LOCATION.-- Lat 42°18'40", long 88°03'30" (NAD of 1927), in SW1/4NE1/4NW1/4 sec. 10, T.44 N., R.10 E., Hydrologic Unit 07120006. Well 1 (Illinois Environmental Protection Agency 00366), about 2.5 mi southwest of Grayslake. Owner: Saddlebrook Farms.

AQUIFER.-- Dolomite of Silurian age.

WELL CHARACTERISTICS.-- Diameter unrecorded, depth 250 ft, cased to 218 ft, open hole, drilled, public supply.

PERIOD OF RECORD.--

GROUND-WATER QUALITY: November 2001.