1 National Geodetic Survey, Retrieval Date = MARCH 10, 2012 LV0631 *********************************************************************** LV0631 TIDAL BM - This is a Tidal Bench Mark. LV0631 DESIGNATION - 941 8767 D TIDAL LV0631 PID - LV0631 LV0631 STATE/COUNTY- CA/HUMBOLDT LV0631 USGS QUAD - EUREKA (1972) LV0631 LV0631 *CURRENT SURVEY CONTROL LV0631 ___________________________________________________________________ LV0631* NAD 83(1986)- 40 46 06. (N) 124 13 05. (W) SCALED LV0631* NAVD 88 - 3.622 (meters) 11.88 (feet) ADJUSTED LV0631 ___________________________________________________________________ LV0631 GEOID HEIGHT- -30.90 (meters) GEOID09 LV0631 DYNAMIC HT - 3.620 (meters) 11.88 (feet) COMP LV0631 MODELED GRAV- 980,204.1 (mgal) NAVD 88 LV0631 LV0631 VERT ORDER - FIRST CLASS II LV0631 LV0631.The horizontal coordinates were scaled from a topographic map and have LV0631.an estimated accuracy of +/- 6 seconds. LV0631. LV0631.The orthometric height was determined by differential leveling and LV0631.adjusted in June 1991. LV0631 LV0631.This Tidal Bench Mark is designated as VM 1723 LV0631.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES. LV0631 LV0631.The geoid height was determined by GEOID09. LV0631 LV0631.The dynamic height is computed by dividing the NAVD 88 LV0631.geopotential number by the normal gravity value computed on the LV0631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 LV0631.degrees latitude (g = 980.6199 gals.). LV0631 LV0631.The modeled gravity was interpolated from observed gravity values. LV0631 LV0631; North East Units Estimated Accuracy LV0631;SPC CA 1 - 661,710. 1,812,770. MT (+/- 180 meters Scaled) LV0631 LV0631 SUPERSEDED SURVEY CONTROL LV0631 LV0631 NGVD 29 (12/02/92) 2.599 (m) 8.53 (f) ADJUSTED 1 2 LV0631 LV0631.Superseded values are not recommended for survey control. LV0631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LV0631.See file dsdata.txt to determine how the superseded data were derived. LV0631 LV0631_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL972137(NAD 83) LV0631 LV0631_MARKER: DJ = TIDAL STATION DISK LV0631_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) LV0631_SP_SET: STAINLESS STEEL ROD LV0631_STAMPING: 8767 D 1981 LV0631_MARK LOGO: NOS LV0631_PROJECTION: PROJECTING 10 CENTIMETERS LV0631_MAGNETIC: N = NO MAGNETIC MATERIAL LV0631_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL LV0631_ROD/PIPE-DEPTH: 14.6 meters LV0631 LV0631 HISTORY - Date Condition Report By LV0631 HISTORY - 1981 MONUMENTED NOS LV0631 HISTORY - 19880220 GOOD NGS LV0631 LV0631 STATION DESCRIPTION LV0631 LV0631'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 LV0631'18.9 KM (11.75 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE LV0631'JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, AT THE U.S. COAST GUARD LV0631'STATION, 16.5 M (54.1 FT) NORTHWEST OF THE NORTH CORNER OF THE MOST LV0631'NORTHEASTERLY ONE OF THREE APARTMENT COMPLEXS, 8.3 M (27.2 FT) LV0631'EAST-SOUTHEAST OF THE CENTER OF THE ENTRANCE ROAD, 3.7 M (12.1 FT) LV0631'EAST OF A METAL STREET LIGHT POLE, AND LEVEL WITH THE ROAD. LV0631'NOTE--THE DISK IS 0.22 M (0.7 FT) BELOW THE GROUND SURFACE AND IS LV0631'ENCASED IN A 5-INCH PVC PIPE.