ME1850 ***********************************************************************
ME1850  DESIGNATION -  Q 137
ME1850  PID         -  ME1850
ME1850  STATE/COUNTY-  IL/COOK
ME1850  USGS QUAD   -  PALOS PARK (1997)
ME1850
ME1850                         *CURRENT SURVEY CONTROL
ME1850  ___________________________________________________________________
ME1850* NAD 83(1986)-  41 40 30.     (N)    087 48 17.     (W)     SCALED
ME1850* NAVD 88     -       184.295  (meters)     604.64   (feet)  ADJUSTED
ME1850  ___________________________________________________________________
ME1850  GEOID HEIGHT-         -33.27  (meters)                     GEOID99
ME1850  DYNAMIC HT  -         184.227 (meters)     604.42  (feet)  COMP
ME1850  MODELED GRAV-     980,253.2   (mgal)                       NAVD 88
ME1850
ME1850  VERT ORDER  -  FIRST     CLASS II
ME1850
ME1850.The horizontal coordinates were scaled from a topographic map and have
ME1850.an estimated accuracy of +/- 6 seconds.
ME1850
ME1850.The orthometric height was determined by differential leveling
ME1850.and adjusted by the National Geodetic Survey in June 1991.
ME1850
ME1850.The geoid height was determined by GEOID99.
ME1850
ME1850.The dynamic height is computed by dividing the NAVD 88
ME1850.geopotential number by the normal gravity value computed on the
ME1850.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
ME1850.degrees latitude (g = 980.6199 gals.).
ME1850
ME1850.The modeled gravity was interpolated from observed gravity values.
ME1850
ME1850;                    North         East    Units  Estimated Accuracy
ME1850;SPC IL E     -   556,140.      344,020.      MT  (+/- 180 meters Scaled)
ME1850
ME1850                          SUPERSEDED SURVEY CONTROL
ME1850
ME1850  NGVD 29     -       184.387  (m)          604.94   (f) ADJ UNCH    1 2
ME1850
ME1850.Superseded values are not recommended for survey control.
ME1850.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
ME1850.See file dsdata.txt to determine how the superseded data were derived.
ME1850
ME1850_MARKER: DB = BENCH MARK DISK
ME1850_SETTING: 30 = CULVERT
ME1850_STAMPING: Q 137 1947
ME1850_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
ME1850
ME1850  HISTORY     - Date     Condition        Recov. By
ME1850  HISTORY     - 1947     MONUMENTED       CGS
ME1850  HISTORY     - 1971     GOOD             NGS
ME1850  HISTORY     - 1977     GOOD             NGS
ME1850
ME1850                          STATION DESCRIPTION
ME1850
ME1850''DESCRIBED BY COAST AND GEODETIC SURVEY 1947
ME1850''6.9 MI NW FROM BLUE ISLAND.
ME1850''ABOUT 6.9 MILES NORTHWEST ALONG STATE HIGHWAY 83 FROM THE GRAND
ME1850''TRUNK AND WESTERN RAILROAD STATION AT BLUE ISLAND, ABOUT 0.45
ME1850''MILE EAST OF THE OVER PASS OF THE WABASH RAILWAY, ABOUT 0.5 MILE
ME1850''EAST OF THE INTERSECTION OF STATE HIGHWAY 7, ABOUT 250 FEET
ME1850''WEST OF THE ENTRANCE TO THE PALOS HEIGHTS TRAP AND GUN CLUB, SET
ME1850''IN THE TOP OF THE EAST END OF THE SOUTH CONCRETE HEAD WALL OF A
ME1850''20-FOOT DOUBLE CONCRETE BOX CULVERT, 34 FEET SOUTH OF THE CENTER
ME1850''LINE OF THE HIGHWAY, 6 FEET WEST OF THE EAST END OF THE HEAD WALL
ME1850''AND ABOUT 0.5 FOOT BELOW THE HIGHWAY.
ME1850
ME1850                          STATION RECOVERY (1971)
ME1850
ME1850''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
ME1850''RECOVERED IN GOOD CONDITION.
ME1850
ME1850                          STATION RECOVERY (1977)
ME1850
ME1850''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
ME1850''RECOVERED IN GOOD CONDITION.