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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> ? —�f Donna Heran, REHS <br /> 1868 East Hazelton Avenue <br /> W Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> Robert McClellon, REHS <br /> Jeff Carruesco, REHS, RDI <br /> C4' .•....•�i`P Website: www.sjgov.org/ehd Kasey Foley,REHS <br /> <<F o R <br /> Phone: (209) 468-3420 Linda Turkatte, REHS <br /> Fax: (209) 464-0138 <br /> November 7, 2012 <br /> Messrs, Kirk Larson, PG, and Robert Trommer, CHG <br /> State Water Resources Control Board <br /> Division of Financial Assistance <br /> 1001 1 Street <br /> Sacramento CA 95814 <br /> Subject: 6732 Highway 88 E, Stockton, CA <br /> Annual Five-Year Review Update Response CUF Claim No. 13455 <br /> San Joaquin County Environmental Health Department (EHD) has received and reviewed the <br /> fifth annual five-year review update letter- dated July 2012 from Kirk Larson of the State Water <br /> Quality Control Board (SWQCB) Cleanup Fund (CUF) for the above-referenced site. The CUF <br /> recommends that the EHD consider the site for closure. <br /> The EHD recently received on GeoTracker the analytical results for three soil gas samples <br /> collected in August 2012 to evaluate the risk posed by vapor intrusion from residual impacted <br /> soil; all results appear to pass the Environmental Screening Levels (ESLs) posted by the San <br /> Francisco Bay Regional Water Quality control Board, and are inferred by the EHD to pose an <br /> acceptable level of health risk. As the vapor extraction appears to have reached its practicable <br /> limits and the impact to groundwater appears to be delineated, the EHD will direct preparation of <br /> a closure report with the soil gas survey report; anticipating favorable results, the EHD will <br /> consider and initiate the closure process. <br /> Questions or comments should be directed to Harlin Knoll at (209) 468-3442 or to Nuel <br /> Henderson at (209) 468-3436. <br /> Sincerely, <br /> Harlin Knoll, REHS Nuel Henderson, PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> 2012 Annual 5-Year Review Update Response CUF Claim No. 13455.doc <br />