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DESCRIPTION:

Latitude 41°48'43",   Longitude 87°58'51"   NAD27
Dupage County, Illinois   , Hydrologic Unit 07120004

Well depth: 278 feet
Hole depth: 278 feet
Land surface altitude: 740 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	1964-11-05	1979-08-03	3
Field/Lab water-quality samples	1985-12-12	1985-12-12	1
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