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Table 1. Crawl-Space and Indoor Air Target Levels and Reporting Limits by TO-15 SIM <br /> Analyte I Tier 1 ESL Reporting Limita <br /> Volatile Organic Compounds by Method TO-15 SIM (pg/m3) <br /> 1,1,1-Trichloroethane 1000 0.11 <br /> 1,1,2,2-Tetrachloroethane 0.048 0.14 <br /> 1,1,2-Trichloroethane 0.18 0.11 <br /> 1,1-Dichloroethane 1.8 0.081 <br /> 1,1-Dichloroethene 73 0.040 <br /> 1,2-Dibromoethane EDB 0.0047 0.15 <br /> 1,2-Dichloroethane 0.11 0.081 <br /> Benzene 0.097 0.16 <br /> Carbon tetrachloride 0.067 0.13 <br /> Chloroethane 10,000 0.13 <br /> Chloroform 0.12 0.098 <br /> Chloromethane 94 0.10 <br /> cis-1,2-Dichloroethene 8.3 0.079 <br /> Dichlorodifluoromethane Freon 12 NS 0.099 <br /> Eth (benzene 1.1 0.087 <br /> Methyl tert Butyl Ether MTBE 11 0.36 <br /> o-X lene 100 0.087 <br /> /m-X lene 100 0.17 <br /> Tetrachloroethene 0.46 0.14 <br /> Toluene 310 0.075 <br /> Trans-1,2-dichloroethene 83 0.40 <br /> Trichloroethene 0.48 0.11 <br /> Vinyl chloride 0.0095 0.026 <br /> Notes: <br /> a.Base reporting limit(based on no dilution).Subject to change based on MDL studies. <br /> pg/m3=micrograms per cubic meter <br /> bold=reporting limit higher than ESL;all detections will be reported to the limit of detection <br /> DTSC=California Department of Toxic Substances Control <br /> ESL=environmental screening level <br /> NS=No Standard <br /> SIM=selective ion monitoring <br />