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DESCRIPTION:

Latitude 41°38'56",   Longitude 87°49'26"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120003

Well depth: 234 feet
Land surface altitude: 710 feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field/Lab water-quality samples	1987-04-22	1987-04-22	2
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