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4 � ` <br /> C A M B R I A ��4�'='= �'�''!�- � �1� 11EALM <br /> 03 OCT 17 PM 1: 23 <br /> October 15, 2003 <br /> Ms Lori Duncan <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report—Third Quarter 2003 <br /> Shell-branded Service Station <br /> 7910 Lower Sacramento Road <br /> Stockton, California <br /> SAP Code 136139 <br /> Incident No 98996180 <br /> SJCEHD Site Code 1660 <br /> Dear Ms Duncan <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 /> THIRD QUARTER 2003 ACTIVITIES <br /> Cambria submitted a Site Investigation Report/Request for Case Closure on July 17, 2003 <br /> Blaine Tech Services, Inc (Blaine) of San Jose, California gauged and sampled all site wells and <br /> prepared a summary table of field gauging data and petroleum hydrocarbon and methyl tertiary <br /> butyl ether concentrations Cambria prepared a site vicinity map (Figure 1) and a groundwater <br /> contour/chemical concentration map(Figure 2) Blaine's report,presenting the laboratory report, <br /> is included as Appendix A <br /> ANTICIPATED FOURTH QUARTER 2003 ACTIVITIES <br /> Blaine will gauge and sample the site wells according to the existing sampling schedule and <br /> tabulate the data Cambria will prepare a groundwater monitoring report <br /> 1 <br />