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DESCRIPTION:

Latitude 38°00'16",   Longitude 121°45'45"   NAD27
Contra Costa County, California   , Hydrologic Unit 18040003

Well depth: 140 feet
Hole depth: 140 feet
Land surface altitude: 50.00 feet above NGVD29.
Well completed in "Central Valley aquifer system" (S100CNRLVL) national aquifer.
Well completed in "Quaternary Alluvium" (110ALVM) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1962-01-01	1980-04-10	2
Field/Lab water-quality samples	1972-09-20	1982-09-24	26
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