 (meters) 174.21 (feet) ADJUSTED MY0471 ___________________________________________________________________ MY0471 GEOID HEIGHT- -28.76 (meters) GEOID03 MY0471 DYNAMIC HT - 53.084 (meters) 174.16 (feet) COMP MY0471 MODELED GRAV- 980,330.4 (mgal) NAVD 88 MY0471 MY0471 VERT ORDER - FIRST CLASS II MY0471 MY0471.The horizontal coordinates were scaled from a topographic map and have MY0471.an estimated accuracy of +/- 6 seconds. MY0471 MY0471.The orthometric height was determined by differential leveling MY0471.and adjusted by the National Geodetic Survey in June 1991. MY0471 MY0471.The geoid height was determined by GEOID03. MY0471 MY0471.The dynamic height is computed by dividing the NAVD 88 MY0471.geopotential number by the normal gravity value computed on the MY0471.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 MY0471.degrees latitude (g = 980.6199 gals.). MY0471 MY0471.The modeled gravity was interpolated from observed gravity values. MY0471 MY0471; North East Units Estimated Accuracy MY0471;SPC MA M - 865,060. 223,370. MT (+/- 180 meters Scaled) MY0471 MY0471 SUPERSEDED SURVEY CONTROL MY0471 MY0471 NGVD 29 (??/??/92) 53.339 (m) 175.00 (f) ADJ UNCH 1 2 MY0471 MY0471.Superseded values are not recommended for survey control. MY0471.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. MY0471.See file dsdata.txt to determine how the superseded data were derived. MY0471 MY0471_U.S. NATIONAL GRID SPATIAL ADDRESS: 19TCG164561(NAD 83) MY0471_MARKER: DB = BENCH MARK DISK MY0471_SETTING: 36 = SET IN A MASSIVE STRUCTURE MY0471_SP_SET: ABUTMENT MY0471_STAMPING: T 31 1965 MY0471_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL MY0471 MY0471 HISTORY - Date Condition Report By MY0471 HISTORY - 1965 MONUMENTED CGS MY0471 HISTORY - 20041026 POOR USPSQD MY0471 MY0471 STATION DESCRIPTION MY0471 MY0471'DESCRIBED BY COAST AND GEODETIC SURVEY 1965 MY0471'AT MANSFIELD. MY0471'AT MANSFIELD, ALONG THE NEW YORK, NEW HAVEN AND HARTFORD MY0471'RAILROAD, AT THE NORTH MAIN STREET UNDERPASS, SET IN THE TOP MY0471'AT THE NORTHWEST END OF THE NORTHEAST CONCRETE ABUTMENT OF THE MY0471'UNDERPASS, 9.9 FEET NORTHWEST OF THE NORTHWEST RAIL, 3.8 FEET MY0471'SOUTH OF THE NORTH CORNER OF THE ABUTMENT AND ABOUT LEVEL WITH MY0471'THE TRACK. NOTE-- ABOUT 0.2 MILE NORTHEAST OF THE STATION. MY0471 MY0471 STATION RECOVERY (2004) MY0471 MY0471'RECOVERY NOTE BY US POWER SQUADRON 2004 (FC) MY0471'MARK STILL THERE BUT IS IN SEVERLY DEGRADED CONDITION, PARTIALLY MY0471'READABLE, MUTILATED.