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l\� Department of Toxic Substances Control lam- Department of Toxic Substances Control <br /> Meredith Wiliams,Ph.D. v Meredith Williams,Ph.D. <br /> JneC Blunronhle arvin Nvwsam <br /> scaemn ror Director gwemor J.Soe .WryNr:le Director <br /> Bent Cal Center Drive r.nWl mr a covemo um <br /> EmlronmeMel Pmmmm Sacramento,California 95826320p Environmenml ProteNon a Cal Cantor Drive <br /> Sacramento Cal'rfomia 95826-3200 <br /> April 16,2020 <br /> !� Via E-Mail Only MEMORANDUM <br /> Mr. Stuart Sobek TO: Cindy Chain-Britton <br /> P.O. Box 370298 Hazardous Substance Engineer <br /> Las Vegas, Nevada 89137 San Joaquin Branch(Sacramento) <br /> StuaM780leamail.com Site Mitigation and Restoration Program <br /> ADDITIONAL SOIL VAPOR INVESTIGATION WORKPLAN—TRACY CORNER FROM: Dawn L. Sascomb <br /> SHOPPING CENTER,TRACY, CALIFORNIA Engineering Geologist <br /> Dear Mr.Sobek: Sacramento Geological Services Unit <br /> Brownfields and Environmental Restoration Program <br /> The department of Toxic Substances Control(DTSC) has reviewed Additional Soil Vapor REVIEWER: Mark Edwards, PG#9363 �gnW.aF <br /> Investigation Workplan(the Workplan),prepared by Partner Engineering and Science, Inc. q5 4 <br /> (Partner)on February 7,2020, DTSC has expressed the importance of prioritizing collection Senior Engineering Geologist oR� OC <br /> of offshe soil vapor samples in the remaining steps to complete characterization. DTSC Sacramento Geological Services Unit <br /> recommends that the objectives of this work plan be broadened to include the overall goals Site Mitigation and Restoration Program me e s <br /> of delineating the soil vapor plume,evaluating potential threats beyond the site's property <br /> line,and collection of data to support risk assessment and remedy selection. DTSC's other DATE: April 2,2020 <br /> comments are attached. Please revise the Workplan according to DTSC's J}$F OF cA�t <br /> comments/recommendations and submit the revised final Workplan in 30 days. SUBJECT: Continued Soil Vapor Plume Delineation <br /> Tracy Comers Shopping Center(Quality Cleaners) <br /> If you would find helpful, DTSC is available to have a conference call among all parties to 3225 North Tracy Boulevard <br /> discuss comment resolution before Partner prepares the final Additional Soil Vapor Tracy, San Joaquin County, California <br /> Investigation Workplan on your behalf. Project No. 12018/102262-11/20064380 <br /> If you have any questions regarding DTSC's comments/recommendations, please contact <br /> me at(916)225-3851,or cindv.chain-britton(o>dtsc.m.00v. DOCUMENT REVIEWED <br /> Sincerely, Draft Workplan for Additional Soil Vapor Investigation Tracy Comers Shoopino Center, <br /> prepared by Partner Engineering and Science, Inc, dated February 7, 2020(Workplan) <br /> The Geological Services Unit(GSU)of the Department of Toxic Substances Control <br /> Cindy Chain-Britton (DTSC) reviewed the above-referenced Report and prepared the following comments <br /> Project Manager and recommendations. If <br /> Sacramento Responsible Party Unit You have any questions regarding this memorandum, please <br /> Site Mitigation and Restoration Program contact meat(916)255-3556 or tlawn.bascombfddtsace.pov <br /> Attachment <br /> e Pr d on Recycled Pnwr <br /> e Pr1n:ed w Rotydee Pa,r <br />