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Mr. Donald Rodgers - 2 - 28 May 2009 <br /> 515 West Charter Way, Sto4n, San Joaquin County <br /> seven existing SVE treatment wells would be supplemented by additional SVE wells where <br /> needed to capture petroleum hydrocarbon vapors released by AS. Additional vapor monitoring <br /> wells may be necessary to determine whether soil vapor intrusion threatens nearby buildings. <br /> Comments-. <br /> It is our understanding that you are experiencing delays in receiving reimbursement from the <br /> State Water Board's UST Cleanup Fund, which is causing you financial difficulties. In order to <br /> help with some of your financial difficulties, and after review of your site data, I have determined <br /> that your case qualifies for reductions from quarterly to semi-annual and annual monitoring for <br /> specific wells. Please refer to the following table for changes in the monitoring well sampling <br /> frequency and to the required list of analyses for routine groundwater monitoring. <br /> Groundwater Monitoring Reductions Table, Ma 2009 <br /> Semi-annual Annual <br /> Well MVV-4RS, MW-4RD, VW-1 D, VW-2D, VW-3D, MW-7S, MW-1 R, MW-2R, <br /> IDs iMW-81, MW-91, MW-101, MW-111D, MW-12D, MW-3R, VW-4 <br /> j all new wells <br /> 1 — Semiannual sampling during second and fourth quarters for TPHg, benzene, toluene, ethybenzene, and xylenes. <br /> 2 —Annual sampling event during the fourth quarter to also include MTBE. <br /> 3—Annual sampling event during the fourth quarter for all analytes listed above. <br /> We suggest you discuss with Shaw this change of monitoring requirements, and explore other <br /> options to reduce your costs. <br /> The Report recommendations choosing SVE/AS as the remediation for the cleanup and to <br /> prepare a Final Remediation Plan .are conditionally approved. Please provide a schedule for <br /> submittal and implementation of the Final Remediation Plan by 30 June 2009. Upon our <br /> receipt and review of the schedule, you may request a meeting with us to discuss the proposed <br /> schedule and to provide further clarification concerning your financial situation at that time. <br /> If you have any questions, you may call me at (916) 464-4615 or email me at <br /> ibartonQwaterboards.ca.gov. <br /> James L. L. Barton, P.G. <br /> Engineering Geologist <br /> cc: Mr. Mark Owens, State Waterboard UST Cleanup Fund, Sacramento <br /> Ms. Margaret Lagorio, San Joaquin County Environmental Health Department, Stockton <br /> Mr. Charles Metzinger, Shaw Environmental, 1326 North Market Blvd., Sacramento <br /> 95834 <br />