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C A M B R <br /> 1 k x5 <br /> 03 DCT 23 October 20, 2003 <br /> ' Ms Margaret Lagorio <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue,Third Floor <br /> Stockton,California 95202 <br /> Re Groundwater Monitoring Report—Third Quarter 2003 <br /> Shell-branded Service Station <br /> 2320 El Dorado Street <br /> Stockton, California <br /> SAP Code 136145 <br /> ' Incident No 97471.966 <br /> Dear Ms Lagono <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 /> THIRD 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 a table of oxygenate data (Table 1), a site vicinity <br /> map (Figure 1), and a groundwater contour/chemical concentration map (Figure 2) Blaine's <br /> report, presenting the laboratory report, is included as Appendix A <br /> The laboratory noted that the hydrocarbons reported as total petroleum hydrocarbons as gasoline <br /> for well MW-2 does not snatch the gasoline standard <br /> ' ANTICIPATED FOURTH QUARTER 2003 ACTIVITIES <br /> ' Blaine will gauge and sample all site wells according to the existing sampling schedule and <br /> Oakland CA tabulate the data Cambria will prepare a groundwater monitoring report <br /> San Ramon CA <br /> Sonoma CA <br /> Cambria <br /> Environmental <br /> Technology,Inc <br /> 270 Perkins Street <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> ' Tel(707)935-+,850 <br /> Fax(707)935-6649 <br />