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DESCRIPTION:

Latitude 41°40'21",   Longitude 87°36'41"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120003

Well depth: 89.6 feet
Hole depth: 90.5 feet
Land surface altitude: 600.40 feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Racine Formation" (355RCIN) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1987-11-02	1988-05-12	5
Field/Lab water-quality samples	1993-06-25	1993-06-25	1
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