1 National Geodetic Survey, Retrieval Date = SEPTEMBER 7, 2005 DX1930 *********************************************************************** DX1930 DESIGNATION - 1 E 81 69 DX1930 PID - DX1930 DX1930 STATE/COUNTY- CA/ORANGE DX1930 USGS QUAD - TUSTIN (1981) DX1930 DX1930 *CURRENT SURVEY CONTROL DX1930 ___________________________________________________________________ DX1930* NAD 83(1986)- 33 42 31. (N) 117 51 58. (W) SCALED DX1930* NAVD 88 - 14.083 (meters) 46.20 (feet) ADJUSTED DX1930 ___________________________________________________________________ DX1930 GEOID HEIGHT- -34.95 (meters) GEOID03 DX1930 DYNAMIC HT - 14.068 (meters) 46.15 (feet) COMP DX1930 MODELED GRAV- 979,593.6 (mgal) NAVD 88 DX1930 DX1930 VERT ORDER - FIRST CLASS I DX1930 DX1930.The horizontal coordinates were scaled from a topographic map and have DX1930.an estimated accuracy of +/- 6 seconds. DX1930 DX1930.The orthometric height was determined by differential leveling DX1930.and adjusted by the National Geodetic Survey in June 1991. DX1930.WARNING-Repeat measurements at this control monument indicate possible DX1930.vertical movement. DX1930 DX1930.The geoid height was determined by GEOID03. DX1930 DX1930.The dynamic height is computed by dividing the NAVD 88 DX1930.geopotential number by the normal gravity value computed on the DX1930.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 DX1930.degrees latitude (g = 980.6199 gals.). DX1930 DX1930.The modeled gravity was interpolated from observed gravity values. DX1930 DX1930; North East Units Estimated Accuracy DX1930;SPC CA 6 - 672,170. 1,850,200. MT (+/- 180 meters Scaled) DX1930 DX1930 SUPERSEDED SURVEY CONTROL DX1930 DX1930 NGVD 29 (??/??/92) 13.372 (m) 43.87 (f) ADJ UNCH 1 1 DX1930 DX1930.Superseded values are not recommended for survey control. DX1930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DX1930.See file dsdata.txt to determine how the superseded data were derived. DX1930 DX1930_U.S. NATIONAL GRID SPATIAL ADDRESS: 11SMT197301(NAD 83) DX1930_MARKER: DD = SURVEY DISK DX1930_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN DX1930+WITH SETTING: PAVEMENT DX1930_SP_SET: CONCRETE BASE DX1930_STAMPING: LINE-403 1E-81-69 DX1930_MARK LOGO: CA-059 DX1930_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY DX1930 DX1930 HISTORY - Date Condition Report By DX1930 HISTORY - 1969 MONUMENTED CA-059 DX1930 HISTORY - 1974 GOOD CA-059 DX1930 HISTORY - 1977 GOOD NGS DX1930 HISTORY - 1988 GOOD NGS DX1930 HISTORY - 19960302 GOOD USPSQD DX1930 HISTORY - 20050824 MARK NOT FOUND GEOCAC DX1930 DX1930 STATION DESCRIPTION DX1930 DX1930'DESCRIBED BY ORANGE COUNTY CALIFORNIA 1969 DX1930'3 MI S FROM SANTA ANA. DX1930'FROM THE POST OFFICE IN SANTA ANA AT SIXTH AND BUSH STREETS, DX1930'GO ONE BLOCK WEST TO MAIN STREET, THENCE 3.0 MILES SOUTH ALONG DX1930'MAIN STREET TO ITS INTERSECTION WITH DYER ROAD, ABOUT 335 FEET DX1930'EAST ALONG THE ROAD TO NUMBER 122 EAST DYER ROAD, 30.5 FEET DX1930'SOUTH OF THE CENTER LINE OF THE ROAD, 0.5 OF A FOOT EAST OF THE DX1930'NORTHEAST CORNER OF A CONCRETE VAULT WITH STEEL INSPECTION DX1930'LIDS, 0.5 OF A FOOT NORTHWEST OF A 1 FOOT IRON VENT PIPE 10 DX1930'FEET HIGH, SET IN THE TOP OF THE NORTHWEST PART OF THE CONCRETE DX1930'BASE OF THE VENT PIPE, 0.6 OF A FOOT HIGHER THAN THE GUTTER. DX1930 DX1930 STATION RECOVERY (1974) DX1930 DX1930'RECOVERY NOTE BY ORANGE COUNTY CALIFORNIA 1974 DX1930'RECOVERED IN GOOD CONDITION. DX1930 DX1930 STATION RECOVERY (1977) DX1930 DX1930'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 DX1930'RECOVERED IN GOOD CONDITION. DX1930 DX1930 STATION RECOVERY (1988) DX1930 DX1930'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 DX1930'RECOVERED IN GOOD CONDITION. DX1930 DX1930 STATION RECOVERY (1996) DX1930 DX1930'RECOVERY NOTE BY US POWER SQUADRON 1996 DX1930'RECOVERED IN GOOD CONDITION. DX1930 DX1930 STATION RECOVERY (2005) DX1930 DX1930'RECOVERY NOTE BY GEOCACHING 2005 (JBC) DX1930'STEEL-LIDDED VAULT FOUND IN FRONT OF 122 E. DYER ROAD, BUT THERE IS NO DX1930'VENT PIPE WITHIN 300 FEET OF IT. DYER ROAD NOW EXTENDS ACROSS MAIN DX1930'STREET, AND APPEARS TO HAVE BEEN WIDENED, AS IT IS NOW ABOUT 38 FEET DX1930'FROM THE CENTER OF DYER ROAD TO THE CURB.