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San Joaquin County <br /> °"'" Environmental Health ®epartment DIRECTOR <br /> Donna Heran,REHS <br /> ?; 600 East Main Street <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco,RENS,RDI <br /> C Q Website: www.sjgov.org/ehd Kasey Foley,RENS <br /> �4./FOR Phone: (209) 468-3420 Linda Turkatte,REHS <br /> Fax: (209) 464-0138 <br /> December 27, 2011 <br /> Mess,-s. Kirk Larson, PG, and Robert Trommer, CHG <br /> State Water Resources Control Board <br /> Division of Financial Assistance <br /> 1001 i _Street <br /> -rare anti`. CA 95814 <br /> ` ul,cct:: 1675 Eleventh St. `JV., Tracy, CA <br /> Annual Five-Year Review Update Response CUF Claim # 8590 <br /> Sar• -,')aquin County Environmental Health Department (EHD) has received and reviewed the <br /> anr;.al five-year revic°w update letter dated 07 November 2011 from Kirk Larson, o the State <br /> Wat:! ?esources Control Board (SWRCB) CJeanL,p Fund (CUF) for the above-referenced site. <br /> Thio t1JF recommended that the EHD review the sire for closure. <br /> The 10 had been cc.n::erned about a potential vapor intrusion problem identified in a 2007 <br /> reps,'' n a site invesLgation that included two soil gas samples, the resultant chemical analyses <br /> aro . _i,V, calculated cancer risk and health hazard index that exceeded accepted standards. <br /> Sinfae, then, three potential remedial technologies have been, field tested or bench-scale tested <br /> to identify the cosi-effective methodology for reducing the vapor intrusion potential. The EHD <br /> has reevaluated the 2007 report and questions some of the assumptions utilized for"determining <br /> the cancer risk and health hazard index quotient. The FHD vviil have the results reevaluated by <br /> the responsible party and request reporting the firldinns in a no further action request if <br /> appropriate- <br /> Questions or comments should be directed to Vicki McCartney at (209) 458-•9852 or to We <br /> Henderson at (209) 463-3436 <br /> Sincerely, <br /> Victoria L. McCartney, REHS Nuel Henderson, PG <br /> Senior Registered Envlropmental Health Engineering Geologist <br /> I Spe:iaiist <br /> i <br /> I <br /> I <br /> ii 2011 Five-Year Review Update Response C!F (Maim No 8590.doc <br /> i <br /> I <br />