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i <br /> CAMBRiA <br /> July 12, 2005 <br /> Ms. Vicki McCartney w <br /> San Joaquin County Environmental Health.Department o <br /> 304 East Weber Avenue, 3rd Floor � �� <br /> Stockton, California 95202 <br /> Re: .Groundwater Monitoring Report-Second Quarter 2005 <br /> Shell-branded Service Station 'A, <br /> 341 East Main Street <br /> Ripon, California G � <br /> SAP Code 135816 <br /> Incident No. 98995874 <br /> SJCEHD Site Code: 506186 <br /> Dear Ms. McCartney: <br /> Cambria Environmental Technology, Inc..:(Cambria)is submitting this groundwater monitoring <br /> report on behalf of Equilon Enterprises LLC dba Shell Oil Products US (Shell) in accordance <br /> with.the quarterly reporting requirements of 23 CCR 2652d. <br /> SECOND QUARTER 2005 ACTIVITIES <br /> Groundwater Monitoring: Blaine Tech Services, Inc. (Blaine) of San Jose, California gauged <br /> and sampled all wells and prepared a summary table of field.gauging and laboratory analytical <br /> 'data. Cambria prepared an area well survey map (Figure 1) and a groundwater contour/chemical. . <br /> concentration map for the deep zone (Figure 2) and for the shallow zone (Figure 3). Blaine's <br /> j report, presenting the first quarter 2005 laboratory report, supporting field notes, and the <br /> additional March 2005 monthly sampling results for well MW-6A are included as Appendix A. <br /> Monthly Sampling:. Cambria received the March 16, 2005 San Joaquin County Environmental <br /> Health Department (SJCEHD) letter which approves discontinuing monthly sampling of well <br /> MW-6A. Monthly sampling of Well MW-6A was discontinued after the March 2005 sample was <br /> collected and this well was placed back on a quarterly monitoring schedule. <br /> June Meeting: Shell and Cambria met with San Joaquin County. Environmental Health <br /> Department (SJCEHD) staff on June 9, 2005 to discuss Shell sites in San Joaquin County. <br /> Cambria During this meeting Cambria presented the Case Closure Summary for this site. <br /> Environmental <br /> 4 'technology,Inc. <br /> 270 Perkins SSreel <br /> Sonoma,CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />