JW1714 ***********************************************************************
JW1714  DESIGNATION -  SHA 220
JW1714  PID         -  JW1714
JW1714  STATE/COUNTY-  MD/GARRETT
JW1714  USGS QUAD   -  GRANTSVILLE (1994)
JW1714
JW1714                         *CURRENT SURVEY CONTROL
JW1714  ___________________________________________________________________
JW1714* NAD 83(1986)-  39 41 38.     (N)    079 11 04.     (W)     SCALED
JW1714* NAVD 88     -       720.676  (meters)    2364.42   (feet)  ADJUSTED
JW1714  ___________________________________________________________________
JW1714  GEOID HEIGHT-         -31.50  (meters)                     GEOID99
JW1714  DYNAMIC HT  -         720.206 (meters)    2362.88  (feet)  COMP
JW1714  MODELED GRAV-     979,949.3   (mgal)                       NAVD 88
JW1714
JW1714  VERT ORDER  -  SECOND    CLASS I
JW1714
JW1714.The horizontal coordinates were scaled from a topographic map and have
JW1714.an estimated accuracy of +/- 6 seconds.
JW1714
JW1714.The orthometric height was determined by differential leveling
JW1714.and adjusted by the National Geodetic Survey in April 1995.
JW1714
JW1714.The geoid height was determined by GEOID99.
JW1714
JW1714.The dynamic height is computed by dividing the NAVD 88
JW1714.geopotential number by the normal gravity value computed on the
JW1714.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
JW1714.degrees latitude (g = 980.6199 gals.).
JW1714
JW1714.The modeled gravity was interpolated from observed gravity values.
JW1714
JW1714;                    North         East    Units  Estimated Accuracy
JW1714;SPC MD       -   227,280.      212,640.      MT  (+/- 180 meters Scaled)
JW1714
JW1714                          SUPERSEDED SURVEY CONTROL
JW1714
JW1714.No superseded survey control is available for this station.
JW1714
JW1714_MARKER: DD = SURVEY DISK
JW1714_SETTING: 66 = SET IN ROCK OUTCROP
JW1714_STAMPING: SHA 220 1992
JW1714_MAGNETIC: N = NO MAGNETIC MATERIAL
JW1714_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
JW1714+STABILITY: POSITION/ELEVATION WELL
JW1714_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
JW1714+SATELLITE: SATELLITE OBSERVATIONS - 1992
JW1714
JW1714  HISTORY     - Date     Condition        Recov. By
JW1714  HISTORY     - 1992     MONUMENTED       MDSHA
JW1714
JW1714                          STATION DESCRIPTION
JW1714
JW1714''DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
JW1714''THE MARKER IS LOCATED ABOUT 3.4 MI (5.5 KM) EAST OF KEYSERS RIDGE,
JW1714''1.6 MI (2.6 KM) WEST OF GRANTSVILLE, AND 8.5 MI (13.7 KM)
JW1714''EAST-NORTHEAST OF ACCIDENT.  IT IS LOCATED ON INTERSTATE HIGHWAY 68
JW1714''RIGHT-OF-WAY.  TO REACH FROM A POINT WHERE STATE HIGHWAY 495 CROSSES
JW1714''OVER INTERSTATE HIGHWAY 68 NEAR GRANTSVILLE, GO WEST ON INTERSTATE
JW1714''HIGHWAY 68 FOR 1.3 MI (2.1 KM) TO THE MARKER ON THE RIGHT.  THE POINT
JW1714''IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK,
JW1714''CEMENTED IN A DRILL HOLE IN BEDROCK.  IT IS 52.0 FT (15.8 M)
JW1714''NORTHWEST OF THE CENTER OF THE WESTBOUND LANE OF INTERSTATE HIGHWAY
JW1714''68, 10.0 FT (3.0 M) NORTHWEST OF A CARSONITE WITNESS POST, 15.0 FT
JW1714''(4.6 M) NORTHWEST OF A DRAINAGE DITCH, 230.0 FT (70.1 M) WEST FROM A
JW1714''SIGN FOR THE EASTBOUND LANE OF INTERSTATE HIGHWAY 68, AND 250.0 FT
JW1714''(76.2 M) EAST OF A WOODS LINE.  IT IS ABOUT 4.0 FT (1.2 M) HIGHER
JW1714''THAN THE SURFACE OF THE HIGHWAY.