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- q <br /> I"--NW; <br /> wa <br /> PRASE 1 ifYDROGEOLOGic f VES77GAMON <br /> 4491 West Durham Ferry Road,Tracy,California <br /> 1 DCJLa Project No.40-91-732 <br /> Page 2 <br /> i Developed newly constructed monitoring wells MW-2 and MW-3 as well as the pre-existing <br /> Well(MW-1), contained aU discharge water in 55-gallon drums and stored them on site. ' <br /> f - <br /> • Purged three well casing volumes of water from each monitoring well (MW-1, MW-2, amd <br /> MW-3) and measured pH, temperature, and conductivity. Purged wa r was cont aned in <br /> 55 gallon drums. <br /> e Collected and submitted four ground water samples to a state-certified laboratory for chemical <br /> E. analysis using EPA Method 8260 for TPH as gasoline and BTEX with a 10-working-clay <br /> M1turnaround time. One ground water atmple was collected from each of the existing monitoring <br /> wells and onwater One t <br /> samysle was wilec"ed from the domestic well faucet. <br /> r- <br /> ;: • Surveyed the relative lateral and vertical locations of the ground water monitoring wells. <br /> s Prepared of this report with the chemical results, field reselts, conclusions, and <br /> recommendations. <br /> 2 BACKGROUND INFORMATION <br /> -2,1 Silt DesG7ntlon <br /> The site is located approximately 7.5 miles southeast <br /> ofthe city of Tr cy,California,at the northeast corner <br /> of the intersecron of Durham Ferry Road and Bird Road at 4491 West Durham Perry Road, <br /> Tracy, California. [SW 114, SW 1/4, Section 18,T.3S., RAE, (F gu i re 1)]. : <br /> The site elevation is approximately 100 feet above mean sea level(MSL)as depleted on the U.S.Geological <br /> Survey, Vernalis, California, Quadrangle (1969: photorevised 1980). The regional slope of the land is <br /> -- toward the northeast. <br /> PH100LRP <br />