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1 <br /> LrFU <br /> C A M B R I A D, <br /> DEC 2 3 2002 <br /> ENVIRONMENT HEALTH December 18, 2002 <br /> PERMIT/SERVICES <br /> Mr Jeffrey Wong <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report - Fourth Quarter 2002 <br /> Shell-branded Service Station <br /> 4315 Waterloo Road <br /> Stockton, California <br /> SAP Code 136143 <br /> Incident No 98996183 <br /> SJCEHD Code 1760 <br /> Dear Mr Wong <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 /> FOURTH QUARTER 2002 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 a table of oxygenate and lead scavenger data <br /> (Table 1), a site vicinity/receptor survey map (Figure 1), and a groundwater contour/chermcal <br /> concentration map (Figure 2) Blaine's report, presenting the laboratory report, is included as <br /> Appendix A <br /> ANTICIPATED FIRST QUARTER 2003 ACTIVITIES <br /> Blame will gauge and sample all 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 <br /> Sonoma CA <br /> Cambria <br /> Environmental <br /> Technology, Inc <br /> *Ykins Street <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />