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DESCRIPTION:

Latitude 41°29'19",   Longitude 87°41'06"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120003

Well depth: 361 feet
Hole depth: 361 feet
Land surface altitude: 712 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	1958-12-22	1985-05-23	4
Field/Lab water-quality samples	1985-05-23	1985-05-23	1
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