1 National Geodetic Survey, Retrieval Date = MARCH 10, 2012 LV0360 *********************************************************************** LV0360 TIDAL BM - This is a Tidal Bench Mark. LV0360 DESIGNATION - 941 8767 TIDAL 12 LV0360 PID - LV0360 LV0360 STATE/COUNTY- CA/HUMBOLDT LV0360 USGS QUAD - EUREKA (1972) LV0360 LV0360 *CURRENT SURVEY CONTROL LV0360 ___________________________________________________________________ LV0360* NAD 83(1986)- 40 45 59. (N) 124 13 04. (W) SCALED LV0360* NAVD 88 - 4.132 (meters) 13.56 (feet) ADJUSTED LV0360 ___________________________________________________________________ LV0360 GEOID HEIGHT- -30.90 (meters) GEOID09 LV0360 DYNAMIC HT - 4.130 (meters) 13.55 (feet) COMP LV0360 MODELED GRAV- 980,203.5 (mgal) NAVD 88 LV0360 LV0360 VERT ORDER - FIRST CLASS II LV0360 LV0360.The horizontal coordinates were scaled from a topographic map and have LV0360.an estimated accuracy of +/- 6 seconds. LV0360. LV0360.The orthometric height was determined by differential leveling and LV0360.adjusted in June 1991. LV0360 LV0360.This Tidal Bench Mark is designated as VM 1719 LV0360.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES. LV0360 LV0360.The geoid height was determined by GEOID09. LV0360 LV0360.The dynamic height is computed by dividing the NAVD 88 LV0360.geopotential number by the normal gravity value computed on the LV0360.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 LV0360.degrees latitude (g = 980.6199 gals.). LV0360 LV0360.The modeled gravity was interpolated from observed gravity values. LV0360 LV0360; North East Units Estimated Accuracy LV0360;SPC CA 1 - 661,490. 1,812,790. MT (+/- 180 meters Scaled) LV0360 LV0360 SUPERSEDED SURVEY CONTROL LV0360 LV0360 NGVD 29 (12/02/92) 3.109 (m) 10.20 (f) ADJUSTED 1 2 LV0360 LV0360.Superseded values are not recommended for survey control. LV0360.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LV0360.See file dsdata.txt to determine how the superseded data were derived. LV0360 LV0360_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL972135(NAD 83) LV0360 LV0360_MARKER: DJ = TIDAL STATION DISK LV0360_SETTING: 37 = SET IN A MASSIVE RETAINING WALL LV0360_SP_SET: SEAWALL LV0360_STAMPING: NO 12 1962 LV0360_MARK LOGO: CGS LV0360_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL LV0360 LV0360 HISTORY - Date Condition Report By LV0360 HISTORY - 1962 MONUMENTED CGS LV0360 HISTORY - 1967 GOOD CGS LV0360 HISTORY - 19880216 GOOD NGS LV0360 LV0360 STATION DESCRIPTION LV0360 LV0360'DESCRIBED BY COAST AND GEODETIC SURVEY 1967 LV0360'11.6 MI SW FROM ARCATA. LV0360'11.55 MILES SOUTHWEST ALONG SAMOA ROAD FROM THE INTERSECTION OF LV0360'H STREET AT ARCATA, AT THE COAST GUARD LIFEBOAT STATION, IN THE LV0360'TOP OF THE CONCRETE SEAWALL, 69 FEET EAST-NORTHEAST OF THE LV0360'NORTHEAST CORNER OF THE STATION BUILDING, 121 FEET NORTHEAST OF LV0360'BENCH MARK TIDAL 9, 40 FEET SOUTH OF BENCH MARK TIDAL 11. LV0360 LV0360 STATION RECOVERY (1988) LV0360 LV0360'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 LV0360'RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 19.1 KM (11.85 LV0360'MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. LV0360'HIGHWAY 101 IN ARCATA.