1 National Geodetic Survey, Retrieval Date = MARCH 10, 2012 LV0630 *********************************************************************** LV0630 TIDAL BM - This is a Tidal Bench Mark. LV0630 DESIGNATION - 941 8767 C TIDAL LV0630 PID - LV0630 LV0630 STATE/COUNTY- CA/HUMBOLDT LV0630 USGS QUAD - EUREKA (1972) LV0630 LV0630 *CURRENT SURVEY CONTROL LV0630 ___________________________________________________________________ LV0630* NAD 83(1986)- 40 46 04. (N) 124 13 07. (W) SCALED LV0630* NAVD 88 - 3.226 (meters) 10.58 (feet) ADJUSTED LV0630 ___________________________________________________________________ LV0630 GEOID HEIGHT- -30.90 (meters) GEOID09 LV0630 DYNAMIC HT - 3.224 (meters) 10.58 (feet) COMP LV0630 MODELED GRAV- 980,203.9 (mgal) NAVD 88 LV0630 LV0630 VERT ORDER - FIRST CLASS II LV0630 LV0630.The horizontal coordinates were scaled from a topographic map and have LV0630.an estimated accuracy of +/- 6 seconds. LV0630. LV0630.The orthometric height was determined by differential leveling and LV0630.adjusted in June 1991. LV0630 LV0630.This Tidal Bench Mark is designated as VM 1722 LV0630.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES. LV0630 LV0630.The geoid height was determined by GEOID09. LV0630 LV0630.The dynamic height is computed by dividing the NAVD 88 LV0630.geopotential number by the normal gravity value computed on the LV0630.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 LV0630.degrees latitude (g = 980.6199 gals.). LV0630 LV0630.The modeled gravity was interpolated from observed gravity values. LV0630 LV0630; North East Units Estimated Accuracy LV0630;SPC CA 1 - 661,650. 1,812,720. MT (+/- 180 meters Scaled) LV0630 LV0630 SUPERSEDED SURVEY CONTROL LV0630 LV0630 NGVD 29 (12/02/92) 2.202 (m) 7.22 (f) ADJUSTED 1 2 LV0630 LV0630.Superseded values are not recommended for survey control. LV0630.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LV0630.See file dsdata.txt to determine how the superseded data were derived. LV0630 LV0630_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL971136(NAD 83) LV0630 LV0630_MARKER: DJ = TIDAL STATION DISK LV0630_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) LV0630_SP_SET: STAINLESS STEEL ROD LV0630_STAMPING: 8767 C 1981 LV0630_MARK LOGO: NOS LV0630_PROJECTION: PROJECTING 10 CENTIMETERS LV0630_MAGNETIC: N = NO MAGNETIC MATERIAL LV0630_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL LV0630_ROD/PIPE-DEPTH: 12.2 meters LV0630 LV0630 HISTORY - Date Condition Report By LV0630 HISTORY - 1981 MONUMENTED NOS LV0630 HISTORY - 19880220 GOOD NGS LV0630 LV0630 STATION DESCRIPTION LV0630 LV0630'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 LV0630'19.0 KM (11.80 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE LV0630'JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, AT THE U.S. COAST GUARD LV0630'STATION, 25.2 M (82.7 FT) SOUTHWEST OF A JOG IN A FENCE, 10.6 M (34.8 LV0630'FT) NORTHWEST OF THE CENTER OF THE ROAD, 10.5 M (34.4 FT) WEST OF A LV0630'METAL STREET LIGHT POLE, 0.6 M (2.0 FT) NORTHWEST OF A FENCE, AND LV0630'LEVEL WITH THE ROAD. NOTE--THE DISK IS ENCASED IN A 5-INCH PVC PIPE.