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C A M B R I Aro <br /> fit' 3 Z��z September 20, 2002 <br /> Mr Harlin 45mKnollIAV CES K <br /> San Joaquin County Environmentk �� epartment <br /> 304 E Weber Avenue,Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report -Third Quarter 2002 <br /> Shell-branded(Independent)Service Station <br /> 420 West Kettleman Lane <br /> Lodi, California <br /> SAP Code 135445 <br /> Incident No 98995525 <br /> SJCEHD Site Code 19061 <br /> Dear Mr Knoll <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 2002 ACTIVITES <br /> 4 <br /> Blaine Tech Services, Inc (Blaine) of San Jose, California gauged and sampled all Shell site <br /> wells Quarterly sampling events were coordinated with the former Chevron station located at <br /> 301 West Kettleman Lane Blaine prepared a summary table of field gauging data and petroleum <br /> hydrocarbon and methyl tertiary butyl ether (MTBE) concentrations for the Shell site Cambria <br /> prepared a site vicinity map (Figure 1), an extended site map (Figure 2), and a groundwater <br /> contour/chemical concentration map (Figure 3) Blaine's report, presenting the laboratory <br /> reports, is included as Appendix A The well gauging data and analytical results for the former <br /> Chevron station are included in Appendix B <br /> During the third quarter sampling event, no total petroleum hydrocarbons as gasoline, benzene, <br /> or MTBE were detected in any of the Shell site wells Benzene and MTBE data from this <br /> Oakland CA sampling event are presented on Figure 3 <br /> San Ramon CA <br /> Son oma, CA ANTICIPATED FOURTH QUARTER 2002 ACTIVITIES <br /> Cambria <br /> Environmental Blaine will gauge and sample all site wells and tabulate the data Blaine will coordinate the <br /> Technology,Inc event with the former Chevron station located at 301 West Kettleman Lane according to the <br /> 10erkms Street <br /> existing sampling schedule Cambria will prepare a groundwater monitoring report <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />