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San Joaquin County I <br /> Environmental Health Department °Don�aOHeran, Rs <br /> 1868 East Hazelton Avenue <br /> (n: Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> y, Robert McClellon,REHS <br /> • - Jeff Carruesco, REHS,RDI <br /> Website: www.sjgov.org/ehd Kasey Foley, REHS <br /> C i F o R <br /> Phone: (209)468-3420 Linda Turkatte, REHS <br /> Fax: (209)464-0138 <br /> May 8, 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 #2413 <br /> Subject: 1403 Country Club Boulevard, Stockton, CA <br /> Annual Five-Year Review Update Recommendations April 2012 <br /> San Joaquin County Environmental Health Department (EHD) has received and reviewed the <br /> fifth annual five-year review update letter dated 19 April 2012 from Kirk Larson of the State <br /> Water Quality Control Board (SWQCB) Cleanup Fund (CUF) for the above-referenced site. The <br /> CUF recommends that active remediation by ozone injection continue and that additional plume <br /> definition was not necessary. <br /> By letter dated 28 February 2012, the EHD had directed the opposite course of action; the EHD <br /> had been informed that the ozone injection system had been shut down due to degradation of <br /> the system and that the consultant did not consider it to be cost-effective to repair the system for <br /> further use. The EHD approved shut-down of the oxygen injection system for rebound testing <br /> and directed installation of a previously approved CPT boring to delineate the down-gradient <br /> extent of the intensely TBA-impacted groundwater in the "C" groundwater zone. There is only <br /> one on-site C-zone well. The EHD will continue with the rebound testing, but based on the <br /> professional opinion provided by the Mr. Larson, the EHD will rescind the directive to install the <br /> CPT boring. Questions or comments should be directed to Lisa Medina at (209) 468-3455 or to <br /> Nuel Henderson at (209) 468-3436. <br /> Sincerely, <br /> Lisa Medina, REHS Nuel Henderson, PG <br /> Senior Registered Environmental Engineering Geologist <br /> Health Specialist <br /> 2012 Five-Year Review Update Resvonse CUF Claim No 2413.doc <br />