National Geodetic Survey, Retrieval Date = NOVEMBER 8, 2004 FV1800 *********************************************************************** FV1800 DESIGNATION - MOUNT SEMAS FV1800 PID - FV1800 FV1800 STATE/COUNTY- CA/MONTEREY FV1800 USGS QUAD - WUNPOST (1979) FV1800 FV1800 *CURRENT SURVEY CONTROL FV1800 ___________________________________________________________________ FV1800* NAD 83(1992)- 35 52 57.53621(N) 120 49 18.67901(W) ADJUSTED FV1800* NAVD 88 - 371.5 (meters) 1219. (feet) VERTCON FV1800 ___________________________________________________________________ FV1800 EPOCH DATE - 1991.35 FV1800 LAPLACE CORR- 2.87 (seconds) DEFLEC99 FV1800 GEOID HEIGHT- -33.96 (meters) GEOID03 FV1800 FV1800 HORZ ORDER - FIRST FV1800 FV1800.The horizontal coordinates were established by classical geodetic methods FV1800.and adjusted by the National Geodetic Survey in June 1996. FV1800.The horizontal coordinates are valid at the epoch date displayed above. FV1800.The epoch date for horizontal control is a decimal equivalence FV1800.of Year/Month/Day. FV1800 FV1800.The NAVD 88 height was computed by applying the VERTCON shift value to FV1800.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) FV1800 FV1800.The Laplace correction was computed from DEFLEC99 derived deflections. FV1800 FV1800.The geoid height was determined by GEOID03. FV1800 FV1800; North East Units Scale Factor Converg. FV1800;SPC CA 4 - 562,514.027 1,835,497.665 MT 1.00002426 -1 05 12.8 FV1800;SPC CA 4 - 1,845,514.77 6,021,961.92 sFT 1.00002426 -1 05 12.8 FV1800;SPC CA 5 - 767,894.465 1,745,198.317 MT 1.00011720 -1 36 30.6 FV1800;SPC CA 5 - 2,519,333.76 5,725,704.81 sFT 1.00011720 -1 36 30.6 FV1800;UTM 10 - 3,973,123.761 696,616.384 MT 1.00007637 +1 16 37.5 FV1800 FV1800! - Elev Factor x Scale Factor = Combined Factor FV1800!SPC CA 4 - 0.99994702 x 1.00002426 = 0.99997128 FV1800!SPC CA 5 - 0.99994702 x 1.00011720 = 1.00006421 FV1800!UTM 10 - 0.99994702 x 1.00007637 = 1.00002338 FV1800 FV1800: Primary Azimuth Mark Grid Az FV1800:SPC CA 4 - U 154 153 23 25.4 FV1800:SPC CA 5 - U 154 153 54 43.2 FV1800:UTM 10 - U 154 151 01 35.1 FV1800 FV1800|---------------------------------------------------------------------| FV1800| PID Reference Object Distance Geod. Az | FV1800| dddmmss.s | FV1800| DA7303 MOUNT SEMAS RM 1 11.066 METERS 03424 | FV1800| FV0215 U 154 APPROX. 1.5 KM 1521812.6 | FV1800| FV1799 LOS ANGELES SAN FRAN AWY BN 20 11.359 METERS 26801 | FV1800| DA7304 MOUNT SEMAS RM 2 23.365 METERS 27421 | FV1800| FV1816 MT WILLIAMS RADAR SCREEN APPROX.17.9 KM 2951328.9 | FV1800| FV1815 MT WILLIAMS LOOKOUT HOUSE APPROX.17.9 KM 2951832.8 | FV1800|---------------------------------------------------------------------| FV1800 FV1800 SUPERSEDED SURVEY CONTROL FV1800 FV1800 NAD 83(1992)- 35 52 57.53636(N) 120 49 18.67938(W) AD(1991.35) 1 FV1800 NAD 83(1986)- 35 52 57.52987(N) 120 49 18.67416(W) AD(1984.00) 1 FV1800 NAD 27 - 35 52 57.65000(N) 120 49 15.02900(W) AD( ) 1 FV1800 NGVD 29 (07/19/86) 370.6 (m) 1216. (f) VERT ANG FV1800 FV1800.Superseded values are not recommended for survey control. FV1800.