KX1251 ***********************************************************************
KX1251  DESIGNATION -  IVY
KX1251  PID         -  KX1251
KX1251  STATE/COUNTY-  PA/ALLEGHENY
KX1251  USGS QUAD   -  PITTSBURGH EAST (1993)
KX1251
KX1251                         *CURRENT SURVEY CONTROL
KX1251  ___________________________________________________________________
KX1251* NAD 83(1986)-  40 24 57.     (N)    079 54 50.     (W)     SCALED
KX1251* NAVD 88     -       228.244  (meters)     748.83   (feet)  ADJUSTED
KX1251  ___________________________________________________________________
KX1251  GEOID HEIGHT-         -33.66  (meters)                     GEOID99
KX1251  DYNAMIC HT  -         228.126 (meters)     748.44  (feet)  COMP
KX1251  MODELED GRAV-     980,105.9   (mgal)                       NAVD 88
KX1251
KX1251  VERT ORDER  -  FIRST     CLASS I
KX1251
KX1251.The horizontal coordinates were scaled from a topographic map and have
KX1251.an estimated accuracy of +/- 6 seconds.
KX1251
KX1251.The orthometric height was determined by differential leveling
KX1251.and adjusted by the National Geodetic Survey in June 1991.
KX1251.WARNING-Repeat measurements at this control monument indicate possible
KX1251.vertical movement.
KX1251
KX1251.The geoid height was determined by GEOID99.
KX1251
KX1251.The dynamic height is computed by dividing the NAVD 88
KX1251.geopotential number by the normal gravity value computed on the
KX1251.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
KX1251.degrees latitude (g = 980.6199 gals.).
KX1251
KX1251.The modeled gravity was interpolated from observed gravity values.
KX1251
KX1251;                    North         East    Units  Estimated Accuracy
KX1251;SPC PA S     -   122,450.      416,370.      MT  (+/- 180 meters Scaled)
KX1251
KX1251                          SUPERSEDED SURVEY CONTROL
KX1251
KX1251  NGVD 29     -       228.411  (m)          749.38   (f) ADJ UNCH    1 1
KX1251
KX1251.Superseded values are not recommended for survey control.
KX1251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
KX1251.See file dsdata.txt to determine how the superseded data were derived.
KX1251
KX1251_STAMPING: IVY
KX1251_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
KX1251+STABILITY: SURFACE MOTION
KX1251
KX1251  HISTORY     - Date     Condition        Recov. By
KX1251  HISTORY     - UNK      MONUMENTED       DOD
KX1251  HISTORY     - 1966     GOOD             NGS
KX1251  HISTORY     - 19920401 MARK NOT FOUND   USGS
KX1251
KX1251                          STATION DESCRIPTION
KX1251
KX1251''DESCRIBED BY NATIONAL GEODETIC SURVEY 1966
KX1251''2.1 MI W FROM RANKIN.
KX1251''ABOUT 2.1 MILES WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
KX1251''THE STATION AT RANKIN, ABOUT 0.45 MILE NORTHEAST OF THE HOMESTEAD
KX1251''BRIDGE OVER THE MONONGAHELA RIVER AND THE TRACK, ABOUT 12 1/2
KX1251''RAILS SOUTHWEST OF SIGNAL BRIDGE NO. E 321-12, A BRASS PLATE
KX1251''SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES, 57 1/2 FEET
KX1251''EAST AND ACROSS THREE TRACKS FROM MILEPOST NO. 321-17, 39 FEET
KX1251''NORTHEAST OF THE EXTENDED CENTERLINE OF A STREET THAT LEADS WEST
KX1251''FROM THE NORTHWEST SIDE OF THE TRACKS, 4 FEET NORTHWEST IF THE
KX1251''NORTHWEST RAIL OF THE SOUTHEAST ONE OF 4 TRACKS AND IS BETWEEN
KX1251''THE TWO TRACKS AND 1/2 FOOT BELOW LEVEL OF TRACK.
KX1251
KX1251                          STATION RECOVERY (1992)
KX1251
KX1251''RECOVERY NOTE BY US GEOLOGICAL SURVEY 1992
KX1251''MARK NOT FOUND.