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DESCRIPTION:

Latitude 41°47'40",   Longitude 87°56'50"   NAD27
Dupage County, Illinois   , Hydrologic Unit 07120004

Well depth: 370 feet
Hole depth: 370 feet
Land surface altitude: 717 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	1956-04-12	1985-09-10	16
Field/Lab water-quality samples	1985-09-10	1985-09-10	1
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