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California R%ional Water Qualityiontrol Board <br /> • Central Valley Region b <br /> Winston H.Hickox Steven T.Butler,Chair Gray Davis <br /> Secretan•for Sacramento Main Office Governor <br /> Environmental Intemet Address:http://w .sw b.ca.gov/—mgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 9 August 1999 <br /> Mr. George Pfandler <br /> Continental Grain Company <br /> North American Grain Division <br /> 222 South Riverside Plaza, Suite 1100 <br /> Chicago, IL 60606 <br /> SOIL AND GROUNDWATER INVESTIGATION WORK PLANAPPRO VAL, CONTINENTAL GRAIN <br /> COMPANY, 9504 S. HARLAN ROAD, FRENCH CAMP, SAN JOAQUIN COUNTY <br /> I have reviewed the 23 July 1999 Soil and Groundwater Investigation Work Plan (work plan) submitted by <br /> Metcalf&Eddy, Inc. for Continental Grain's French Camp Elevator facility (site). The work plan proposes <br /> to further characterize carbon tetrachloride and chloroform detected in soil and groundwater beneath the site <br /> by: <br /> 1. Advancing six CPT borings to 180 feet below the ground surface. The CPT information will be used to <br /> identify the number and continuity of water-bearing zones beneath the site. <br /> 2. Collecting undisturbed soil samples at 5-foot intervals to the water table at six potential source locations. <br /> Between two and four soil samples will be analyzed for volatile organic compounds at each sampling <br /> location. <br /> 3. Collecting groundwater samples from various water-bearing zones upgradient from the potential source <br /> area to evaluate the potential for a possible upgradient source of contaminants to the site. <br /> We hereby accept the work plan. Work outlined in the work plan shall be completed and a Soil and <br /> Groundwater report which includes recommendations for further investigation submitted to the Regional <br /> Board by 19 November 1999. Additionally, a work plan for site assessment prepared in general accordance <br /> with the attached outline will be required by 3 December 1999. Since groundwater assessment to this point <br /> has only included reconnaissance (Hydropunch®) sampling,the work plan shall include a proposal for <br /> groundwater monitoring well installation. <br /> If you have any questions regarding this project, you may call me at(916) 255-3077. <br /> J MELLO <br /> Asso fate Engineering Geolo ist <br /> Attachment <br /> cc: Linda Huff, Huff&Huff, LaGrange <br /> Joe Weidmann, Metcalf&Eddy, Santa Barbara <br /> California Environmental Protection Agency <br /> pro Recycled Paper ' <br />