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DESCRIPTION:

Latitude 41°37'53",   Longitude 87°51'17"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 0397 feet
Hole depth: 397 feet
Land surface altitude: 710.00 feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian Dolomite" (350SIDO) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1956-05-28	1984-11-14	5
Field/Lab water-quality samples	1984-04-26	1984-11-14	3
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