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. FV1800.See file dsdata.txt to determine how the superseded data were derived. FV1800 FV1800_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SFE9661673124(NAD 83) FV1800_MARKER: Z = SEE DESCRIPTION FV1800_SETTING: 0 = UNSPECIFIED SETTING FV1800 FV1800 HISTORY - Date Condition Report By FV1800 HISTORY - 1944 MONUMENTED CGS FV1800 HISTORY - 1963 SEE DESCRIPTION CGS FV1800 HISTORY - 1964 SEE DESCRIPTION CADH FV1800 HISTORY - 1973 SEE DESCRIPTION NGS FV1800 HISTORY - 1975 SEE DESCRIPTION NGS FV1800 FV1800 STATION DESCRIPTION FV1800 FV1800'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (JCS) FV1800'STATION IS LOCATED ABOUT 2.0 MILES NW OF THE TOWN OF BRADLEY FV1800'ON THE HIGHEST POINT OF MT. SEMAS, 37.21 FEET E OF THE CENTER FV1800'OF AN AIRWAY BEACON, AND 75.95 FEET E BY N OF THE SE CORNER FV1800'OF A LOOKOUT TOWER. FV1800' FV1800'STATION MARK IS A BRONZE STATION DISK WELDED TO THE TOP OF FV1800'A 2-1/2-INCH SOIL PIPE. IT IS STAMPED MT SEMAS 1944 AND PROJECTS FV1800'ABOUT 3 INCHES. FV1800' FV1800'REFERENCE MARK 1 IS A BRONZE REFERENCE DISK WELDED TO THE FV1800'TOP OF A 2-1/2-INCH SOIL PIPE. IT IS STAMPED MT SEMAS NO 1 FV1800'1944 AND PROJECTS ABOUT 3 INCHES. FV1800' FV1800'REFERENCE MARK 2 IS A BRONZE REFERENCE DISK SET IN A DRILL FV1800'HOLE OF A 2- BY 2-FOOT CONCRETE BLOCK THAT IS FLUSH WITH THE FV1800'GROUND. IT IS STAMPED MT SEMAS NO 2 1944. FV1800' FV1800'AZIMUTH MARK IS A BRONZE BENCH-MARK DISK SET IN THE TOP OF FV1800'A 12-INCH CONCRETE POST. IT IS 4-1/2 FEET E OF A TELEGRAPH FV1800'POLE WITH A RAILROAD MILEAGE SIGN 195 AND 3 FEET E OF THE FV1800'RAILROAD RIGHT-OF-WAY FENCE. IT IS STAMPED U 154 1933 AND FV1800'PROJECTS ABOUT 4 INCHES. FV1800' FV1800'TO REACH THE STATION FROM THE CENTER OF THE TOWN OF BRADLEY, FV1800'GO SE ON U.S. HIGHWAY 101 FOR 0.2 MILE, THEN LEFT, CROSS THE FV1800'RAILROAD TRACKS JUST E OF A MUD PLANT. THEN LEFT (NW) ON FV1800'A DIM FIELD ROAD PARALLEL TO THE RAILROAD TRACKS FOR 1.0 MILE FV1800'TO THE AZIMUTH MARK ON THE LEFT. CONTINUE FOR 0.5 MILE TO FV1800'A DEEP WASH. THEN TURN RIGHT AND FOLLOW A SHELF ROAD FOR FV1800'0.55 MILE. THEN LEFT FOR 0.9 MILE TO THE TOP OF MT. SEMAS FV1800'AND THE STATION. IMPOSSIBLE TO DRIVE TO IN WET WEATHER. FV1800' FV1800'THE LOOKOUT TOWER IS A WOODEN BUILDING CONSTRUCTED OF BROWN FV1800'SHINGLES. IT IS 12 BY 20 FEET AND IS ABOUT 20 FEET HIGH. FV1800'THERE IS A CROWS-NEST ON THE SW END OF THE ROOF THAT HAS FV1800'WINDOWS ON ALL