LOCATION.-- Lat 41°08'59", long 87°37'00" (NAD of 1983), in NW1/4NE1/4NW1/4 sec.28, T.31N., R.14E., Hydrologic Unit 07120001, near Momence. Owner: U.S. Geological Survey.

AQUIFER.-- Glacial drift of Quaternary age.

WELL CHARACTERISTICS.-- Diameter 2.0 inches, depth 13.5 feet, cased to 8.0 feet, slotted screen, drilled, monitoring.

PERIOD OF RECORD.--

GROUND-WATER QUALITY: July 1999, June 2002.