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DESCRIPTION:

Latitude 42°06'09",   Longitude 87°54'15"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 200 feet
Land surface altitude: 645 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/Lab water-quality samples	1987-10-20	1987-10-20	1
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