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T <br /> SIERRA <br /> October 25, 1993 <br /> Environmental Services <br /> Brett Hunter <br /> Chevron USA Products Company <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 Station <br /> #9-6171, located at 6633 Pacific Avenue in Stockton, California Six wells, MW-2 through MW-7, were <br /> sampled (Figure 1) <br /> I <br /> i <br /> On September 15 and September 29, 1993, SES personnel visited the site Water level <br /> measurements were collected in all site wells and all wells were checked for the presence of free-phase <br /> hydrocarbons Free-phase hydrocarbons were not present in any of the site wells Water level data are <br /> shown in Table 1 and ground water elevation contours are included on Figure 1 <br />. The ground water samples were collected on September 15 and September 29, 1993 in accordance <br /> with SES Standard Operating Procedure - Ground Water Sampling (attached) The analyses were <br /> performed by GTEL of Concord, California and Sequoia Analytical of Redwood City, California Analytic <br /> results for ground water are presented in Tables 2, 3 and 4 The chain of custody document and <br /> laboratory analytic reports are attached 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 questions <br /> Sincerely, <br /> E S$/��1 Sierra Environmental Services <br /> CO <br /> ` U 6SGc0lo <br /> e <br /> 1 <br /> �d S�� <br /> �J\���_��;� Vii` C sJ Br er <br /> Professional Engineer #C48846 <br /> AJM/CJB/cb <br /> 14604QM OG3 <br /> Attachments Figure <br /> Tables <br /> SES Standard Operating Procedure <br /> Chain of Custody Document and Laboratory Analytic Reports <br /> P.O. Box 2546 • Martinez, California 94553 (510) 370 - 1280 <br />