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SIERRA <br /> l January 15, 1993 mronmen i Seri r, <br /> Brett Hunter <br /> Chevron USA <br /> P O Box 5004 <br /> San Ramon, CA 94583 <br /> Re Chevron Service Station #9-6171 <br /> 6633 Pacific Avenue <br /> Stockton California <br /> SES Project #1-146-04 <br /> Dear Mr Hunter <br /> This report presents the results of the quarterly ground water sampling at Chevron Service <br /> Station #9-6171, located at 6633 Pacific Avenue in Stockton, California (Figure 1, Appendix A) <br /> Five wells, MW-2 through MW-6, were sampled (Figure 2, Appendix A) <br /> On December 17, 1992, SES personnel visited the site Water level measurements were <br /> collected in all site wells and all wells were checked for the presence of free-phase hydrocarbons <br /> Free-phase hydrocarbons were not present in any of the site wells Water level data are shown <br /> in Table 1 (Appendix B) and a ground water elevation contour map is included as Figure 2 <br /> (Appendix A) <br /> The water samples were collected on December 17, 1992 in accordance with SES Standard <br /> Operating Procedure - Ground Water Sampling (Appendix C) All analyses were performed by <br /> Superior Precision Analytical, Inc of Martinez, California and FGL Environmental Analytical <br /> Chemists of Stockton, California Analytic results for ground water are presented in Tables 2, 3 <br /> and 4 (Appendix B) The chain of custody document and laboratory analytic reports are included <br /> in Appendix D SES is not responsible for laboratory omissions or errors <br /> Thank you for allowing us to provide services to Chevron Please call if you have any <br /> questions <br /> �o pROFESs/� Sincerely, <br /> NqA Sierra Environmental Services <br /> �\Ca <br /> U r�+ Argy na <br /> Staff Geolog t <br /> C <br /> 88 46 <br /> ris Br er <br /> Profess nal ngmeer #C48846 <br /> AJM/CJB/ly "r <br /> 14604QM.JA3 <br /> Appendices A - Figures <br /> B - Tables <br /> C - SES Standard Operating Procedure <br /> D - Chain of Custody Document and Laboratory Analytic Reports <br /> P.O. BOX 2546 • Martinez, California 94553 * (510) 370 - 1280 <br />