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DESCRIPTION:

Latitude 41°49'52",   Longitude 87°49'12"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 1980 feet
Hole depth: 2047 feet
Land surface altitude: 620 feet above NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1898-01-01	1959-10-27	5
Field/Lab water-quality samples	1931-03-31	1972-05-17	6
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