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Table A <br /> Yosemite Senior Housing Project Soil Gas Analytical Results <br /> Manteca,CA <br /> Project Number 9116A <br /> Indoor Air SLs Indoor Air SLs <br /> METHOD CONSTITUENT ASG-1-5.5 ASG-1-15 ASG-2-5.5 ASG-2-15 ASG-3-5.5 ASG-3-15 (ug/m3)-Residential Source Divided by AF(0.03) <br /> Air (ug/m3)** <br /> o-X lene <1.3 <1.3 <1.3 1.4 1.3 1.4 1.0E+02 nc R 3.33E+03 <br /> Styrene <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 9.4E+02 nc N3 3.13E+04 <br /> Bromoform <3.1 <3.1 <3.1 <3.1 <3.1 <3.1 2.6E+00 c N3 8.67E+01 <br /> 1,1,2,2-Tetrachloroethane <2.1 <2.1 <2.1 <2.1 <2.1 <2.1 4.8E-02 c N3 1.60E+00 <br /> 1,1,1,2-Tetrachloroethane <2.1 <2.1 <2.1 <2.1 <2.1 <2.1 3.8E-01 c N3 1.27E+01 <br /> 4-Eth ltoluene <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 NL <br /> 1,3,5-Trimeth lbenzene <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 6.3E+01 nc R 2.10E+03 <br /> TO-15 1,2,4-Trimeth lbenzene 2.3 2.7 2.0 2.2 <1.5 1.8 6.3E+01 nc R 2.10E+03 <br /> 1,3-Dichlorobenzene <1.8 <1.8 <1.8 <1.8 <1.8 <1.8 NL <br /> 1,4-Dichlorobenzene <1.8 <1.8 <1.8 <1.8 <1.8 <1.8 2.6E-01 c R 8.67E+00 <br /> al ha-Chlorotoluene <1.6 <1.6 <1.6 <1.6 <1.6 <1.6 NL <br /> 1,2-Dichlorobenzene <1.8 <1.8 <1.8 <1.8 <1.8 <1.8 2.1E+02 nc R 7.00E+03 <br /> 1,2,4-Trichlorobenzene <2.2 <2.2 <2.2 <2.2 <2.2 <2.2 3.8E-01 c N3 1.27E+01 <br /> Hexachlorobutadiene <3.2 <3.2 <3.2 <3.2 <3.2 <3.2 1.3E-01 c N3 4.33E+00 <br /> X lene(total) 1 2.7 1 <1.3 1 <1.3 1 4.6 1 4.5 1 4.8 1 1.0E+02 nc R_JJ 3.33E+03 <br /> Bold Red Text=Exceeds Indoor Air Screening Level(SL)Divided by Attenuation Factor(AF) <br /> All results are in ug/m3(micrograms per cubic meter) <br /> All samples were collected on May 2,2024 <br /> NL:Not listed <br /> --=Not applicable <br /> c=cancer;nc=anticancer <br /> R=US EPA Regional Screen Levels(RSL)Resident Air Table May 2024 Update.N3=Human Health Risk Assessment(HHRA)Note 3,June 2020 revised May 2022 <br /> SL=Screening Level <br /> -Detected soil gas concentrations are compared to attenuated indoor air screening levels for residential air.The attenuation factor(AF)for soil gas to indoor air is 0.03.The AF is divided into the indoor air SL for residential air for the respective <br /> constituent of concern. <br /> X:\Project\9000_prj\9116 HACSJ As-Needed Phase I&II ESAs\9116A Manteca Properties Phase I ESA\Phase II ESA\Reports\Phase II ESA\App D Tables\Results Tables-SIE.xIsTable A-Soil Gas 2 of 7 <br />