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7 <br /> Workplan for Soil Gas Study—Subslab Sampling Cardno� <br /> 807 N. Hunter Street Stockton,California <br /> November 25,2014 ATC <br /> Shaping the Future <br /> REFERENCES <br /> California Environmental Protection Agency, Draft Advisory — Active Soil Gas Investigations, <br /> dated March 2010. <br /> California Environmental Protection Agency, Use of California Human Health Screening Levels <br /> (CHHSLs) in Evaluation of Contaminated Properties, dated January 2005. <br /> California Regional Water Quality Control Board, San Francisco Bay Region, Screening For-Environmental <br /> Concerns at Sites with Contaminated Soil and Groundwater, Interim Final,dated November 2007. <br /> Department of Toxic .Substances Control and Los Angeles Regional Water Quality Control <br /> Board, Advisory-Active Soil Gas Investigations, dated April 2012. <br /> Department of Toxic Substances Control and Los Angeles Regional Water Quality Control <br /> Board, Final — Guidance for the Evaluation and Mitigation of Subsurface Vapor <br /> Intrusion to Indoor Air, dated October 2011. <br /> www.cardnoatc.com <br />