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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> �G Donna Heran,REHS <br /> 600 East Main Street <br /> PROGRAM COORDINATORS <br /> Stockton California 95202-3029 <br /> ` ' Robert McClellon, REHS <br /> �. Jeff Carruesco,REHS, RDI I <br /> • r - .• 'P Kasey Foley, REHS <br /> QtiFoar'� Website: www.sjgov.org/ehd Linda Turkatte, REHS <br /> Phone: (209)468.3420 <br /> Fax: (209) 464-0138 <br /> December 17, 2010 <br /> Ms Sandi Sarale <br /> P.O. Box 5066 <br /> Stockton, CA 95206 <br /> Subject: Sarale Farms <br /> 16500 W. Clifton Court Road <br /> Stockton, CA 95206 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed Feasibility Study <br /> Report (FSR), dated 05 August 2010 and Semi-Annual Ground Wafer Monitoring Report— July 2090 <br /> (GWMR), dated 11 November 2010, both prepared by Advanced GeoEnviron mental, Inc. (AGE), your <br /> consultant for the above-referenced site. In the FSR, AGE compared two remedial technologies <br /> thought to be applicable for your site for corrective action on impacted soil and two technologies to <br /> address impacted groundwater. <br /> AGE found the use of a product called RegenOx, an insitu chemical oxidation (ISCO) technology, to <br /> be potentially more cost effective than excavation to address impacted groundwater, and potentially <br /> more cost-effective for addressing impacted groundwater than pump and treat technologies. AGE <br /> recommended preparation of a work plan to pilot test the use of RegenOx on your site. The EHD <br /> approves this recommendation and directs submittal of the work plan to the EHD by February 18, <br /> 2010. <br /> Review of the GWMR and other site data leads the EHD to the conclusion that soil and groundwater <br /> impacted by contaminants released from the underground storage tank (UST) system formerly on <br /> your site have been adequately delineated in all directions and is now sufficiently characterized to <br /> justify preparation of a corrective action plan (CAP); therefore the EHD directs preparation of a CAP <br /> for this site to identify the most cost-effective remedial technology to address impacted media on your <br /> site. Submit the CAP to the -EHD within 90 days of completion of the RegenOx pilot test and <br /> incorporate the findings of the pilot test in the CAP. The EHD also recommends that natural <br /> attenuation be considered in the CAP as a potentially applicable technology for the site. if additional <br /> data is needed to complete the CAP, submit a work plan to acquire the additional data. Questions or <br /> comments may be directed to Nuel Henderson at (209) 468-3436. <br /> Sincerely, <br /> Nuel C. Henderson, Jr., PG Adrienne Ellsaesser, REHS <br /> Engineering Geologist Acting Program Coordinator <br /> C: James Barton, PG, CVRWQCB, 11020 Sun Center Dr. # 200, Rancho Cordova, CA 95670 <br /> Ally Colavita, Advanced GeoEnvironmental, Inc., 837 Shaw Road, Stockton, CA 95215 <br /> FS Comment and Directive Letter 1210 <br />