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DESCRIPTION:

Latitude 41°30'21",   Longitude 87°34'58"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120003

Well depth: 460 feet
Hole depth: 460 feet
Land surface altitude: 637 feet above NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1972-09-20	1972-09-20	1
Field/Lab water-quality samples	1987-04-28	1987-04-28	1
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