National Geodetic Survey, Retrieval Date = SEPTEMBER 23, 2002 MX1231 *********************************************************************** MX1231 DESIGNATION - SCHOOLHOUSE PEAK LOOKOUT MX1231 PID - MX1231 MX1231 STATE/COUNTY- CA/HUMBOLDT MX1231 USGS QUAD - BALD HILLS (1982) MX1231 MX1231 *CURRENT SURVEY CONTROL MX1231 ___________________________________________________________________ MX1231* NAD 83(1992)- 41 09 05.10366(N) 123 52 58.73641(W) ADJUSTED MX1231* NAVD 88 - MX1231 ___________________________________________________________________ MX1231 EPOCH DATE - 1991.35 MX1231 LAPLACE CORR- 10.93 (seconds) DEFLEC99 MX1231 GEOID HEIGHT- -28.51 (meters) GEOID99 MX1231 MX1231 HORZ ORDER - THIRD MX1231 MX1231.The horizontal coordinates were established by classical geodetic methods MX1231.and adjusted by the National Geodetic Survey in March 1994. MX1231.The horizontal coordinates are valid at the epoch date displayed above. MX1231.The epoch date for horizontal control is a decimal equivalence MX1231.of Year/Month/Day. MX1231 MX1231 MX1231.The Laplace correction was computed from DEFLEC99 derived deflections. MX1231 MX1231.The geoid height was determined by GEOID99. MX1231 MX1231; North East Units Scale Converg. MX1231;SPC CA 1 - 703,574.762 1,841,964.460 MT 0.99990984 -1 13 52.5 MX1231;SPC CA 1 - 2,308,311.53 6,043,178.40 sFT 0.99990984 -1 13 52.5 MX1231;UTM 10 - 4,555,941.781 425,909.640 MT 0.99966756 -0 34 51.9 MX1231 MX1231 SUPERSEDED SURVEY CONTROL MX1231 MX1231 NAD 83(1986)- 41 09 05.09628(N) 123 52 58.76041(W) AD(1984.00) 4 MX1231 NAD 27 - 41 09 05.64200(N) 123 52 54.52600(W) AD( ) 3 MX1231 MX1231.Superseded values are not recommended for survey control. MX1231.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. MX1231.See file dsdata.txt to determine how the superseded data were derived. MX1231 MX1231 HISTORY - Date Condition Report By MX1231 HISTORY - 1942 MONUMENTED CGS MX1231 MX1231 STATION DESCRIPTION MX1231 MX1231'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (JCS) MX1231'SCHOOLHOUSE PEAK LOOKOUT IS LOCATED ON THE SOUTH END OF MX1231'SCHOOLHOUSE PEAK, A BARE PASTURE HILL, AND IS THE HIGHEST MX1231'POINT OF THE BALD HILLS RIDGE, LYING ABOUT 12 MILES SE OF ORICK, MX1231'9 MILES SW OF WEITCHPEC, AND ABOUT 300 YARDS SOUTH OF MX1231'TRIANGULATION STATION SCHOOLHOUSE PEAK, USGS, 1941. MX1231' MX1231'THE LOOKOUT IS A WOODEN STRUCTURE, ABOUT 30 FEET HIGH, AND MX1231'ABOUT 18 FEET SQUARE WITH GLASS WINDOWS ALL AROUND. THE MX1231'ROOF OF THE BUILDING TERMINATES IN A SHARP ACUTE POINT. THE MX1231'LOOKOUT CAN BE REACHED WITH A TRUCK AND ABOUT 1/2 MILE FROM THE MX1231'MAIN TRAVELED ROAD THROUGH THIS SECTION OF THE COUNTRY. THIS MX1231'LOOKOUT WAS BEING COMPLETED AT THE TIME THAT TRIANGULATION MX1231'STATION SCHOOLHOUSE PEAK USGS 1941 WAS OCCUPIED.