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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> .o Donna Heran,REHS <br /> r. 1868 East Hazelton Avenue <br /> N. Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> l Robert McClellon, REHS <br /> Jeff Carruesco,REHS,RDI <br /> Kasey <br /> oq <br /> Website: www.sjgov.org/ehd Linda Foley,RENS oRa`P Linda Turkatte,REHS <br /> Phone: (209)468-3420 Rodney Estrada,REHS <br /> Fax: (209)464-0138 Adrienne Ellsaesser,REHS <br /> September 10, 2013 <br /> Surinder Properties, LLC <br /> c/o Surinder P. and Karanti Singh <br /> 830 N. Wilson Way <br /> Stockton, CA 95205 <br /> Subject: TOP FILLING STATION LOP Site Code: 1294 <br /> 101 S. Wilson Way <br /> Stockton, CA <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed Soil Vapor and <br /> Groundwater Remediation Report Second Quarter 2013 (Report), dated August 26, 2013, <br /> submitted on your behalf by Advanced GeoEnvironmental, Inc., (AGE). In the Report, AGE <br /> recommends performance of a soil vapor extraction (SVE) rebound response test due to low <br /> extracted TPH-g concentrations and daily extraction rates currently encountered at the site. In <br /> addition, AGE recommends: <br /> 1) Suspension of the SVE operation for 90 days then resampling to confirm that no spike in <br /> TPH-g concentrations has occurred; <br /> 2) Continued operation of the groundwater extraction treatment (GWET) interim <br /> remediation system using on-site wells EW-1, VW-1 C, VW-2A and VW-3A; <br /> 3) Continued collection and analysis of monthly remediation grab groundwater samples <br /> from the influent, GAC-1 and effluent ports. <br /> The EHD approves the SVE rebound response test, suspension of the SVE operation, the <br /> resampling event, continued operation of the GWET, and continued collection and analysis of <br /> remediation grab groundwater samples. <br /> If you have any questions please contact Lisa Medina at (209) 468-3455 or by email at <br /> ImedinatD,�.sicehd.com. <br /> Lisa Medina, REHS Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: Jim Barton, CVRWQCB, 11020 Sun Center Drive #200, Rancho Cordova, CA 95670 <br /> Tim Cuellar, AGE, 837 Shaw Road, Stockton, CA 95215 <br />