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- ...k� .. " •#, rs' mF'- � �- t <br /> v � <br /> Table 3 Is a summary of the depths to ground water rind the calculated elevations of the tap <br /> Of ground water that were gauged on 15 Novcmbcr 1988. 111e cicvatinns of the top of <br /> ground water rtrc also summari7cd on figure 2. First water was cnt imicred at depths <br /> below the ground surface between 36 and 43 feet. The static depth to water has since risen <br /> to between 36 and 37 feet txlow 111c top of casing and ground surface. 111c top of ground <br /> water or potentianlctric surface Is rattler flat, 111c indicated direction of flow Is to the <br /> northeast,but the gradient between MWI and M%V3 is 0.()V_. <br /> The stratigraphy beneath Chevron SS 9.1918 Is dominated by A thick section of sudy to <br /> silty clay that overlies a Will sorted,medium w Coarse sand. This sand appears to contain <br /> the pound water and occurs of depths below the ground surface of 36 to 43 feet. This <br /> sand is immediately underlain by an olive gray clay that is very fight and plastic, <br /> Petroleum hydrocarbon contamination was identified in the soils and ground water in each <br /> Of the wells except MW 1;MW I contains no detectable hydrocarbons. The highest <br /> concentrations were encountered in MW3 and MWd north and within the fomxr tank field. <br /> COACentr;stions of petroleum hydrocarbons in both the pound water and the soils diminish <br /> at W2.MW5,and MWG,to the southeast,cast,and northeast of the fomvr tank field <br /> msprctively. <br /> 3 <br />