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S E C O R <br /> • Mr Mark Chandler <br /> September 16, 2004 <br /> Page 3 <br /> FORTHCOMING ACTIVITIES <br /> During the fourth quarter 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 <br /> January 2005 <br /> Per the San Joaquin County Public Health Services(SCPHS)approval letter dated July 21,2004,SECOR will <br /> advance confirmation sod borings in the area previously remediated by SVE once permits are approved <br /> SECOR will prepare a site conceptual model (SCM) to determine if the site qualifies for no further action <br /> (NFA)status If the site meets NFA requirements,SECOR will submit documentation requesting site closure, <br /> which will be prepared in accordance with guidelines presented in the Appendix B Th-Regional Board Staff <br /> Recommendation For Preliminary Investigations And Evaluations Of Underground Tank Sites--No Further <br /> 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 /> /;Zw�2 '2;?�) <br /> Todd Brown Michael Stephens, CEG, CHG, REAII <br /> Associate Geologist Senior Geologist <br /> TB/MS kf <br /> Attachments Figure 1 —Site Location Map <br /> Figure 2--Groundwater Elevation Contour Map—April 1, 2004 <br /> Figure 3—Dissolved Hydrocarbon Concentration Map—April 1, 2004 <br /> Figure 4—Site Plan Showing Remediation System Wells, Piping, and Treatment System <br /> Table 1 —Groundwater Potentiometric Elevations <br /> Table 2—Groundwater Sample Analytical Results <br /> Table 3—Groundwater Analytical Results for Fuel Oxygenates <br /> Attachment 1 — Field Data Sheets <.p GEOZO <br /> Attachment 2— Laboratory Analytical Report and Chain of Custody �� � G/ <br /> Attachment 3— Remediation System Performance Data ��� ed -31 StBPnens `rh <br /> C� �►chaell. <br /> cc Mr Harlin Knoll, San Joaquin County Public Health Services typ �G2 12 <br /> 1 <br /> Ms Elizabeth Thayer, California Regional Water Quality Control Board GER�1>1FD Q <br /> I\Tune OtllLockeford\QMRS0004\Lockeford Q3-04 doc SECOR lntematlona!Incorporated <br />