HV0046 ***********************************************************************
HV0046  DESIGNATION -  EASTON BM 1935
HV0046  PID         -  HV0046
HV0046  STATE/COUNTY-  MD/TALBOT
HV0046  USGS QUAD   -  EASTON (1974)
HV0046
HV0046                         *CURRENT SURVEY CONTROL
HV0046  ___________________________________________________________________
HV0046* NAD 83(1986)-  38 45 52.     (N)    076 04 20.     (W)     SCALED
HV0046* NAVD 88     -        10.554  (meters)      34.63   (feet)  ADJUSTED
HV0046  ___________________________________________________________________
HV0046  GEOID HEIGHT-         -34.67  (meters)                     GEOID99
HV0046  DYNAMIC HT  -          10.547 (meters)      34.60  (feet)  COMP
HV0046  MODELED GRAV-     980,035.3   (mgal)                       NAVD 88
HV0046
HV0046  VERT ORDER  -  FIRST     CLASS II
HV0046
HV0046.The horizontal coordinates were scaled from a topographic map and have
HV0046.an estimated accuracy of +/- 6 seconds.
HV0046
HV0046.The orthometric height was determined by differential leveling
HV0046.and adjusted by the National Geodetic Survey in June 1991.
HV0046
HV0046.The geoid height was determined by GEOID99.
HV0046
HV0046.The dynamic height is computed by dividing the NAVD 88
HV0046.geopotential number by the normal gravity value computed on the
HV0046.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
HV0046.degrees latitude (g = 980.6199 gals.).
HV0046
HV0046.The modeled gravity was interpolated from observed gravity values.
HV0046
HV0046;                    North         East    Units  Estimated Accuracy
HV0046;SPC MD       -   122,270.      480,630.      MT  (+/- 180 meters Scaled)
HV0046
HV0046                          SUPERSEDED SURVEY CONTROL
HV0046
HV0046  NGVD 29     -        10.792  (m)           35.41   (f) ADJUSTED    1 2
HV0046
HV0046.Superseded values are not recommended for survey control.
HV0046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
HV0046.See file dsdata.txt to determine how the superseded data were derived.
HV0046
HV0046_MARKER: DB = BENCH MARK DISK
HV0046_SETTING: 30 = CONCRETE BASE
HV0046_STAMPING: EASTON 1935
HV0046_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
HV0046
HV0046  HISTORY     - Date     Condition        Recov. By
HV0046  HISTORY     - 1935     MONUMENTED       CGS
HV0046  HISTORY     - 1971     GOOD             NGS
HV0046
HV0046                          STATION DESCRIPTION
HV0046
HV0046''DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
HV0046''0.8 MI S FROM EASTON.
HV0046''ABOUT 0.8 MILE SOUTH ALONG WASHINGTON STREET FROM THE COURTHOUSE
HV0046''AT EASTON, AT THE EASTON HIGH SCHOOL, SET IN THE TOP AND AT THE
HV0046''NORTHEAST CORNER OF THE CONCRETE BASE SUPPORTING THE FLAGPOLE,
HV0046''167 FEET EAST OF THE CENTER LINE OF WASHINGTON STREET, 109.5
HV0046''FEET SOUTH OF THE SOUTHWEST CORNER OF THE SCHOOL BUILDING, 2.9
HV0046''FEET ABOVE THE LEVEL OF THE GROUND AND ABOUT 3 FEET ABOVE THE
HV0046''LEVEL OF THE STREET.