SIDES. FV1800' FV1800'THE AIRWAY BEACON IS CONSTRUCTED OF STEEL, APPROXIMATELY 60 FV1800'FEET HIGH, AND IS PAINTED ORANGE AND WHITE. THERE IS A CATWALK FV1800'AT THE TOP OF THE STRUCTURE. FV1800' FV1800'HEIGHT OF LIGHT ABOVE STATION MARK - 1 METER. FV1800 FV1800 STATION RECOVERY (1963) FV1800 FV1800'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (CAA) FV1800'THE STATION MARK WAS FOUND BROKE OFF ABOUT 6 INCHES BELOW THE FV1800'GROUND SURFACE. A NEW PIPE MARK WAS ESTABLISHED BY INTERSECTING FV1800'THE MEASUREMENTS FROM THE REFERENCE MARKS. THE STATION MARK FV1800'IS A STANDARD DISK STAMPED MT SEMAS 1944 1963, BRAZED TO THE FV1800'TOP OF A 2-1/2 INCH SOIL PIPE WHICH PROJECTS 1 INCH ABOVE FV1800'THE GROUND SURFACE. FV1800' FV1800'REFERENCE MARKS 1 AND 2 WERE RECOVERED AS DESCRIBED AND FOUND FV1800'STABLE AT THIS TIME. FV1800' FV1800'BM U 154 (AZIMUTH MARK) WAS RECOVERED AS DESCRIBED AND FOUND FV1800'TO BE STABLE AT THIS TIME. FV1800' FV1800'THE LOOKOUT TOWER THAT WAS LOCATED AT THE STATION SITE IS GONE. FV1800' FV1800'THE DESCRIPTION TO REACH THE STATION IS ADEQUATE. FV1800 FV1800 STATION RECOVERY (1964) FV1800 FV1800'RECOVERY NOTE BY CA DIV OF HIGHWAYS 1964 (JAC) FV1800'MT SEMAS 1944 1963-VERY GOOD-SMALL HOLE IS DRILLED IN DISC. FV1800'0.03 N.W. OF TRIANGULATION STATION FV1800' FV1800'MT SEMAS NO 1 1944-GOOD FV1800' FV1800'MT SEMAS NO 2 1944-GOOD FV1800' FV1800'U 154 1933 (AZ. MRK.)-SLIGHT CRACKS IN CONCRETE FV1800' FV1800'TO REACH THE STATION FROM THE CENTER OF THE TOWN OF BRADLEY, GO FV1800'S.E. ON U.S. HWY. 101 FOR 0.2 MI., THEN LEFT ON SARGANTS FV1800'RD. FOR 0.25 MI. CROSSING RR TRACKS AND CATTLE GUARD. THEN FV1800'LEFT ON DIRT ROAD FOR 1.1 MI. PARALLEL R.R. TRACKS AND PROPERTY FV1800'FENCE TO THE AZIMUTH MARK ON LEFT, CONTINUE ALONG ROAD 0.4 MI. FV1800'TO FORK, PROCEED RIGHT 0.1 MI. TO THE SECOND FORK, PROCEED FV1800'RIGHT 0.5 MI. TO THE THIRD FORK, PROCEED LEFT 0.6 MI. TO THE FV1800'FOURTH FORK, PROCEED LEFT 0.3 MI. TO TOP OF MT. SEMAS AND FV1800'STATION. ROAD IS IN VERY GOOD CONDITION. FV1800 FV1800 STATION RECOVERY (1973) FV1800 FV1800'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LDK) FV1800'RECOVERED THE STATION MARK, AZIMUTH MARK AND REFERENCE MARKS FV1800'1 AND 2 IN GOOD CONDITION AS DESCRIBED. FV1800' FV1800'HEIGHT OF LIGHT ABOVE STATION MARK 6.14 FEET. FV1800' FV1800'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2 MI. NW FV1800'OF BRADLEY FV1800 FV1800 STATION RECOVERY (1975) FV1800 FV1800'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN) FV1800'THE STATION MARK, AZIMUTH MARK (BM U 154) AND REFERENCE MARKS FV1800'1 AND 2 WERE RECOVERED IN GOOD CONDITION AND THE PREVIOUS FV1800'DESCRIPTIONS ARE ADEQUATE. FV1800' FV1800'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2 MILES NORTHWEST FV1800'OF BRADLEY