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EONuxo G.BRowx JR. <br /> i. °rUaw <br /> Mwrrxew floua,ouei <br /> Water Boards �/ °" �°~rw°•°'F° ° <br /> Central Valley Regional Water Quality Control Board <br /> 23 August 2012 <br /> Mr. Joe Niland <br /> Lincoln Center Environmental Trust <br /> c/o Geosyntec Consultants <br /> 3043 Gold Canal Drive, Suite 201 <br /> Rancho Cordova, CA 95670 <br /> COMMENTS ON PRE-DESIGN INVESTIGATION WORK PLAN— LINCOLN CENTER <br /> ENVIRONMENTAL TRUST, STOCKTON, SAN JOAQUIN COUNTY <br /> Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff has <br /> reviewed the report titled "Pre-Design Investigation Work Plan"(Plan) dated 12 June 2012 <br /> prepared by Geosyntec Consultants on behalf of the Lincoln Center Environmental Remediation <br /> Trust (Trust). Central Valley Water Board staff and the Trust met on 2 July 2012 to discuss the <br /> Plan. <br /> The Plan proposes to perform additional characterization of the down-gradient soils and <br /> groundwater in accordance with Table 1 (attached). A total of nine groundwater monitoring <br /> wells are proposed to be installed in the A and B zones down-gradient of the source area. Soil <br /> samples will be collected from the well borings and analyzed for geochemical characteristics. <br /> The Trust intends to use the collected data to prepare a remedial design for the down-gradient <br /> perchloroethene (PCE) impacts in groundwater. <br /> Central Valley Water Board staff and the Trust have prepared a Public Notice regarding the <br /> proposed work. The Trust has submitted a distribution list containing names and addresses that <br /> will receive the Notice. We will also post the Notice on our Geotracker website: <br /> http://geotracker.waterboards.ca.gov/profile report.as p?g lobal_id=SL205132997 <br /> Central Valley Water Board staff concurs with the Plan. Please submit a report of findings by <br /> 5 November 2012. Be sure to contact us 7 days prior to the start of fieldwork so that we have <br /> the opportunity to be present during the investigation. <br /> Feel free to contact me with any questions or concerns regarding this letter at 916.464.4682 or <br /> rcervantes(&waterboards.ca.g ov. <br /> — original signed by — <br /> Roberto Cervantes, PE <br /> Site Cleanup Program <br /> KAR, E. LONOLEY SCD. P.E..CHAIR I PAMELA C. CNEEOON P.E.. BCEE,EXECUTIVE OFFICER <br /> 11020 Sun Center Drive 4200.NancOo Cordova,CA 95010 1 www.waNrr wdi.ca.gov/centralvalky <br /> F.a n cvcrea�waca <br />