1 National Geodetic Survey, Retrieval Date = MARCH 10, 2012 LV0632 *********************************************************************** LV0632 TIDAL BM - This is a Tidal Bench Mark. LV0632 DESIGNATION - 941 8767 B TIDAL LV0632 PID - LV0632 LV0632 STATE/COUNTY- CA/HUMBOLDT LV0632 USGS QUAD - EUREKA (1972) LV0632 LV0632 *CURRENT SURVEY CONTROL LV0632 ___________________________________________________________________ LV0632* NAD 83(1986)- 40 46 04.34 (N) 124 13 01.88 (W) HD_HELD1 LV0632* NAVD 88 - 3.167 (meters) 10.39 (feet) ADJUSTED LV0632 ___________________________________________________________________ LV0632 GEOID HEIGHT- -30.90 (meters) GEOID09 LV0632 DYNAMIC HT - 3.166 (meters) 10.39 (feet) COMP LV0632 MODELED GRAV- 980,204.0 (mgal) NAVD 88 LV0632 LV0632 VERT ORDER - FIRST CLASS II LV0632 LV0632.The horizontal coordinates were established by differentially corrected LV0632.hand held GPS obs and have an estimated accuracy of +/- 3 meters. LV0632. LV0632.The orthometric height was determined by differential leveling and LV0632.adjusted in June 1991. LV0632 LV0632.This Tidal Bench Mark is designated as VM 1721 LV0632.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES. LV0632 LV0632.The geoid height was determined by GEOID09. LV0632 LV0632.The dynamic height is computed by dividing the NAVD 88 LV0632.geopotential number by the normal gravity value computed on the LV0632.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 LV0632.degrees latitude (g = 980.6199 gals.). LV0632 LV0632.The modeled gravity was interpolated from observed gravity values. LV0632 LV0632; North East Units Estimated Accuracy LV0632;SPC CA 1 - 661,655.0 1,812,843.1 MT (+/- 3 meters HH1 GPS) LV0632 LV0632 SUPERSEDED SURVEY CONTROL LV0632 LV0632 NGVD 29 (12/02/92) 2.144 (m) 7.03 (f) ADJUSTED 1 2 LV0632 LV0632.Superseded values are not recommended for survey control. LV0632.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LV0632.See file dsdata.txt to determine how the superseded data were derived. LV0632 LV0632_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL9727313701(NAD 83) LV0632 LV0632_MARKER: DJ = TIDAL STATION DISK LV0632_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) LV0632_SP_SET: STAINLESS STEEL ROD LV0632_STAMPING: 8767 B 1981 LV0632_MARK LOGO: NOS LV0632_PROJECTION: PROJECTING 20 CENTIMETERS LV0632_MAGNETIC: N = NO MAGNETIC MATERIAL LV0632_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL LV0632_ROD/PIPE-DEPTH: 14.6 meters LV0632 LV0632 HISTORY - Date Condition Report By LV0632 HISTORY - 1981 MONUMENTED NOS LV0632 HISTORY - UNK SEE DESCRIPTION LV0632 HISTORY - 19880216 GOOD NGS LV0632 LV0632 STATION DESCRIPTION LV0632 LV0632'DESCRIBED UNK LV0632' LV0632 LV0632 STATION RECOVERY (1988) LV0632 LV0632'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 LV0632'18.9 KM (11.75 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE LV0632'JUNCTION OF U.S. HIGHWAY 101 IN ARCATA, AT THE U.S. COAST GUARD LV0632'STATION, 86.0 M (282.2 FT) SOUTHEAST OF THE CENTER OF THE ROAD, 16.1 LV0632'M (52.8 FT) EAST OF THE EAST CORNER OF THE MOST SOUTHEASTERLY 1 OF 3 LV0632'APARTMENT COMPLEXS, 12.0 M (39.4 FT) NORTHEAST OF A FIRE HYDRANT, 1.1 LV0632'M (3.6 FT) NORTH OF A WITNESS POST, 0.4 M (1.3 FT) WEST OF A WITNESS LV0632'POST, AND LEVEL WITH THE ROAD. NOTE--THE DISK IS 0.3 M (1.0 FT) LV0632'BELOW THE GROUND SURFACE AND IS ENCASED IN A 5-INCH PVC PIPE.