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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> r. 1868 East Hazelton Avenue Donna Heran,REHS <br /> cr '� <br /> N � :{ Stockton, California 95205-6232 PROGRAM COORDINATORSRobert McClellon,REHS <br /> Jeff Carruesco,REHS, RDI <br /> �;.. p Kasey Foley,REHS <br /> Website: www.sjgov.org/ehd Linda Turkatte, REHS <br /> Phone: (209) 468-3420 <br /> Fax: (209) 464-0138 <br /> July 23, 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 CUF Claim No. 18428 <br /> Subject: 2224 Manthey Road, Stockton, CA <br /> First Five-Year Review Recommendations July 2012 <br /> San Joaquin County Environmental Health Department (EHD) has received and reviewed the <br /> first five-year review letter stamp-dated 05 March 2012 from Kirk Larson of the State Water <br /> Resources Control Board (SWRCB) Cleanup Fund (CUF) for the above-referenced site. The <br /> CUF concurred with the EHD that active remediation should commence to reduce contaminant <br /> mass in the source area to achieve water quality objectives in a timely manner. <br /> Based on the reported results of a soil vapor extraction (SVE) pilot test, the EHD directed by <br /> letter dated 16 July 2012 preparation of a work plan to install an SVE system and one additional <br /> SVE well to initiate site remediation. The EHD recommended postponing the pilot test of ozone <br /> injection and further lateral characterization of the plume, pending evaluation of the SVE system <br /> performance and its effect on impacted groundwater. The EHD also reduced the monitoring <br /> requirements for three new monitoring wells. <br /> Questions or comments should be directed to Vicki McCartney at (209) 468-9852 or to Nuel <br /> Henderson at (209) 468-3436. <br /> Sincerely, <br /> Vicki McCartney, REHS Nuel Henderson, PG <br /> Senior Registered Environmental Engineering Geologist <br /> Health Specialist <br /> 2011 Five-Year Review Comment Letter CUF No 18428.doc <br />