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SECOR www secor corn <br /> INTERNATIONAL F <br /> ® INCORPORATED 3017 Kilgore Road Suite 100 <br /> Rancho Cordova CA 95670 <br /> 916-861 0400 TEL t <br /> r l 916-861 0430 FAX <br /> October 19, 2004 i <br /> Ms Margaret Lagorio NOV <br /> San Joaquin County Public Health Services Q ZQQ4 <br /> 304 East Weber Ave 3rd Floor ENVIRONMcNI HEALTH <br /> Stockton, CA 95201-0388 PERMIT/SERVICES <br /> RE Quarterly Summary Report-Third Quarter 2004 <br /> Request for SVE System Removal <br /> i <br /> SECOR Project No 77CP 60006 00 6981 <br /> Dear Ms Lagorio <br /> On behalf of ConocoPhillips, SECOR International Incorporated is forwarding the quarterly I <br /> summary report for the following location <br /> Service Station Location <br /> Former 76 Service Station#6981 4707 Pacific Avenue, Stockton, CA <br /> Request for SVE System Removal <br /> • The existing SVE system (blower and carbon) has been operated on a "pulse" mode since 1998 <br /> due to low Influent concentrations Recent SVE system performance operation data (Attachment <br /> B) indicates that SVE is no longer a cost effective remedial technology for the site Based on this <br /> data SECOR, on behalf of ConocoPhilllps, requests authorization to remove the existing SVE <br /> system The ozone sparge system will remain operating at the site <br /> TRUs. third quarter 2004 groundwater monitoring report is Included as Attachment A If you have <br /> questions or comments regarding this quarterly summary report, please do not hesitate to contact <br /> me at (916) 861-0400 <br /> Sincerely, <br /> SECOR Inter ational Incorporated <br /> Clinton Harms <br /> Associate Scientist <br /> Enclosure Quarterly Summary Report-Third Quarter 2004 <br /> Attachment A- TRC's, Quarterly Monitoring Report dated October 15, 2004 <br /> Attachment B-Quarterly Remedial Performance Summary <br /> Attachment C- Field Data Sheets <br /> Attachment D- Certified Analytical Reports and Chain of Custody <br /> Documentation <br /> cc Shelby Lathrop, ConocoPhlllips <br /> James Barton, RWQCB-Central Valley Region <br /> 1, <br />