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California Re oval Water Quality CAtrol Board <br /> ke <br /> C a Q Y 'd <br /> Central Valley Region ' <br /> Winston H.Hickox Sacramento Main Office Gray Davis <br /> Secretaryfor Internet Address: http://www.swrcb.ca.gov/—rwgcb5 Governor <br /> Environmental 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Protection Phone(916)255-3000•FAX(916)255-3015 <br /> 11 January 2001 <br /> Ms. Margaret Russell <br /> c/o Mr. John Welch <br /> P.O. Box 690757 <br /> Stockton, CA 95269 <br /> WORK PLAN FOR ADDITIONAL INVESTIGATION, FORMER KARLSON TRUCKING, <br /> MANTECA, SAN JOAQUIN COUNTY <br /> We have reviewed the 13 December 2000 Work Plan for Site Characterization, Third Event submitted <br /> by Geo-Phase Environmental for the former Karlson Trucking (KT) site in Manteca. The work plan <br /> proposes to collect soil and grab groundwater samples northwest and southwest of monitoring well <br /> (MW) 6 to define the lateral extent of soil and groundwater pollution by total petroleum hydrocarbons <br /> characterized in the diesel range. <br /> We hereby approve the work plan. Based on the schedule provided in the work plan, please submit the <br /> additional investigation report by 16 February 2001. <br /> If you have any questions, you may call me at (916) 255-3081 or e-mail at isorenp@rb5s.swrcb.ca.gov. <br /> P�S. ISO'�ENA <br /> Associate Engineer <br /> cc: Ms. Margaret Lagorio, San Joaquin County Public Health Services, Stockton <br /> Mr. Stephen M. Lankford, Geo-Phase Environmental Inc., Modesto <br /> California Environmental Protection Agency <br /> 0•a Recycled Paper <br />