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California Regional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair 0 <br /> Alan C.Lloyd Ph.D <br /> Secretary for Sacramento Main Office Arnold Governor ger <br /> Internet Address: h //www.swrcb.ca. ov/rw cb5 Governor <br /> Environmental ttP� S 9 5_ , <br /> Protection 11020 Sun Center Drive#1200 Rancho Cordova,CA 95670-6114 1 <br /> - <br /> Phone(916)464-3291 L <br /> DSC 2 4 2004 <br /> 24 December 2004 . <br /> CERTIFIED MAIL CERTIFIED MAIL # <br /> 70030500000479078181 70030500000479078198 <br /> Ms. Wanda Hansen Alica and Juan Murphy <br /> 18142 S. Airport Way 18202 S. Airport Way <br /> Manteca, CA 95337 Manteca, CA 95337 <br /> DECEMBER 2004 SAMPLING RESULTS, CLEANUP AND ABATEMENT ORDER <br /> NO. RS-2003-0713, FRANK'S ONE STOP, 2072 WEST YOSEMITE A VENUE, <br /> MANTECA, SAN JOA QUIN COUNTY <br /> In August 2003 the Executive Officer of the Central Valley Regional Water Quality Control <br /> Board issued Cleanup and Abatement Order No. R5-2003-0713 (Order) for the former Frank's <br /> One Stop at 2072 Yosemite Avenue. The Order directed the responsible parties to investigate and <br /> remediate the effects of an earlier gasoline release from the station's underground storage tanks. <br /> In addition, the Order required the responsible parties to conduct periodic monitoring of the <br /> nearby domestic wells. <br /> Samples taken on December 2nd 2004 found very low levels of MtBE (0.53 and 0.57 gg/L) in the <br /> domestic wells at 18202 and 18142 S. Airport Way respectively. The presence of MTBE was <br /> confirmed in follow-up samples taken on December 15th (see enclosed copies of the laboratory <br /> data sheets). No contamination was found in the well at 18166 S. Airport Way, located between <br /> the two subject sites (see enclosed site map). <br /> While any quantity of MtBE is undesirable in drinking water, the concentrations found in your <br /> wells are approximately an order of magnitude below the lowest established drinking water <br /> standards (5.0 µg/L based on the Taste and Odor Threshold). It is our intent to have the <br /> responsible parties remediate all effects of the gasoline release. Until that time the responsible <br /> parties have been directed to monitor your wells quarterly and provide you with copies of the <br /> analytical results. <br /> California Environunental Protection A;encp <br /> Ocycled Paper <br />