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" ' HEALTH SERVICESPUBLIC <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D.,M.P.H:, Health Officer <br /> ��F20R� <br /> 304 East Weber Avenue,Third Floor• Stockton, CA 95202 <br /> 209/468-3420 <br /> PAT O'ROURKE <br /> BANK OF STOCKTON <br /> 660 N MAIN STREET <br /> MANTECA CA 95336 <br /> RE: Former Western Lift Site Code: #1087 <br /> WORKPLAN: Remedial Action Feasibility Testing <br /> DATED: October 30,2001 <br /> PREPARED BY:Geo-Phase Environmental <br /> APPROVED: <br /> DISAPPR <br /> ADDENDUffNED: <br /> EDED:E <br /> 1 Submit bv: <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN[H&S 25299.37,subd(c)(3)1: <br /> 1. Complete a well receptor survey with a 2000 foot radius from the source of contamination. <br /> 2. Install one vapor extraction well and one'air sparge well. <br /> 3. Conduct a vapor extraction test with air sparging. <br /> 4. Prepare a feasibility report which evaluates vapor extraction and other remedial alternatives. <br /> 5. Continue groundwater monitoring and sampling of all monitoring wells. <br /> COMMENTS AND CONDITIONS: <br /> 1. Secure all required EHD permits prior to installation of wells. <br /> 2. Notify SJVUAPC D prior to vapor extraction testing. <br /> 3. Submit all Quarterly Monitoring Reports and a Feasibility Study Report with recommendations. <br /> 4. Obtain USTCFP preapproval of expenditures prior to implementation. <br /> DATED �d'1 SSI�I BY <br /> Harlin KnollSenior RENS (209)468-3442 <br /> cc: Geo-Phase <br /> I <br /> A Division of San Joaquin County Health Care Services <br />