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DESCRIPTION:

Latitude 41°41'40",   Longitude 87°42'19"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120003

Well depth: 21 feet
Hole depth: 24 feet
Land surface altitude: 624.31 feet above NGVD29.
Well completed in "Sand and gravel aquifers (glaciated regions)" (N100GLCIAL) national aquifer.
Well completed in "Clay (Holocene and/or Pleistocene)" (110CLAY) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1992-06-23	2015-01-15	9
Field/Lab water-quality samples	1993-06-22	1993-06-22	1
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