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7.0 REFERENCES <br /> AM EC Geomatrix, Inc. (AM EC). 2009.Site Conceptual Model—January 2009 Update, Former Nestl6 Facility <br /> and Surrounding Area.January 30. <br /> Aptim Environmental & Infrastructure, LLC (APTIM). 2021.APTIM Management System (AMS). <br /> Central Valley Regional Water Quality Control Board letter to GeoTracker Case File, Site SL205012989, <br /> Former Nestl6 USA SUBJECT: TETRACHLOROETHENE (PCE) SOURCE INVESTIGATION FOR RIPON, SAN <br /> JOAQUIN COUNTY, CALIFORNIA 21 June 2021. <br /> California Environmental Protection Agency Department of Toxic Substances Control (DTSC). 2011. Final: <br /> Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air(Vapor Intrusion <br /> Guidance). October. http://www.handpmg.com/documents/DTSC/`20V1%2OGuidance%20 October%20 <br /> 2011.pdf <br /> California Department of Toxic Substances Control and California State Water Resources Control Boards <br /> (DTSC/CASWRCB). 2020. Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion. <br /> February. <br /> California Environmental Protection Agency, Department of Toxic Substances Control, Los Angeles <br /> Regional Water Quality Control Board, San Francisco Regional Water Quality Control Board (DTSC, <br /> LARWQCB and SFBRWQCB). 2015.Advisory,Active Soil Gas Investigations.July. <br /> California Regional Water Quality Control Board, San Francisco Bay Region. 2019. Environmental <br /> Screening Levels, ESL Workbook.July, <br /> https://www.waterboards.ca.gov/sanfranciscobay/water_issues/programs/ESL/ESL_Workbook_Interim <br /> %20Final-24Janl9—Revl%20(1).xlsx. <br /> Environmental Cost Management, Inc.(ECM). 2012. Investigation Report, Former Nestle' Inc. Facility. <br /> Ripon, CA. 29 March <br /> U.S. Environmental Protection Agency (EPA). 1996. Test Methods for Evaluating Solid Waste, Physical <br /> Chemical Methods, SW-846, Update lll. <br /> EPA. 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air- <br /> Second Edition. <br /> EPA. 2015. OSWER Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from <br /> Subsurface Vapor Sources to Indoor Air,June. <br /> FINAL RIPON PCE INVESTIGATION WORK PLAN.DOCX 7-1 1 PROJECT NO.631021512 <br />