LOCATION.-- Lat 39°45'57", long 90°36'16" (NAD of 1927), in SE1/4NW1/4NE1/4 sec. 12, T.15 N., R.14 W., Hydrologic Unit 07130011, Collector Well 1 (Illinois Environmental Protection Agency 52120), about 0.5 mi north of Naples. Owner: City of Jacksonville.

AQUIFER.-- Alluvium of Quaternary age.

WELL CHARACTERISTICS.-- Diameter 8 in., depth 93 ft, cased to 82? ft, 7 horizontal screened laterals, drilled, public supply.

PERIOD OF RECORD.--

GROUND-WATER QUALITY: January 2002.