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DESCRIPTION:

Latitude 42°07'53",   Longitude 87°48'11"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 1370 feet
Land surface altitude: 645 feet above NGVD29.
Well completed in "Cambrian-Ordovician aquifer system" (S300CAMORD) national aquifer.
Well completed in "Ordovician System" (360ODVC) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1959-11-05	1959-11-05	1
Field/Lab water-quality samples	1961-06-01	1979-04-09	3
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