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1444 MARIPOSA ROAD <br /> WKA No 2938 03 <br /> August 6, 1996 <br /> Page 2 <br /> method 602, and Benzene, Toluene, Ethylbenzene, and Total Xylenes(BTEX) using EPA method <br /> 602 A clean "travel blank" of distilled water was transported along with the water samples for <br /> the purposes of detecting cross-contamination from field activities Monitoring wells MW <br /> through MW3 and the onsite domestic well were sampled and analyzed for MTBE, as required by <br /> San Joaquin County Public Health Services <br /> All water removed during purging operations was placed in sealed, labeled 55 gallon drums and <br /> stored on-site <br /> Results of laboratory analysis of the water sample obtained from MW 1 revealed detectable <br /> concentrations of TPH as gasoline of 116 parts per billion (ppb) and benzene of 0 81 ppb <br /> Analysis of water samples obtained from the wells MW2, MW3 and the Domestic Well revealed <br /> no detectable concentrations of Total Petroleum Hydrocarbons(TPH) as gasoline, diesel , motor <br /> oil, or BTEX above the reported laboratory method detection limits Results of laboratory <br /> analysis revealed detectable concentrations of MTBE In water sampes obtained from MW 1 (3 76 <br /> ippb) and MW2 (2 10 ppb) MTBE was not detected in water samples obtained from MW3 or the <br /> domestic well above reported laboratory method detection limits Sample analytical results are <br /> summarized in Table 2 Complete laboratory reports and chain-of-custody documentation are <br /> appended <br /> Please call if you have any questions regarding this report <br /> Wallace • Kuhl & Associates, Inc <br /> Matthew A Taylor Eric Hubbard <br /> Senior StaffEngineer Registered Geologist #4807 <br /> Copies to Mr Steve Sasson, San Joaquin County Public Health Services <br /> Mr John Furman <br /> Ma¢hew12938-03 QT2 <br /> INK <br /> WALLACE KUHL <br /> RecycWpV" &ASSOCIATES INC <br />