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r 1 <br /> C A M B R I A <br /> April 12, 2004 <br /> IL, <br /> ? v. <br /> Ms Vickie McCartney <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, 3rd Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report- First Quarter 2004 <br /> RECIEn <br /> D <br /> Shell-branded Service Station <br /> 341 East Main Street A PR 14 2004 <br /> Ripon,California <br /> SAP Code 135816 EnIIJ,'�UNMNT HEALTH <br /> Incident No 98995874 PERPI171SE°VICES <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 /> FIRST QUARTER 2004 ACTIVITIES <br /> Blaine Tech Services, Inc (Blaine) of San Tose, California gauged and sampled selected wells <br /> and prepared a summary table of field gauging and laboratory analytical data Cambria prepared <br /> an area well survey map (Figure 1) and a groundwater contour/chemical concentration map for <br /> the deep zone (Figure 2) and for the shallow zone(Figure 3) Blaine's report, presenting the first <br /> quarter 2004 laboratory report, supporting field notes and the additional November and December <br /> 2003 monthly sampling results for well MW-6A, are included as Appendix A <br /> GROUNDWATER REMEDIATION <br /> Interim Groundwater Remediation Blaine began weekly purging of onsite monitoring well <br /> MW-1 on November 10, 1998 and onsite extraction well EW-1 on March 11, 1999 This practice <br /> continued until the groundwater extraction(GWE) system was started during March 2000 <br /> Cambria <br /> Environmental <br /> Technology,Inc <br /> Perkins Street <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4650 <br /> Fax(707)935-6649 <br />