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Wi <br /> i, <br /> Evaluation of contamination <br /> Former Texaco Service Station, <br /> Man 'teca Californiadanuary 3, 1381 <br /> AGS 38053-I <br /> -------------- <br /> levels for, drinking water recommended by the California <br /> Department of Health Services, <br /> RESULTSOF CHEMICAL TANALYSES OF WATEP <br /> Former Texaco Service Station SAMPLES <br /> *" 941 East Yosemite Avenue <br /> Manteca, California <br /> Sample <br /> }3 Ethyl- Total <br /> Number Tp <br /> Benzene benzene Toluene <br /> Xylenes <br /> W-27-MW1 <0.02 <0.0005 <0.0005 0.0008 <0.0005 <br /> W-27-MW2 0,29 0.0036 <br /> W-27-MW3 0.08 0.0021 0.0037 0.003.0 0.0110 <br /> <0.0005 <0.0005 0.0039 <br /> Results in parts per million <br /> TPH = Total petroleum hydrocarbons as gasoline <br /> Sample designation: <br /> W-27-MW1 <br /> j �-- Monitoring well number <br /> �---� Sample depth in feet below top of well casing <br /> Water sample <br /> EVALUATION OF GROUND-WATER FLOW <br /> The ground-water gradient was evaluated to provide an indication <br /> of the direction of ground-water flow at the site. Differences <br /> in elevation between the taps of each well casing were measured <br /> with an automatic level, and depths to water were measured with a <br /> Solinst electric water level indicator...._—These--data were-combined - - - - <br /> to calculate the relative elevation of the ground-water surface <br /> 14 <br /> - AP101149d 'G00SVste1)7S <br />