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E Well Installation <br /> The wells should be screened from approximately five feet above to 15 feet below the water <br /> ' table to allow for groundwater fluctuation and measurement of potential free-phase floating <br /> gasoline Based on site stratigraphy screened casing should consist of 0 01 slot size with a#2-16 <br /> sand filter pack and the wells finished with a bentonite/cement annular grout and water tight <br /> locking well boxes <br /> 8.2 Well Development and Sampling <br /> ' Subsequent to installation the wells should be developed by pumping and/or bailing techniques <br /> to allow for collection of representative groundwater samples Samples should be analyzed for <br /> BTEX and TPHg, and results submitted to PHS/EHD <br /> 9.0 REFERENCES <br /> O Geology, Hydrogeology, and Water Quality of the Tracy Dos Palos Area, San Joaquin <br /> Valley, California, Hotchkiss, W R and Balding, G. O 1971, USGS Open-File <br /> Report, 104 pp <br /> o San Joaquin Flood Control and Conservation District Semi-Annual Groundwater Report, <br /> ' Spring 1992, San Joaquin County Flood Control and Water Conservation District <br /> O Summary Report, Subsurface Investigation of Hydrocarbon Contamination, Tracy Public <br /> Schools Bus Facility, WaterWork Corp , January 26, 1988. <br /> 1 <br /> 1 <br /> 1500971R 053194 FNL 11 <br /> r <br />