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Table C-4:Screening Levels for Air Sample Analyses Geosyntec D Quality Assurance Project Plan consultants Park Woods Shopping Center Stockton,California DTSC DTSC Chemical Abstracts Modified SL Modified SL USEPA RSL USEPA RSL Analyte Service Registry Method for for Industrial for Residential for Industrial Number Residential Airy /rn3 Air(µg/m3) Air(µg/m3) Air (µg/m) (µg ) Ethylbenzene 100-41-4 TO15/TO-15 SIM -- -- 1.1 4.9 Styrene(vinylbenzene) 10042-5 TO15/TO-15 SIM 940 3900 100 440 Chloromethylbenzene(benzyl chloride) 10044-7 TO15/TO-15 SIM -- -- 0.057 0.25 n-Propylbenzene 103-65-1 TO15/TO-15 SIM -- -- 100 440 n-Butylbenzene 104-51-8 TO15/TO-15 SIM 210 880 -- -- p-Xylene(1,4-xylene) 10642-3 TO15/TO-15 SIM -- -- 10 44 p-Dichlorobenzene(1,4-dichlorobenzene) 10646-7 TO15/TO-15 SIM -- -- 0.26 1.1 1,2-Dibromoethane(ethylene dibromide) 106-934 TO15/TO-15 SIM 0.0047 0.02 0.0047 0.02 1,3-Butadiene(butadiene) 106-99-0 TO15/TO-15 SIM 0.017 2.1 0.094 0.41 2-Propenal(acrolein) 107-02-8 TO15/TO-15 SIM -- -- 0.0021 0.0088 1,2-Dichloroethane(ethylene dichloride) 107-06-2 TO15/TO-15 SIM 0.11 0.47 2-Propenenitrile(acrylonitrile) 107-13-1 TO15/TO-15 SIM 0.041 0.18 Ethenyl acetate(vinyl acetate) 108-05-4 TO15/TO-15 SIM 21 88 4-Methyl-2-pentanone(methyl isobutyl ketone,MIBK) 108-10-1 TO15/TO-15 SIM 310 1300 Isopropyl ether(diisopropyl ether) 108-20-3 TO15/TO-15 SIM 73 310 m-Xylene(1,3-xylene) 108-38-3 TO15/TO-15 SIM 10 44 1,3,5-Trimethylbenzene(mesitylene) 108-67-8 TO15/TO-15 SIM -- -- 6.3 26 Toluene(methylbenzene) 108-88-3 TO15/TO-15 SIM 310 1300 520 2200 Chlorobenzene 108-90-7 TO15/TO-15 SIM -- -- 5.2 22 Tetrahydrofuran(oxolane) 109-99-9 TO15/TO-15 SIM 210 880 Hexane 110-54-3 TO15/TO-15 SIM 73 310 Cyclohexane 110-82-7 TO15/TO-15 SIM 630 2600 Propene(propylene) 115-07-1 TO15/TO-15 SIM -- -- 310 1300 1,2,4-Trichlorobenzene 120-82-1 TO15/TO-15 SIM 0.38 1.7 0.21 0.88 1,4-Dioxane(p-dioxane) 123-91-1 TO15/TO-15 SIM -- -- 0.56 2.5 Dibromochloromethane(chlorodibromomethane) 124-48-1 TO15/TO-15 SIM 0.13 0.58 -- -- 2-Chloro-1,3-butadiene(chloroprene) 126-99-8 TO15/TO-15 SIM 0.0094 0.041 Tetrachloroethene(perchloroethylene) 127-18-4 TO15/TO-15 SIM 0.46 2 4.2 18 sec-Butylbenzene(2-phenylbutane) 135-98-8 TO15/TO-15 SIM 420 1800 -- -- Ethyl acetate 141-78-6 TO15/TO-15 SIM -- -- 7.3 31 Heptane 142-82-5 TO15/TO-15 SIM -- -- 42 180 cis-1,2-Dichloroethene(cis-1,2-dichloroethylene) 156-59-2 TO15/TO-15 SIM 8.3 35 -- -- trans-1,2-Dichloroethene(trans-1,2-dichloroethylene) 156-60-5 TO15/TO-15 SIM 83 350 4.2 18 2-Methoxy-2-methylpropane(methyl tert-butyl ether,MTBE) 1634-04-4 TO15/TO-15 SIM -- -- 11 47 Carbon tetrachloride(tetrachloromethane) 56-23-5 TO15/TO-15 SIM 0.47 2 0.47 2 2-Hexanone(methyl butyl ketone,MBK) 591-78-6 TO15/TO-15 SIM -- -- 3.1 13 1,1,1,2-Tetrachloroethane 630-20-6 TO15/TO-15 SIM 0.38 1.7 0.38 1.7 2-Ethoxy-2-methylpropane(ethyl tert-butyl ether,ETBE) 637-92-3 TO15/TO-15 SIM -- -- 35 150 Methanol(methyl alcohol) 67-56-1 TO15/TO-15 SIM 2100 8800 2-Propanol(isopropanol) 67-63-0 TO15/TO-15 SIM 21 88 Trichloromethane(chloroform) 67-66-3 TO15/TO-15 SIM 0.12 0.53 Page 1 of 3