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no <br /> CAM IA <br /> ®, REAR 1 0 ?005 <br /> ENVIR01VMEIVTMarch 8, 2005 <br /> PERM1rIsER�H�s�H <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-- Fourth Quarter 2004 <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 /> Cambria 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 /> FOURTH QUARTER 2004 ACTIVITIES <br /> a� <br /> Blaine Tech Services, Inc (Blaine)of San Jose, Califorma gauged and sampled all site wells and <br /> prepared a summary table of field gauging and laboratory analytical data Cambria prepared a <br /> site vicinity/sensitive receptor survey map (Figure 1) and a groundwater contour/chemical <br /> concentration map for the shallow zone (Figure 2) A groundwater elevation/chemical <br /> concentration map was not prepared for the deeper zone (Figure 3) A groundwater contour map <br /> was not prepared for the deeper zone due to lack of variation in the groundwater elevation data <br /> Blaine's report,presenting the laboratory report, is included as Appendix A <br /> ANTICIPATED FIRST QUARTER 2005 ACTIVITIES <br /> Quarterly Groundwater Monitoring Blaine will gauge and sample the site wells according to <br /> the existing sampling schedule and tabulate the data Cambna will prepare a groundwater <br /> monitoring report <br /> Site Investigation Activities Cambria submitted a Site Investigation Report, Site Conceptual <br /> Cambria Model Update, Interim Remediation Report on December 16, 2004 documenting the installation <br /> Environmental of three wells, eight soil borings, offsite source research, and interim remediation activities <br /> chnology,Inc <br /> �l0 Perkins Street <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />