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Y � � <br /> C A M B R I A IRECM1,11 <br /> i JAN 2 1 2004 <br /> ALTH <br /> Ms Vickie McCartney <br /> San Joaquin County Environmental Health Department <br /> r <br /> 304 East Weber Avenue, 3d Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report— Fourth Quarter 2003 <br /> Shell-branded Service Station <br /> 1071 North Main Street <br /> Manteca, California <br /> SAP Code 135570 <br /> Incident No 98995643 <br /> SJCEHD Site Code 506313 <br /> Dear Ms Mc Cartney <br /> On behalf of Equilon Enterprises LLC dba Shell Oil Products US (Shell), Cambria <br /> Environmental Technology, Inc (Cambria) is submitting this groundwater monitoring report in <br /> accordance with the quarterly reporting requirements of 23 CCR 2652d <br /> FOURTH QUARTER 2003 ACTIVITIES <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 an area well survey map (Figure 1) and a <br /> groundwater contour/chemical concentration map (Figure 2) Blaine's report, presenting the <br /> laboratory report, is included as Appendix A <br /> ANTICIPATED FIRST QUARTER 2004 ACTIVITIES <br /> Blaine will gauge and sample the site wells and tabulate the data Cambria will prepare a <br /> monitoring report We will evaluate this site for closure per San Joaquin County Environmental j <br /> Health Department's November 12, 2003 letter <br /> Oakland CA <br /> San Ramon CA CONCLUSIONS AND RECOMMENDATIONS <br /> Sonoma CA <br /> Cambria <br /> The concentration of gasoline constituents detected in groundwater samples during this quarter's <br /> Environmental monitoring event are consistent with the historical norm for this site The total petroleum <br /> Technology,Inc hydrocarbon as gasoline detection in well MW-3 did not match the laboratory's gasoline <br /> *eTkins Street standard, and therefore may be anomalous <br /> P O Sox 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />