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V L Fg <br /> i <br /> V <br /> • A S S 0 C I A T E S I N C <br /> dichloroethane (1,2-DCA), and 1,2-dibromoethane (EDB) utilizing EPA method 8260B <br /> Groundwater well purge and sample logs are contained in Attachment 1 <br /> ANALYTICAL RESULTS <br /> TPHg was detected in samples collected from wells MW-1, MW-2, MW-1P, MW-2P, MW-3P, <br /> and MW-4P MTBE was detected in the samples from wells MW-1, MW-2P, and MW-31? <br /> DIPE was detected in the samples from wells MW-1P, MW-2P, MW-3P, MW-5P, and MW-6P <br /> TBA was detected in the sample from wells MW-2P, MW-3P, and MW-1 1,2-DCA was <br /> detected in samples from MW-3P, MW-5P, and MW-6P A summary of analytical results is <br /> presented in Table 2 Laboratory data sheets and chain-of-custody documentation are contained <br /> in Attachment 2 <br /> RECOMMENDATIONS <br /> Based on the results of the first quarter 2003 monitoring episode, we recommend second quarter <br /> 2003 monitoring and reporting Groundwater samples should be analyzed for TPHg, BTEX, and <br /> fuel oxygenates including MTBE <br /> • Please contact our office at (209) 579-2221 if you have any questions or comments <br /> Respectfully submitted, <br /> ATC Associates Inc <br /> Jim Kundert <br /> Staff Geologist `';'r� Ls f <br /> cJ °l'Sl Q.Sh <br /> Jeanne Homsey, P E a;, cw:L �• ? � <br /> CA Registered Civil Engineer No 47410 <br /> cc Chuck Miller, USA Petroleum Corp <br /> Gordon Boggs/Cori Condon, RWQCB <br /> wlwordpro12591210003-Stockton\Quartly11QR-2003 doc 3 <br />