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i <br /> VV Au� <br /> • A S S O 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 /> TPH-g was detected in samples from wells MW-1, MW-2, MW-1P, MW-2P, MW-3P, and MW- <br /> 4P MTBE was detected in the samples from wells MW-1, MW-2P, and MW-3P DIPE was <br /> detected in the samples from wells MW-1P, MW-2P, MW-3P, MW-5P, and MW-6P TBA was <br /> detected in the sample from well MW-2P 1,2-DCA was detected 1n samples from MW-2P, <br /> MW-3P, MW-5P, and MW-61? A summary of analytical results is presented in Table 2 <br /> Laboratory data sheets and chain-of-custody documentation are contained in Attachment 2 <br /> RECOMMENDATIONS <br /> Based on the results of the fourth quarter 2002 monitoring episode, we recommend first 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 /> ?Sellman <br /> Staff Geologist <br /> J nne Homsey, P E �;- <br /> CA Registered Civil Engineer No 47410 <br /> kyr est 1�Fb��;� <br /> p'r ��t F• 6 <br /> �+,"Y' <br /> cc Chuck Miller, USA Petroleum Corp <br /> Gordon Boggs/Corr, Condon, RWQCBf41, �` <br /> � <br /> • <br /> w lwordpro12591210003-Stockton\Quartly14QR-2002 doc 3 <br />