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DESCRIPTION:

Latitude 41°53'16",   Longitude 87°52'26"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 1966 feet
Hole depth: 1966 feet
Land surface altitude: 631.00 feet above NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1935-03-12	1935-03-12	1
Field/Lab water-quality samples	1929-04-27	1987-12-22	24
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