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C A M B R I A F SET?Vic E <br /> 03 AUG 13 AM I!: 43 <br /> August 11, 2003 <br /> Ms Lori Duncan <br /> San Joaquin County Environmental Health Department <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report - Second Quarter 2003 <br /> Shell-branded Service Station <br /> 6131 Pacific Avenue <br /> Stockton, California <br /> SAP Code 136149 <br /> Incident No 98996189 <br /> SJCEHD Site Code 1223 <br /> Dear Ms Duncan <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equilon <br /> Enterprises LLC dba Shell Oil Products US (Shell) in accordance with the quarterly reporting <br /> requirements of 23 CCR 2652d <br /> SECOND QUARTER 2003 ACTIVITIES <br /> Blaine Tech Services, Inc (Blaine)of San Jose, California gauged and sampled the site wells and <br /> prepared a summary table of field gauging data and petroleum hydrocarbon and methyl tertiary <br /> butyl ether concentrations Cambria prepared a site vicinity/well survey map (Figure 1) and a <br /> groundwater contour/chemical 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 according to the existing sampling schedule and <br /> tabulate the data Cambria will prepare a groundwater monitoring report <br /> Oakland CA In our Groundwater Monitoring Report -- First Quarte 03; brig requested that Shell be <br /> Sonoma CA 1 <br /> Portland OR allowed to discontinue gauging and monitoring wells MW-6_j*ough MW-I 1 Cambria <br /> Seattle WA discussed this request with San Joaquin County En rvy onmental"Health Department (SJCEHD) <br /> Cambria staff during a July 31, 2003 telephone discussion As discussed, we will await SJCEHD's letter <br /> Environmental addressing the request <br /> i <br /> Technology,Inc <br /> �erklns Street f <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(7o7)935-4850 <br /> Fax(7o7)935-6649 <br />