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CAMBRIA j�,,, n , <br /> . � 7005 <br /> Ettk&3M, , 'll hl H <br /> PPS' °1 �s June 24, 2005 <br /> Mr Michael Infurna <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report -- Second Quarter 2005 <br /> Former Shell Service Station <br /> 2575 Country Club Boulevard <br /> Stockton, California <br /> SAP Code 136144 <br /> Incident No 98996184 <br /> SJCEHD Site Code 1071 <br /> Dear Mr Infurna <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 /> SECOND QUARTER 2005 ACTIVITIES <br /> Blaine Tech Services, Inc (Blaine) of San Jose, California gauged and sampled the wells and <br /> prepared a summary table of field gauging and laboratory analytical data Blaine also collected <br /> monthly samples from monitoring well MW-14 and one offsite domestic well Cambna prepared <br /> a site vicinity map (Figure 1) and a groundwater contour/chemical concentration map (Figure 2) <br /> Blaine's report, presenting the laboratory reports, is included as Appendix A <br /> Cambria submitted its Overexcavation Report/Site Conceptual Model on May 20, 2005 <br /> documenting overexcavation activities that took place in late 2004 and including a Site <br /> Conceptual Model and a work plan for reinstallation of well MW-5 <br /> REMEDIATION <br /> From March 1999 through August 2000, periodic groundwater extraction (GWE) events were <br /> Cambria performed on well RW-1A During each GWE event, approximately 5,000 gallons of water was <br /> Environmental purged by a vacuum truck and transported to the Martinez Refining Company for recycling On <br /> 0hnology,Inc August 22, 2000 a pump was installed in RW-1A, which pumped into a Baker tank A vacuum <br /> 270 Perkins Street truck emptied the tank and recycled the water as described above During March 2001,the Baker <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> fax(707)935-6649 <br />