1 National Geodetic Survey, Retrieval Date = MARCH 10, 2012 LV0633 *********************************************************************** LV0633 TIDAL BM - This is a Tidal Bench Mark. LV0633 DESIGNATION - 941 8767 G TIDAL LV0633 PID - LV0633 LV0633 STATE/COUNTY- CA/HUMBOLDT LV0633 USGS QUAD - EUREKA (1972) LV0633 LV0633 *CURRENT SURVEY CONTROL LV0633 ___________________________________________________________________ LV0633* NAD 83(1986)- 40 46 01. (N) 124 13 04. (W) SCALED LV0633* NAVD 88 - 4.184 (meters) 13.73 (feet) ADJUSTED LV0633 ___________________________________________________________________ LV0633 GEOID HEIGHT- -30.90 (meters) GEOID09 LV0633 DYNAMIC HT - 4.182 (meters) 13.72 (feet) COMP LV0633 MODELED GRAV- 980,203.7 (mgal) NAVD 88 LV0633 LV0633 VERT ORDER - FIRST CLASS II LV0633 LV0633.The horizontal coordinates were scaled from a topographic map and have LV0633.an estimated accuracy of +/- 6 seconds. LV0633. LV0633.The orthometric height was determined by differential leveling and LV0633.adjusted in June 1991. LV0633 LV0633.This Tidal Bench Mark is designated as VM 1726 LV0633.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES. LV0633 LV0633.The geoid height was determined by GEOID09. LV0633 LV0633.The dynamic height is computed by dividing the NAVD 88 LV0633.geopotential number by the normal gravity value computed on the LV0633.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 LV0633.degrees latitude (g = 980.6199 gals.). LV0633 LV0633.The modeled gravity was interpolated from observed gravity values. LV0633 LV0633; North East Units Estimated Accuracy LV0633;SPC CA 1 - 661,550. 1,812,790. MT (+/- 180 meters Scaled) LV0633 LV0633 SUPERSEDED SURVEY CONTROL LV0633 LV0633 NGVD 29 (12/02/92) 3.161 (m) 10.37 (f) ADJUSTED 1 2 LV0633 LV0633.Superseded values are not recommended for survey control. LV0633.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LV0633.See file dsdata.txt to determine how the superseded data were derived. LV0633 LV0633_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL972135(NAD 83) LV0633 LV0633_MARKER: DJ = TIDAL STATION DISK LV0633_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES LV0633_SP_SET: FOUNDATION LV0633_STAMPING: 8767 G 1987 LV0633_MARK LOGO: NOS LV0633_MAGNETIC: N = NO MAGNETIC MATERIAL LV0633_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO LV0633+STABILITY: SURFACE MOTION LV0633 LV0633 HISTORY - Date Condition Report By LV0633 HISTORY - 1987 MONUMENTED NOS LV0633 HISTORY - 19880220 GOOD NGS LV0633 LV0633 STATION DESCRIPTION LV0633 LV0633'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 LV0633'19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE LV0633'JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, IN TOP OF THE NORTH CORNER LV0633'OF A 4.5 BY 5.5 FOOT CONCRETE BOX HOUSING VALVE CONTROLS FOR A WASTE LV0633'TANK, 40.3 M (132.2 FT) EAST-NORTHEAST OF THE EAST CORNER OF THE U.S. LV0633'COAST GUARD STATION, 13.5 M (44.3 FT) SOUTHEAST OF THE SOUTHEAST EDGE LV0633'OF A CONCRETE SIDEWALK, 11.7 M (38.4 FT) NORTHWEST OF THE NORTHEAST LV0633'END OF A SEAWALL, AND 0.1 M (0.3 FT) ABOVE THE LEVEL OF THE GROUND.