ME1748 ***********************************************************************
ME1748  DESIGNATION -  S 139
ME1748  PID         -  ME1748
ME1748  STATE/COUNTY-  IL/COOK
ME1748  USGS QUAD   -  SAG BRIDGE (1997)
ME1748
ME1748                         *CURRENT SURVEY CONTROL
ME1748  ___________________________________________________________________
ME1748* NAD 83(1986)-  41 43 03.     (N)    087 53 40.     (W)     SCALED
ME1748* NAVD 88     -       185.770  (meters)     609.48   (feet)  ADJUSTED
ME1748  ___________________________________________________________________
ME1748  GEOID HEIGHT-         -33.23  (meters)                     GEOID99
ME1748  DYNAMIC HT  -         185.703 (meters)     609.26  (feet)  COMP
ME1748  MODELED GRAV-     980,257.5   (mgal)                       NAVD 88
ME1748
ME1748  VERT ORDER  -  FIRST     CLASS II
ME1748
ME1748.The horizontal coordinates were scaled from a topographic map and have
ME1748.an estimated accuracy of +/- 6 seconds.
ME1748
ME1748.The orthometric height was determined by differential leveling
ME1748.and adjusted by the National Geodetic Survey in June 1991.
ME1748
ME1748.The geoid height was determined by GEOID99.
ME1748
ME1748.The dynamic height is computed by dividing the NAVD 88
ME1748.geopotential number by the normal gravity value computed on the
ME1748.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
ME1748.degrees latitude (g = 980.6199 gals.).
ME1748
ME1748.The modeled gravity was interpolated from observed gravity values.
ME1748
ME1748;                    North         East    Units  Estimated Accuracy
ME1748;SPC IL E     -   560,820.      336,520.      MT  (+/- 180 meters Scaled)
ME1748
ME1748                          SUPERSEDED SURVEY CONTROL
ME1748
ME1748  NGVD 29     -       185.857  (m)          609.77   (f) ADJ UNCH    1 2
ME1748
ME1748.Superseded values are not recommended for survey control.
ME1748.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
ME1748.See file dsdata.txt to determine how the superseded data were derived.
ME1748
ME1748_MARKER: DB = BENCH MARK DISK
ME1748_SETTING: 30 = CULVERT
ME1748_STAMPING: S 139 1947
ME1748_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
ME1748
ME1748  HISTORY     - Date     Condition        Recov. By
ME1748  HISTORY     - 1947     MONUMENTED       CGS
ME1748  HISTORY     - 1971     GOOD             NGS
ME1748  HISTORY     - 1977     GOOD             NGS
ME1748  HISTORY     - 1987     POOR             USPSQD
ME1748  HISTORY     - 1989     GOOD             USPSQD
ME1748  HISTORY     - 1989     GOOD             USPSQD
ME1748
ME1748                          STATION DESCRIPTION
ME1748
ME1748''DESCRIBED BY COAST AND GEODETIC SURVEY 1947
ME1748''1.4 MI SW FROM WILLOW SPRINGS.
ME1748''ABOUT 1.4 MILES SOUTHWEST ALONG STATE HIGHWAY 4A (ARCHER AVENUE)
ME1748''FROM THE POST OFFICE AT WILLOW SPRINGS, ABOUT 0.1 MILE NORTHEAST
ME1748''OF THE INTERSECTION OF 95TH STREET, SET IN THE TOP OF THE
ME1748''NORTHEAST END OF THE SOUTHEAST CONCRETE HEAD WALL OF A 36-INCH CLAY
ME1748''TILE PIPE CULVERT, ABOUT 0.65 MILE SOUTHWEST OF THE WILLOW SPRINGS
ME1748''CITY LIMIT SIGN, 15 FEET SOUTHEAST OF THE CENTER LINE OF THE
ME1748''HIGHWAY, 2 FEET SOUTHWEST OF THE NORTHEAST END OF THE HEAD WALL
ME1748''AND 1 FOOT ABOVE THE HIGHWAY.
ME1748
ME1748                          STATION RECOVERY (1971)
ME1748
ME1748''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
ME1748''RECOVERED IN GOOD CONDITION.
ME1748
ME1748                          STATION RECOVERY (1977)
ME1748
ME1748''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
ME1748''RECOVERED IN GOOD CONDITION.
ME1748
ME1748                          STATION RECOVERY (1987)
ME1748
ME1748''RECOVERY NOTE BY US POWER SQUADRON 1987 (MBO)
ME1748''MARK RECOVERED IN POOR CONDITION.
ME1748
ME1748                          STATION RECOVERY (1989)
ME1748
ME1748''RECOVERY NOTE BY US POWER SQUADRON 1989 (CEP)
ME1748''RECOVERED IN GOOD CONDITION.
ME1748
ME1748                          STATION RECOVERY (1989)
ME1748
ME1748''RECOVERY NOTE BY US POWER SQUADRON 1989 (MBO)
ME1748''RECOVERED IN GOOD CONDITION.