HV0318 ***********************************************************************
HV0318  DESIGNATION -  Y 134
HV0318  PID         -  HV0318
HV0318  STATE/COUNTY-  MD/ST MARYS
HV0318  USGS QUAD   -  SOLOMONS ISLAND (1987)
HV0318
HV0318                         *CURRENT SURVEY CONTROL
HV0318  ___________________________________________________________________
HV0318* NAD 83(1986)-  38 15 44.     (N)    076 27 40.     (W)     SCALED
HV0318* NAVD 88     -        27.441  (meters)      90.03   (feet)  ADJUSTED
HV0318  ___________________________________________________________________
HV0318  GEOID HEIGHT-         -34.42  (meters)                     GEOID99
HV0318  DYNAMIC HT  -          27.424 (meters)      89.97  (feet)  COMP
HV0318  MODELED GRAV-     980,009.8   (mgal)                       NAVD 88
HV0318
HV0318  VERT ORDER  -  FIRST     CLASS II
HV0318
HV0318.The horizontal coordinates were scaled from a topographic map and have
HV0318.an estimated accuracy of +/- 6 seconds.
HV0318
HV0318.The orthometric height was determined by differential leveling
HV0318.and adjusted by the National Geodetic Survey in June 1991.
HV0318
HV0318.The geoid height was determined by GEOID99.
HV0318
HV0318.The dynamic height is computed by dividing the NAVD 88
HV0318.geopotential number by the normal gravity value computed on the
HV0318.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
HV0318.degrees latitude (g = 980.6199 gals.).
HV0318
HV0318.The modeled gravity was interpolated from observed gravity values.
HV0318
HV0318;                    North         East    Units  Estimated Accuracy
HV0318;SPC MD       -    66,250.      447,160.      MT  (+/- 180 meters Scaled)
HV0318
HV0318                          SUPERSEDED SURVEY CONTROL
HV0318
HV0318  NGVD 29     -        27.696  (m)           90.87   (f) ADJUSTED    1 2
HV0318
HV0318.Superseded values are not recommended for survey control.
HV0318.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
HV0318.See file dsdata.txt to determine how the superseded data were derived.
HV0318
HV0318_MARKER: DB = BENCH MARK DISK
HV0318_SETTING: 34 = BUILDING
HV0318_STAMPING: Y 134 1971
HV0318_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
HV0318+STABILITY: SURFACE MOTION
HV0318_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
HV0318+SATELLITE: SATELLITE OBSERVATIONS - January 03, 1991
HV0318
HV0318  HISTORY     - Date     Condition        Recov. By
HV0318  HISTORY     - 1971     MONUMENTED       NGS
HV0318  HISTORY     - 19910103 GOOD             NGS
HV0318
HV0318                          STATION DESCRIPTION
HV0318
HV0318''DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
HV0318''0.6 MI SW FROM LEXINGTON PARK.
HV0318''ABOUT 0.6 MILE SOUTHWEST ALONG STATE HIGHWAY 246 FROM THE JUNCTION
HV0318''OF STATE HIGHWAY 235 AT LEXINGTON PARK, SET VERTICALLY IN THE
HV0318''SOUTHEAST FACE AT THE EAST CORNER OF THE ESSEX DRIVE PUMPING
HV0318''STATION, 190 FEET SOUTHWEST OF THE CENTER LINE OF ESSEX DRIVE,
HV0318''75.4 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY AND 2.1 FEET
HV0318''ABOVE THE LEVEL OF THE GROUND.
HV0318
HV0318                          STATION RECOVERY (1991)
HV0318
HV0318''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
HV0318''0.9 KM (0.6 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 146 FROM THE
HV0318''JUNCTION OF STATE HIGHWAY 235 IN LEXINGTON PARK, SET VERTICALLY IN
HV0318''THE SOUTH FACE OF THE ESSIX DRIVE WASTEWATER PUMP STATION NUMBER 4
HV0318''BUILDING, 57.9 M (190.0 FT) SOUTHWEST OF THE CENTERLINE OF THE DRIVE,
HV0318''23.0 M (75.5 FT) NORTHWEST OF THE HIGHWAY CENTERLINE, 0.6 M (2.0 FT)
HV0318''ABOVE THE GROUND SURFACE, AND 0.3 M (1.0 FT) WEST OF THE SOUTHEAST
HV0318''CORNER OF THE BUILDING.