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J I -)r <br /> �F n <br /> CAM RIA NOV 42003 <br /> { ��yVlRO�M�NT HEALTH <br /> PERMI�IS�RVIGES <br /> November 10, 2003 <br /> Mr Mike Infurna <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Street,Third Floor <br /> Stockton,California 95202 <br /> Re Groundwater Monitoring Report—Third Quarter 2003 <br /> Shell-branded Service Station <br /> 2494 East Fremont Street <br /> Stockton, California <br /> SAP Code 136141 <br /> Incident No 98996181 <br /> SJCEHD Site 506171 <br /> Dear Mr Infurna <br /> Cambna Environmental Technology, Inc (Cambna) 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 /> Quarterly Groundwater Monitoring Blaine Tech Services, Inc (Blaine) of San Jose, California <br /> gauged and sampled all site wells and prepared a summary table of field gauging data and <br /> petroleum hydrocarbon and methyl tertiary butyl ether concentrations Cambna prepared a <br /> summary table of additional groundwater analytical data (Table 1), a site vicinity/sensitive <br /> receptor survey map (Figure 1), and groundwater contour/chemical concentration map for both <br /> shallow and deeper zones (Figures 2 and 3) Blaine's report, presenting the laboratory report, is <br /> included as Appendix A <br /> Site Inpestigation• Cambria submitted a Site Conceptual Model dated August 14, 2003 and a <br /> Revised Site Investigation Work Plan/Response Letter on August 28, 2003 in response to the San <br /> Joaquin County Environmental Health Department (SJCEHD) letter dated July 18, 2003 The <br /> Oakland CA work plan proposes additional investigation activities for the subject site <br /> San Ramon, CA <br /> Sonoma CA <br /> i <br /> Cambria <br /> Environmental <br /> Technology,Inc <br /> Perkins Street <br /> P 0 Box 259 <br /> Sonoma,CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />