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Table 3:Detected VOC Concentrations in Soil Gas Sub-Slab and Calculated Indoor Air Concentrations <br /> iiNumber <br /> Sample With Highest Calculated ndustrial Number <br /> Detected Highest Detected Indoor Air Indoor <br /> Detectedi Concentration i Detected Contaminant I (Commercial/ <br /> i ' <br /> Concentration <br /> , <br /> PCE SG2 31300 165 2.08** 5 5 <br /> TCE SV3 350 17.5 <br /> Notes: <br /> *Calculated using Department of Toxic Substances Control's Attenuation Factor of 0.05 <br /> VOCs=volatile organic compounds <br /> lL / =micrograms per liter <br /> PCE=tetrachloroethene <br /> TCE=trichloroethene <br /> DCE=dichloroethene <br /> **DTSC Recommended Values from Human Health Risk Assessment(HHRA)Note Number 3,Table 3 -July 14,2014 <br /> ***RSL=Regional Screening Levels(United States Environmental Protection Agency Region 9 -May 2014) <br /> • <br /> Phase II Subsurface Investigation <br /> Tracy Corners Shopping Center <br /> 3225 North Tracy Boulevard <br /> Tracy,California 95376 <br /> Partner Project Number P14-129814.2 <br /> December 2014 <br />