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7 <br /> C A M B R I A <br /> J <br /> � r <br /> r � <br /> December 31, 2002 <br /> Mr Sam Savig <br /> San Joaquin County Environmental Health Department <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, California 95202 . <br /> ' � r <br /> Re Groundwater Monitoring Report - Fourth Quarter 2002 <br /> Shell-branded Service Station <br /> 620 West Charter Way <br /> Stockton, California <br /> SAP Code 136147 <br /> Incident No 98996187 <br /> SJCEHD Site Code 1058124 <br /> Dear Mr Savig r, <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equilon C <br /> Enterprises LLC dba Shell Oil Products US (Shell) in accordance with the quarterly reporting �7 <br /> requirements of 23 CCR 2652d <br /> FOURTH QUARTER 2002 ACTIVITIES <br /> Blaine Tech Services, Inc (Blaine) of San Jose, California gauged and sampled all wells and <br /> prepared a summary table of field gauging data and petroleum hydrocarbon and methyl tertiary <br /> butyl ether(MTBE) concentrations Cambria prepared a site vicinity/well survey map (Figure 1) <br /> and a groundwater contour/chemical concentration map (Figure 2) Blaine's report, presenting <br /> the laboratory report, is included as Appendix A <br /> ANTICIPATED FIRST 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 <br /> San Ramon CA Cambria completed a cone penetration test (CPT) boring investigation June 10 through 13 <br /> Sonoma CA and 20,2002 We will submit a report of findings under separate cover <br /> Cambria <br /> Environmental <br /> Technology, Inc <br /> Selkins Street <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />