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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Donna Heran,REHS <br /> Q. 600 East Main Street <br /> U) �< Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco,REHS,RDI <br /> ov.or <br /> Website: www.S /ehd Kasey Foley,REHS <br /> tiFoaN 19 5 <br /> Phone: (209)468-3420 <br /> Fax: (209) 464-0138 <br /> JuMy 19, 2010 Tart-rte"lo <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: June 2010 Draft Five-Year Review Recommendations, Caseworker Mike <br /> Infurna's Sites <br /> San Joaquin County Environmental Health Department (EHD) has received and reviewed the <br /> draft annual review five-year update letters from Kirk Larson of the State Water Quality Control <br /> Board (SWQCB) Cleanup Fund (CUF) for various sites referenced below and comments as <br /> follows. <br /> 14749 Thornton Road, Lodi, CA; Claim Number12992: The CUF noted that over one million <br /> dollars had been reimbursed on the site and that no active remediation had been implemented, <br /> and that five dozen monitoring locations were regularly monitored, creating much unnecessary <br /> data. The CUF recommended that the EHD require the responsible party (RP) to implement <br /> active remediation without delay The EHD agrees that active remediation is needed for the site <br /> and notes that soil vapor extraction (SVE) was implemented on the site in December 2009 and <br /> insitu air sparging (IAS) is expected to be activated in July 2010 Also, by letter dated 31 March <br /> 2009, the EHD had directed semi-annual monitoring for 7 wells, annual monitoring for 19 wells, <br /> and suspended monitoring of 35 wells. <br /> 1211 Turnpike Road, Stockton, CA; Claim Number 8753. The CUF recommended that the <br /> EHD consider this site for closure. A No Further Action Required request report has been <br /> recently received by the EHD for the site and the EHD will be considering the site for closure. <br /> 300 S. California Street, Stockton, CA; Claim Number 8492: The CUF recommended that the <br /> EHD require the RP to assess and implement an alternative groundwater remediation <br /> technology to achieve water quality objectives (WOOS) more rapidly Groundwater remediation <br /> on the site has not been active for some time as the RP claims that limited funds precludes <br /> replacing the granulated activated charcoal while continuing monitoring and lateral assessment. <br /> Two additional down-gradient monitoring wells were installed this month. The EHD agrees with <br /> the CUF recommendation and will direct the groundwater remediation system to be reactivated <br /> and other groundwater remediation technologies to be evaluated. <br /> 2315 N. California Street, Stockton, CA; Claim Number 11775: The CUF concurred with the <br /> EHD directive to conduct additional risk assessment of the site. The risk assessment recently <br /> June 2010 Annual 5-year Reviews - Mike's Sites.doc <br />