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26485 THORNTON ROAD <br /> WKA No 2556 02 <br /> September 19, 1994 <br /> Page 2 <br /> The two-inch diameter submersible pump was cleaned prior to purging each well with a solution <br /> of Liqui-nox and water to minimize the potential for cross-contamination All water removed <br /> during sampling and purging operations was placed m sealed and labeled 55-gallon drums and <br /> stored on site <br /> No free product or sheen was observed m monitoring wells MW1, MW2, or MW3 Analytical <br /> results of water sample MW1 revealed no detectable concentrations of TPH as gasoline or <br /> BTEX Analytical results of water sample MW2 revealed a TPH as gasoline concentration of <br /> 250 ug/L and trace concentrations of benzene and total xylenes, toluene and ethylbenzene were <br /> not detected Analytical results of water sample MW3 revealed a TPH as gasoline concentration <br /> of 57 ug/L, BTEX was not detected Analytical results for ground water samples obtained from <br /> the three on-site monitoring wells are summarized in Table 2 Complete analytical results and <br /> chain-of-custody documentation are included in the Appendix <br /> The fourth quarter of ground water sampling is scheduled for November, 1994 A summary of <br /> our findings will be transmitted upon completion of laboratory testing Please call of you have <br /> any questions regarding this report <br /> Wallace ■ Kuhl & Associates, Inc <br /> Robert Kull Eric Hubbard <br /> Staff Engineer Registered Geologist #4807 <br /> RNK EJH rbn sdm <br /> Copy to Mr Steve Sasson, San Joaquin County Public Health Services <br /> RabV�36.02.QT3 <br /> WALLACE KUHL <br /> Rmcledpape &ASSOCIATES INC. <br />