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r} � RIECEWED <br /> ,y. <br /> C A M B R I A JAN 232003 <br /> ENVIRONMENT HEALTH <br /> PERMIT/SERVICES January 20,2003 <br /> Ms Lon Duncan <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 /> 7910 Lower Sacramento Road <br /> Stockton, California <br /> SAP Code 136139 <br /> Incident No 98996180 <br /> SJCEHD Site Code 1660 <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 /> i 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 site vicinity map (Figure 1) and a groundwater <br /> contour/chemical concentration map(Figure 2) Blaine's report, presenting the laboratory report, <br /> is included as Appendix A <br /> Cambria drilled two soil borings onsite on October 16, 2002 We will submit a site investigation <br /> report summarizing these results under separate cover <br /> ANTICIPATED FIRST QUARTER 2003 ACTIVITIES <br /> Oakland CA <br /> San Ramon CA Blaine will gauge and sample the site wells according to the existing sampling schedule and <br /> S o n o m a C A tabulate the data Cambria will prepare a groundwater monitoring report <br /> Cambria <br /> Environmental <br /> Technology, Inc <br /> Bo�rkins Street <br /> P x 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4950 <br /> Fax(707)935-6649 <br />