LC0638 ***********************************************************************
LC0638  DESIGNATION -  Q 203
LC0638  PID         -  LC0638
LC0638  STATE/COUNTY-  IL/MCLEAN
LC0638  USGS QUAD   -  HOLDER (1981)
LC0638
LC0638                         *CURRENT SURVEY CONTROL
LC0638  ___________________________________________________________________
LC0638* NAD 83(1986)-  40 23 22.     (N)    088 52 20.     (W)     SCALED
LC0638* NAVD 88     -       236.672  (meters)     776.48   (feet)  ADJUSTED
LC0638  ___________________________________________________________________
LC0638  GEOID HEIGHT-         -32.00  (meters)                     GEOID99
LC0638  DYNAMIC HT  -         236.558 (meters)     776.11  (feet)  COMP
LC0638  MODELED GRAV-     980,137.0   (mgal)                       NAVD 88
LC0638
LC0638  VERT ORDER  -  SECOND    CLASS 0
LC0638
LC0638.The horizontal coordinates were scaled from a topographic map and have
LC0638.an estimated accuracy of +/- 6 seconds.
LC0638
LC0638.The orthometric height was determined by differential leveling
LC0638.and adjusted by the National Geodetic Survey in June 1991.
LC0638
LC0638.The geoid height was determined by GEOID99.
LC0638
LC0638.The dynamic height is computed by dividing the NAVD 88
LC0638.geopotential number by the normal gravity value computed on the
LC0638.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
LC0638.degrees latitude (g = 980.6199 gals.).
LC0638
LC0638.The modeled gravity was interpolated from observed gravity values.
LC0638
LC0638;                    North         East    Units  Estimated Accuracy
LC0638;SPC IL E     -   413,380.      254,250.      MT  (+/- 180 meters Scaled)
LC0638
LC0638                          SUPERSEDED SURVEY CONTROL
LC0638
LC0638  NGVD 29     -       236.728  (m)          776.67   (f) ADJ UNCH    2 0
LC0638
LC0638.Superseded values are not recommended for survey control.
LC0638.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
LC0638.See file dsdata.txt to determine how the superseded data were derived.
LC0638
LC0638_MARKER: DB = BENCH MARK DISK
LC0638_SETTING: 30 = CULVERT
LC0638_STAMPING: Q 203 1959
LC0638_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
LC0638
LC0638  HISTORY     - Date     Condition        Recov. By
LC0638  HISTORY     - 1959     MONUMENTED       CGS
LC0638
LC0638                          STATION DESCRIPTION
LC0638
LC0638''DESCRIBED BY COAST AND GEODETIC SURVEY 1959
LC0638''0.4 MI S FROM DOWNS.
LC0638''ABOUT 0.1 MILE SOUTHEAST ALONG THE NEW YORK CENTRAL RAILROAD FROM
LC0638''THE STATION AT DOWNS, THENCE 0.3 MILE SOUTH ALONG AN ASPHALT ROAD,
LC0638''ABOUT 62 YARDS NORTH OF A DRIVEWAY WEST TO A FARM HOUSE, SET IN
LC0638''THE TOP OF THE SOUTH END OF THE WEST HEADWALL OF A 4-FOOT CONCRETE
LC0638''BOX CULVERT, 15 FEET WEST OF THE CENTER LINE OF THE ROAD, ABOUT
LC0638''LEVEL WITH THE ROAD.