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I��r�f�GPJMtt f iii HEWN <br /> I <br /> C A M B R I AAs cjr_ 1!!C' <br /> 03 JUN 20 AM It: 27 <br /> June 16, 2003 <br /> Ms Vickie Mc Cartney <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Yd Floor " �$ <br /> Stockton, California 95202 �A� p J �3",� <br /> Re Groundwater Monitoring Report—Second Quarter 2003 y <br /> Shell-branded Service Station <br /> 1071 North Main Street <br /> Manteca, California <br /> SAP Code 135570 I <br /> Incident No 98995643 <br /> SJCEHD Site Code 506313 <br /> Dear Ms McCartney <br /> On behalf of Equilon Enterprises LLC dba Shell Oil Products US (Shell), Cambria <br /> Environmental Technology, Inc (Cambria) is submitting this groundwater monitoring report in <br /> accordance with the quarterly reporting requirements of 23 CCR 26524 <br /> . SECOND QUARTER 2003 ACTIVITIES <br /> Blaine Tech Services, Inc (Blaine) of San Jose, California gauged and sampled all site wells and <br /> prepared a summary table of field gauging data and petroleum hydrocarbon and methyl tertiary <br /> butyl ether concentrations Cambria prepared an area well survey map (Figure 1) and a <br /> groundwater contour/chenucal concentration map (Figure 2) Blaine's report, presenting the <br /> laboratory report, is included as Appendix A <br /> ANTICIPATED THIRD QUARTER 2003 ACTIVITIES <br /> Blaine will gauge and sample the site wells and tabulate the data Cambria will prepare a <br /> monitoring report <br /> Oakland CA <br /> Sonoma CA CONCLUSIONS AND RECOMMENDATIONS <br /> Portland OR <br /> s e a t t I e WA The concentration ofasoline constituents detected in <br /> g groundwater samples during this quarter's <br /> Cambria monitoring event are consistent with the historical norm for this site <br /> Environmental <br /> Technology,inc As mentioned in last quarter's monitoring report, Cambria recommended reducing fuel <br /> Orkins Street oxygenate (except MTBE) and lead scavenger analysis from quarterly to annually in all wells at <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(7o7)935-6649 <br />