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DESCRIPTION:

Latitude 42°09'06",   Longitude 88°08'13"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120006

Well depth: 305 feet
Hole depth: 305 feet
Land surface altitude: 830 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 groundwater-level measurements	1922-11-09	1985-07-22	8
Field/Lab water-quality samples	1985-07-22	1985-07-22	2
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