AI7250 ***********************************************************************
AI7250  DESIGNATION -  PTC 161.4
AI7250  PID         -  AI7250
AI7250  STATE/COUNTY-  PA/BEDFORD
AI7250  USGS QUAD   -  MENCH (1994)
AI7250
AI7250                         *CURRENT SURVEY CONTROL
AI7250  ___________________________________________________________________
AI7250* NAD 83(1996)-  39 59 10.38385(N)    078 15 27.21245(W)     ADJUSTED
AI7250* NAVD 88     -       411.3    (meters)    1349.     (feet)  GPS OBS
AI7250  ___________________________________________________________________
AI7250  X           -     995,986.648 (meters)                     COMP
AI7250  Y           -  -4,791,561.035 (meters)                     COMP
AI7250  Z           -   4,077,055.991 (meters)                     COMP
AI7250  LAPLACE CORR-          -2.40  (seconds)                    DEFLEC99
AI7250  ELLIP HEIGHT-         377.87  (meters)                     GPS OBS
AI7250  GEOID HEIGHT-         -33.41  (meters)                     GEOID99
AI7250
AI7250  HORZ ORDER  -  FIRST
AI7250  ELLP ORDER  -  THIRD     CLASS II
AI7250
AI7250.The horizontal coordinates were established by GPS observations
AI7250.and adjusted by the National Geodetic Survey in August 2000.
AI7250
AI7250.The orthometric height was determined by GPS observations and a
AI7250.high-resolution geoid model.
AI7250
AI7250.The X, Y, and Z were computed from the position and the ellipsoidal ht.
AI7250
AI7250.The Laplace correction was computed from DEFLEC99 derived deflections.
AI7250
AI7250.The ellipsoidal height was determined by GPS observations
AI7250.and is referenced to NAD 83.
AI7250
AI7250.The geoid height was determined by GEOID99.
AI7250
AI7250;                    North         East     Units   Scale      Converg.
AI7250;SPC PA S     -    72,617.397   556,649.444   MT  0.99999215 -0 19 45.5
AI7250;UTM  17      - 4,429,830.123   734,156.744   MT  1.00027504 +1 45 47.2
AI7250
AI7250                          SUPERSEDED SURVEY CONTROL
AI7250
AI7250.No superseded survey control is available for this station.
AI7250
AI7250_MARKER: DD = SURVEY DISK
AI7250_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
AI7250_STAMPING: 1614
AI7250_MAGNETIC: N = NO MAGNETIC MATERIAL
AI7250_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
AI7250+STABILITY: SURFACE MOTION
AI7250
AI7250  HISTORY     - Date     Condition        Recov. By
AI7250  HISTORY     - 2000     MONUMENTED       NEILAN
AI7250
AI7250                          STATION DESCRIPTION
AI7250
AI7250''DESCRIBED BY THE NEILAN ENGINEERS INCORPORATED 2000 (TEK)
AI7250''TO REACH THE STATION FROM THE TOLL BOOTH AT BREEZEWOOD, EXIT 12,
AI7250''PROCEED 0.3 MI (0.5 KM) ON THE TURNPIKE ON RAMP FOR EASTBOUND TRAFFIC.
AI7250''AFTER CROSSING OVER THE TURNPIKE, TURN RIGHT TO TOP OF MOUND AND
AI7250''STATION.  THE STATION IS ABOUT 190 FT (57.9 M) SOUTH AND 75 FT (22.9
AI7250''M) WEST OF THE TOLLBOOTH.