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California Ronal Water Quality Control Board <br /> Central Valley Region <br /> Winston H.Hickoz Steven T.Butler,Chair <br /> Secretaryfor _ _ Gray Davis <br /> Environmental Sacramento Main Office Governor <br /> Protection Internet Address:http://w .sw eb.ca.govi— gcb5 <br /> 3443 Routier Road,Suite A,phone 916 255-3000-FAXto9 6a1255-3015�r300B <br /> 13 December 1999 <br /> Mr. George Handler <br /> Continental Grain Company <br /> North American Grain Division <br /> 222 South Riverside Plaza, Suite 1100 <br /> Chicago, IL 60606 <br /> SITE CHARACTERIZATION WORK PLANAPPRO VAL, CONTINENTAL GRAIN COMPANY, <br /> 9504 S. HARLANROAD, FRENCH CAMP, SAN JOAQUIN COUNTY <br /> I have reviewed the 10 December 1999 Site Characterization Work Plan (work plan) submitted by Metcalf <br /> &Eddy, Inc. for the ContiGroup Companies, Inc. (CGCI) French Camp Elevator facility(site). The work <br /> plan proposes to further characterize carbon tetrachloride and chloroform detected in soil and groundwater <br /> beneath the site by installing five monitoring well clusters (two wells at each location). One well at each <br /> location will be screened within a water-bearing zone at approximately 25 feet below the ground surface <br /> (bgs)with the other screened at approximately 65 to 75 feet bgs. <br /> We hereby accept the work plan on the condition that the screen intervals do not exceed 15 feet on any <br /> of the groundwater monitoring wells. CGCI shall complete work outlined in the work plan and submit a <br /> Soil and Groundwater Report by 27 March 2000. CGCI should be working toward defining <br /> contamination sufficiently to devise an interim remedial action plan (IRAP) for soil and shallow <br /> groundwater. The.Soil and Groundwater Report should include recommendations for additional <br /> investigation, if needed, to define the extent of contaminants in soil and shallow groundwater. If <br /> additional investigation of soil and shallow groundwater is not recommended, the Soil and Groundwater <br /> Report shall include a schedule for submittal of an IR.AP. <br /> If you have any questions regarding this project,you may call me at(916) 255-3077. <br /> S PH E. LLO <br /> As ociate Engineering eol gist <br /> cc: Mr. Jeff Wong, San Joaquin County Health Department, Stockton <br /> Ms. Linda Huff, Huff&Huff, LaGrange <br /> Mr. Joe Weidmann, Metcalf& Eddy, Santa Barbara <br /> California Environmental Protection Agency <br /> Qa Recycled Paper <br />