1 National Geodetic Survey, Retrieval Date = DECEMBER 8, 2003 HT0473 *********************************************************************** HT0473 DESIGNATION - H 1242 HT0473 PID - HT0473 HT0473 STATE/COUNTY- CA/SAN MATEO HT0473 USGS QUAD - SAN FRANCISCO SOUTH (1995) HT0473 HT0473 *CURRENT SURVEY CONTROL HT0473 ___________________________________________________________________ HT0473* NAD 83(1986)- 37 39 20. (N) 122 29 31. (W) SCALED HT0473* NAVD 88 - 48.461 (meters) 158.99 (feet) ADJUSTED HT0473 ___________________________________________________________________ HT0473 GEOID HEIGHT- -32.74 (meters) GEOID99 HT0473 DYNAMIC HT - 48.429 (meters) 158.89 (feet) COMP HT0473 MODELED GRAV- 979,969.1 (mgal) NAVD 88 HT0473 HT0473 VERT ORDER - FIRST CLASS I HT0473 HT0473.The horizontal coordinates were scaled from a topographic map and have HT0473.an estimated accuracy of +/- 6 seconds. HT0473 HT0473.The orthometric height was determined by differential leveling HT0473.and adjusted by the National Geodetic Survey in June 1991. HT0473 HT0473.The geoid height was determined by GEOID99. HT0473 HT0473.The dynamic height is computed by dividing the NAVD 88 HT0473.geopotential number by the normal gravity value computed on the HT0473.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 HT0473.degrees latitude (g = 980.6199 gals.). HT0473 HT0473.The modeled gravity was interpolated from observed gravity values. HT0473 HT0473; North East Units Estimated Accuracy HT0473;SPC CA 3 - 630,120. 1,824,250. MT (+/- 180 meters Scaled) HT0473 HT0473 SUPERSEDED SURVEY CONTROL HT0473 HT0473 NGVD 29 (??/??/92) 47.620 (m) 156.23 (f) ADJ UNCH 1 1 HT0473 HT0473.Superseded values are not recommended for survey control. HT0473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. HT0473.See file dsdata.txt to determine how the superseded data were derived. HT0473 HT0473_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG448677(NAD 83) HT0473_MARKER: DB = BENCH MARK DISK HT0473_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+) HT0473_STAMPING: H 1242 1972 HT0473_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL HT0473 HT0473 HISTORY - Date Condition Report By HT0473 HISTORY - 1972 MONUMENTED NGS HT0473 HISTORY - 1978 GOOD NGS HT0473 HISTORY - 20031029 GOOD NGS HT0473 HT0473 STATION DESCRIPTION HT0473 HT0473'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 HT0473'AT PACIFICA. HT0473'0.5 MILE NORTH ALONG PALMETTO AVENUE FROM THE JUNCTIN OF WEST HT0473'MAVON DRIVE AT PACIFICA, ALSO 0.35 MILE SOUTH ALONG PALMETTO HT0473'AVENUE FROM THE JUNCTION OF WESTLINE DRIVE AT PACIFICA, 1 POLE HT0473'SOUTH OF A POWER LINE CROSSING, 21 FEET WEST OF THE CENTER LINE HT0473'OF THE AVENUE, 2 FEET SOUTH OF A POWER POLE WITH GUY WIRE, 25 1/2 HT0473'FEET WEST OF THE CENTER OF A 30-INCH STEEL MAN HOLE COVER, 2 FEET HT0473'NORTH OF A WITNESS POST, A DISK ON THE TOP OF A 5/8-INCH COPPER HT0473'COATED ROD DRIVEN TO GRADUAL REFUSAL AT A DEPTH OF 25 FEET, THE HT0473'UPPER PORTION OF THE ROD IS ENCASED IN A CONCRETE POST PROJECTING HT0473'0.1 FOOT ABOVE THE GROUND. HT0473 HT0473 STATION RECOVERY (1978) HT0473 HT0473'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 HT0473'RECOVERED IN GOOD CONDITION. HT0473 HT0473 STATION RECOVERY (2003) HT0473 HT0473'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003 (GUY) HT0473'RECOVERED IN GOOD CONDITION. WEST MAVON DRIVE NO LONGER EXISTS BUT IS HT0473'PART OF A SUBDIVISION. THE MARK IS NOW IN (BUT NOT EMBEDDED IN) A HT0473'CONCRETE SIDEWALK.