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TABLE 4 <br /> SUMMARY OF SOIL VAPOR SAMPLE RESULTS FOR VOCS <br /> INDUSTRIAL <br /> Sample RESIDENTIAL COMMERCIAL SB1-SV SB2-SV SB3-SV <br /> Date Collected SOIL GAS SL °/ SOIL GAS SL °/ 08/06/21 08/06/21 08/06/21 <br /> Constituent -------------------------------------------µg/m -------------------------------------------- <br /> 2-Propanol (Isopropyl alcohol) NP NP 20.9 117 93.2 <br /> Propene NP NP 61.6 212 164 <br /> Styrene 31,000 130,000 3.91 7.53 3.08 <br /> 1,1,2,2-Tetrachloroethane 1.6 7 ND ND ND <br /> Tetrahydrofuran NP NP 9.50 32.4 28.0 <br /> Tetrachloroethene 15 67 2.21 3.50 ND <br /> Toluene 10,000 44,000 41.1 94.2 17.4 <br /> 1,1,1-Trichloroethane 35,000 150,000 ND ND ND <br /> 1,1,2-Trichloroethane 5.8 26 ND ND ND <br /> Trichloroethene 16 100 ND ND ND <br /> 1,1,2-trichloro-1,2,2-trifluoroethane(CFC 113) NP NP ND ND ND <br /> 1,2-Dichlorotetrafluoroethane NP NP ND 1.94 ND <br /> Trichlorofluoromethane NP NP 1.44 1.41 1.24 <br /> 1,3,5-Tri methyl benzene NP NP 11.7 31.0 1.20 <br /> 1,2,4-Tri methyl benzene NP NP 35.0 90.3 3.37 <br /> 1,2,4-Trichlorobenzene 70 290 ND ND ND <br /> 2,2,4-Trimethylpentane NP NP 17.1 40.5 ND <br /> Vinyl acetate NP NP ND ND ND <br /> Vinyl chloride 0.32 5.2 ND ND ND <br /> Vinyl Bromide NP NP ND ND ND <br /> m,p-Xylene 3,500 15,000 68.5 158 8.84 <br /> o-Xylene 3,500 15,000 27.6 64.6 3.10 <br /> Notes: <br /> Soil vapor VOCs concentrations analyzed via EPA Method TO-15. <br /> Bold indicates result above screening level criteria. <br /> a/Refers to San Francisco Bay Regional Water Quality Control Board Environmental Screening Levels(ESL),January 2019. <br /> TPH =Total Petrolium Hydrocarbons <br /> GRO =Gasoline Range Organics <br /> NP = No relevant standard published <br /> ND=Constituent not detected <br /> NA= Constituent not analyzed <br /> 202107-8656 Phase II Report Tables <br /> 2546 Turnpike Road,Stockton, CA Page 6 of 10 <br />