LOCATION.-- Lat 41°28'54", long 87°50'35" (NAD of 1927), in SW1/4NE1/4NW1/4 sec. 34, T.35 N., R.12 E., Hydrologic Unit 07120004, Well 5 (Illinois Environmental Protection Agency 20442), within Frankfort. Owner: Village of Frankfort.

AQUIFER.-- Dolomite of Silurian age.

WELL CHARACTERISTICS.-- Diameter 12 to 15 in., depth 428 ft, cased to 115 ft, open hole, drilled, public supply.

PERIOD OF RECORD.--

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