LOCATION.-- Lat 41°04'08", long 88°05'41" (NAD of 1927), in SW1/4NW1/4NW1/4 sec. 21 T.30N., R.10E, Hydrologic Unit 07120001, about 0.75 mile north of Herscher. Owner: Private.

AQUIFER.-- Dolomite of Silurian age.

WELL CHARACTERISTICS.-- Diameter 4.88 inches, depth 103.0 feet, cased to 43.0 feet, open hole, drilled, domestic supply.

PERIOD OF RECORD.--

GROUND-WATER QUALITY: Miscellaneous, October 2000.