LOCATION.-- Lat 42°12'34", long 88°00'25" (NAD of 1927), in SW1/4NE1/4NE1/4 sec. 13, T.43 N., R.10 E., Hydrologic Unit 07120004, Well 2 (Illinois Environmental Protection Agency 01233), about 2.25 mi northwest of Long Grove. Owner: Fields of Long Grove.

AQUIFER.-- Dolomite of Silurian age.

WELL CHARACTERISTICS.-- Diameter 5 to 6 in., depth 259? ft, cased to 182? ft, open hole, drilled, public supply.

PERIOD OF RECORD.--

GROUND-WATER QUALITY: September 2002.