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4 <br /> Shell Groundwater Monitoring Report—Third Quarter 2014 <br /> Section 1.0 Introduction <br /> Conestoga-Rovers&Associates(CRA) prepared this report on behalf of Equilon Enterprises LLC dba Shell <br /> Oil Products US(Shell). <br /> 1.1 Site Information <br /> Site Address Cordes Ranch,Tracy, CA <br /> Site Use Agricultural land <br /> Shell Program Manager Kevin Dyer <br /> CRA Project Manager Dan Lescure <br /> Lead Agency and Contact CVRWQCB, Mike Smith <br /> Shell SAP Code 805248 <br /> Shell Incident No. 7999034 <br /> Section 2.0 Site Activities and Findings <br /> 2.1 Current Quarter's Activities <br /> Blaine Tech Services, Inc. (Blaine) gauged and sampled the wells according to the established monitoring <br /> program for this site. This site is monitored quarterly and CRA issues groundwater monitoring reports <br /> following the sampling events. <br /> CRA prepared a vicinity map (Figure 1)a site plan showing the monitoring well locations(Figure 2), a <br /> groundwater chemical concentration map(Figure 3). Table 1 presents the groundwater data. Blaine's <br /> field notes are presented in Appendix A,the laboratory report is presented in Appendix B, and the data <br /> validation report is presented in Appendix C. <br /> Standard quality control samples(i.e. trip blank,equipment blank, duplicate) were included with the <br /> sample set. <br /> 2.2 Current Quarter's Findings <br /> 2.2.1 Groundwater <br /> The groundwater elevation for well MW-16 is presented on Figure 3. The depth to groundwater in MW- <br /> 16 was 37.19 feet below grade,which equates to 85.75 feet above mean sea level. Petroleum <br /> hydrocarbons were not detected in well MW-16. <br /> CONESTOGA-ROVERS <br /> &ASSOCIATES <br /> 060223(37) <br /> October 2014 1 <br />