LOCATION.-- Lat41°31'17", long 87°48'17" (NAD of 1927), in SW1/4SE1/4NW1/4 sec. 13, T.35 N., R.12 E., Hydrologic Unit 07120004, Well 8 (Illinois Environmental Protection Agency 20328), about 2.75 mi northeast of Frankfort. Owner: Village of Frankfort.

AQUIFER.-- Dolomite of Silurian age.

WELL CHARACTERISTICS.-- Diameter 6 to 10 in., depth 500 ft, cased to 122 ft, open hole, drilled, public supply.

PERIOD OF RECORD.--

GROUND-WATER QUALITY: December 1985 (see Voelker and others, 1987); August 2002.