ME1725 ***********************************************************************
ME1725  DESIGNATION -  SD 88
ME1725  PID         -  ME1725
ME1725  STATE/COUNTY-  IL/COOK
ME1725  USGS QUAD   -  SAG BRIDGE (1997)
ME1725
ME1725                         *CURRENT SURVEY CONTROL
ME1725  ___________________________________________________________________
ME1725* NAD 83(1986)-  41 40 28.     (N)    087 59 54.     (W)     SCALED
ME1725* NAVD 88     -       184.329  (meters)     604.75   (feet)  ADJUSTED
ME1725  ___________________________________________________________________
ME1725  GEOID HEIGHT-         -33.14  (meters)                     GEOID99
ME1725  DYNAMIC HT  -         184.262 (meters)     604.53  (feet)  COMP
ME1725  MODELED GRAV-     980,251.5   (mgal)                       NAVD 88
ME1725
ME1725  VERT ORDER  -  FIRST     CLASS II
ME1725
ME1725.The horizontal coordinates were scaled from a topographic map and have
ME1725.an estimated accuracy of +/- 6 seconds.
ME1725
ME1725.The orthometric height was determined by differential leveling
ME1725.and adjusted by the National Geodetic Survey in June 1991.
ME1725
ME1725.The geoid height was determined by GEOID99.
ME1725
ME1725.The dynamic height is computed by dividing the NAVD 88
ME1725.geopotential number by the normal gravity value computed on the
ME1725.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
ME1725.degrees latitude (g = 980.6199 gals.).
ME1725
ME1725.The modeled gravity was interpolated from observed gravity values.
ME1725
ME1725;                    North         East    Units  Estimated Accuracy
ME1725;SPC IL E     -   556,000.      327,900.      MT  (+/- 180 meters Scaled)
ME1725
ME1725                          SUPERSEDED SURVEY CONTROL
ME1725
ME1725  NGVD 29     -       184.418  (m)          605.04   (f) ADJ UNCH    1 2
ME1725
ME1725.Superseded values are not recommended for survey control.
ME1725.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
ME1725.See file dsdata.txt to determine how the superseded data were derived.
ME1725
ME1725_MARKER: B = BOLT
ME1725_SETTING: 36 = WATER TABLE
ME1725_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
ME1725
ME1725  HISTORY     - Date     Condition        Recov. By
ME1725  HISTORY     - UNK      MONUMENTED       CGS
ME1725  HISTORY     - 1947     GOOD             NGS
ME1725  HISTORY     - 1971     GOOD             NGS
ME1725  HISTORY     - 1977     GOOD             NGS
ME1725  HISTORY     - 1987     GOOD             USPSQD
ME1725  HISTORY     - 1989     GOOD             USPSQD
ME1725
ME1725                          STATION DESCRIPTION
ME1725
ME1725''DESCRIBED BY NATIONAL GEODETIC SURVEY 1947
ME1725''AT LEMONT.
ME1725''AT THE SOUTHEAST CORNER OF THE INTERSECTION OF STEPHENS AND
ME1725''TALCOTT STREETS, AT A STONE BUILDING FORMERLY USED AS A POST
ME1725''OFFICE, AT THE NORTHWEST SIDE OF THE BUILDING, IN THE CENTER
ME1725''OF THE WATER TABLE, AND 1.6 FEET EAST OF THE NORTHWEST CORNER.
ME1725''NOTE-- BUILDING IS NOW THE LEMONT NATIONAL BANK BUILDING.
ME1725
ME1725                          STATION RECOVERY (1971)
ME1725
ME1725''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
ME1725''RECOVERED IN GOOD CONDITION.
ME1725
ME1725                          STATION RECOVERY (1977)
ME1725
ME1725''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
ME1725''RECOVERED IN GOOD CONDITION.
ME1725
ME1725                          STATION RECOVERY (1987)
ME1725
ME1725''RECOVERY NOTE BY US POWER SQUADRON 1987 (MBO)
ME1725''RECOVERED IN GOOD CONDITION.
ME1725
ME1725                          STATION RECOVERY (1989)
ME1725
ME1725''RECOVERY NOTE BY US POWER SQUADRON 1989 (MBO)
ME1725''RECOVERED IN GOOD CONDITION.