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Pacific Gas and Electric Cor"pany Technical and Ecological Services <br /> 3400 Crow Canyon Road <br /> San Ramon,CA 94583. <br /> 5101820-2000 + <br /> May 25, 1994 1 <br /> a ;I <br /> Mr. ME14ifll <br /> San Joaquin County PHS <br /> Environmental Health Division <br /> PO Box 2009 <br /> Stockton, CA 95201 <br /> RE. First Semester 1994 Groundwater Monitoring Report <br /> Tracy Service Center Underground Tank Investigation <br /> 502 East Grant Line Road, Tracy, CA <br /> Dear Alr. : <br /> ,Enclosed is the first semi-annual groundwater monitoring report of 1994 for PG&E's Tracy <br /> Service Center. The report.includes a discussion'of the tasks performed and the analytical results <br /> obtained during the April 5 sampling.event. During-this sampling event, dissolved phase gasoline <br /> hydrocarbons were encountered in the groundwater sample collected from well OW-2 located <br /> downgraciient and within 10 feet of the former tank location. Gasoline hydrocarbons'were not <br /> detected in the sample.collected from well MW-6 located 65 feet do«mgradient of the former tank . <br /> location, or in the field blank. These results are unchanged from.previous monitoring events. <br /> Wells OW-1; OW-3, OW-4, and OW-5 we-re monitored for groundwater contounng purposes <br /> only. <br /> 1 <br /> The groundwater flow direction has been consistently to the north-northeast since the beginning <br /> of the tank investigation. <br /> The next monitoring event is scheduled for October]994. Please call meat(510) 866-5888 if <br /> you have any questions about the site. <br /> Sincerely, <br /> Eric Johnson <br /> Environmental Specialist, REA MAY 2 7 1994 <br /> Enclosure ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> - i <br /> I <br /> II <br /> l' <br />