PROJCS["NAD83 / Illinois East (ftUS)", GEOGCS["NAD83", DATUM["North_American_Datum_1983", SPHEROID["GRS 1980",6378137,298.257222101], EXTENSION["PROJ4_GRIDS","AB_CSRS.DAC"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4269"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",36.6666666666667], PARAMETER["central_meridian",-88.3333333333333], PARAMETER["scale_factor",0.999975], PARAMETER["false_easting",984250], PARAMETER["false_northing",0], UNIT["US survey foot",0.304800609601219], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","3435"]]