JV3199 ***********************************************************************
JV3199  DESIGNATION -  A
JV3199  PID         -  JV3199
JV3199  STATE/COUNTY-  MD/WASHINGTON
JV3199  USGS QUAD   -  HAGERSTOWN (1985)
JV3199
JV3199                         *CURRENT SURVEY CONTROL
JV3199  ___________________________________________________________________
JV3199* NAD 83(1986)-  39 38 34.     (N)    077 43 19.     (W)     SCALED
JV3199* NAVD 88     -       168.121  (meters)     551.58   (feet)  ADJUSTED
JV3199  ___________________________________________________________________
JV3199  GEOID HEIGHT-         -34.12  (meters)                     GEOID99
JV3199  DYNAMIC HT  -         168.022 (meters)     551.25  (feet)  COMP
JV3199  MODELED GRAV-     980,033.9   (mgal)                       NAVD 88
JV3199
JV3199  VERT ORDER  -  FIRST     CLASS II
JV3199
JV3199.The horizontal coordinates were scaled from a topographic map and have
JV3199.an estimated accuracy of +/- 6 seconds.
JV3199
JV3199.The orthometric height was determined by differential leveling
JV3199.and adjusted by the National Geodetic Survey in June 1991.
JV3199
JV3199.The geoid height was determined by GEOID99.
JV3199
JV3199.The dynamic height is computed by dividing the NAVD 88
JV3199.geopotential number by the normal gravity value computed on the
JV3199.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
JV3199.degrees latitude (g = 980.6199 gals.).
JV3199
JV3199.The modeled gravity was interpolated from observed gravity values.
JV3199
JV3199;                    North         East    Units  Estimated Accuracy
JV3199;SPC MD       -   219,610.      338,030.      MT  (+/- 180 meters Scaled)
JV3199
JV3199                          SUPERSEDED SURVEY CONTROL
JV3199
JV3199  NGVD 29     -       168.326  (m)          552.25   (f) ADJUSTED    1 2
JV3199
JV3199.Superseded values are not recommended for survey control.
JV3199.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
JV3199.See file dsdata.txt to determine how the superseded data were derived.
JV3199
JV3199_STAMPING: A BM USCS OCT 1877
JV3199_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
JV3199
JV3199  HISTORY     - Date     Condition        Recov. By
JV3199  HISTORY     - 1877     MONUMENTED       CGS
JV3199  HISTORY     - 1975     GOOD             NGS
JV3199  HISTORY     - 1979     GOOD             NGS
JV3199  HISTORY     - 1986     GOOD             USPSQD
JV3199
JV3199                          STATION DESCRIPTION
JV3199
JV3199''DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
JV3199''AT HAGERSTOWN.
JV3199''CUT ON THE WATER TABLE (RED SAND STONE) OF THE WASHINGTON COUNTY
JV3199''COURTHOUSE WHICH STANDS AT THE INTERSECTION OF WASHINGTON STREET &
JV3199''SUMMIT AVE. APPROXIMATELY 12 METERS SOUTH OF THE NORTHWEST CORNER OF
JV3199''THE BUILDING, ON THE WEST SIDE OF THE BUILDING (FACING SUMMIT AVE.)
JV3199''MARK IS A SQUARE CUT ON THE HORIZONTAL FACE OF THE WATER TABLE:
JV3199''LETTERS "U.S.C.S." AND "OCT. 1877" ARE CUT ON VERTICAL STONE FACE
JV3199''IMMEDIATELY BELOW THE BENCH MARK.
JV3199
JV3199                          STATION RECOVERY (1979)
JV3199
JV3199''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
JV3199''RECOVERED IN GOOD CONDITION.
JV3199
JV3199                          STATION RECOVERY (1986)
JV3199
JV3199''RECOVERY NOTE BY US POWER SQUADRON 1986 (WPG)
JV3199''RECOVERED IN GOOD CONDITION.