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S E C o R <br /> Mr Scott Sloan <br /> May 17, 2004 <br /> Page 3 <br /> FORTHCOMING ACTIVITIES <br /> During the second quarter of 2004, SECOR will conduct groundwater monitoring and sampling activities at the <br /> site The results of these activities will be summarized in a quarterly monitoring report to be submitted in July <br /> 2004 <br /> In order to evaluate the effectiveness of the SVE system, during the second quarter 2004, SECOR will submit <br /> a work plan involving the advancement of confirmation soil borings in the area previously remediated by SVE <br /> Upon receipt of the results of the assessment, SECOR will prepare a site conceptual model (SCM) to <br /> determine if the site qualifies for no further action(NFA) status If the site meets NFA requirements, SECOR <br /> will submit documentation requesting site closure, which will be prepared in accordance with guidelines <br /> presented in the Appendix B Th-Regional Board Staff Recommendation For Preliminary Investigations And <br /> Evaluations Of Underground Tank Saes— No Further Action Requests <br /> This report presents our understanding of existing conditions at the subject site The conclusions contained <br /> herein are based on the analytical results and professional judgment, which are in accordance with current <br /> standards of professional practice, no other warranty is expressed or implied SECOR assumes no liability for <br /> exploratory borings or data reported by other consultants or contractors <br /> Sincerely, <br /> SECOR International Incorporated <br /> Todd Brown Michael Stephens,if. HG, REAII <br /> Associate Geologist Senior Geologist <br /> TB/MS kf <br /> Attachments Figure 1 —Site Location Map <br /> Figure 2--Groundwater Elevation Contour Map—January 5, 2004 <br /> Figure 3—Dissolved Hydrocarbon Concentration Map—January 5, 2004 <br /> Figure 4--Site Pian Showing Remediation System Wells, Piping, and Treatment System <br /> Table 1 —Groundwater Potentiometnc Elevations <br /> Table 2—Groundwater Sample Analytical Results <br /> Table 3—Groundwater Analytical Results for Fuel Oxygenates <br /> Attachment 1 -- Field Data Sheets <br /> Attachment 2— Laboratory Analytical Report and Chain of Custody <br /> cc Mr Harlin Knoll, San Joaquin County Public Health Services <br /> Ms Elizabeth Thayer, California Regional Water Quality Control Board <br /> V Eotoo�� <br /> w �ILL e <br /> � ,tic No r��,211� • <br /> . • CVIVIED ING <br /> Q <br /> ENG�N� 2 <br /> I ITMe Oi1lLockefordlQMR512001-20041Locketord Ql04 Boc ATE OF CP��� SECOR Intemationallncorporeted <br />