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DESCRIPTION:

Latitude 41°59'30",   Longitude 88°11'06"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120006

Well depth: 200 feet
Hole depth: 200 feet
Land surface altitude: 802.50 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	1945-11-01	1974-01-01	6
Field/Lab water-quality samples	1984-05-30	1985-06-12	2
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