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DESCRIPTION:

Latitude 41°39'09.57",   Longitude 87°33'58.86"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120003

Well depth: 29 feet
Hole depth: 30 feet
Land surface altitude: 586.25 feet above NGVD29.
Well completed in "Sand and gravel aquifers (glaciated regions)" (N100GLCIAL) national aquifer.
Well completed in "Quaternary System" (110QRNR) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1992-06-23	2015-01-15	11
Field/Lab water-quality samples	1993-06-21	1993-06-21	1
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