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TABLE 1. ENVIRONMENTAL SCREENING LEVELS (ESLs) <br /> Indoor Air and Soil Gas <br /> (Vapor Intrusion Concerns) <br /> INDOOR AIR 2SHALLOW SOIL GAS <br /> SCREENING LEVELS SCREENING LEVELS <br /> Commercial/ ommeraa <br /> 'Residential Industrial 'Residential Industrial <br /> Land Use Land Use Only Land Use Land Use Only <br /> CHEMICAL PARAMETER (ug/m3) (ug/m) (ug/m3) (ug/m) <br /> MOLYBDENUM <br /> NAPHTHALENE 7.1 E-02 1.2E-01 7.1 E+01 2.4E+02 <br /> NICKEL <br /> PENTACHLOROPHENOL <br /> PERCHLORATE <br /> PHENANTHRENE 2.9E+01 4.1E+01 2.9E+04 8.2E+04 <br /> PHENOL <br /> POLYCHLORINATED BIPHENYLS(PCBs) <br /> PYRENE 2.2E+01 3.1E+01 2.2E+04 6.1 E+04 <br /> SELENIUM <br /> SILVER <br /> STYRENE 2.1 E+02 3.0E+02 2.1 E+05 5.9E+05 <br /> tert-BUTYL ALCOHOL 2.6E+00 4.3E+00 2.6E+03 8.7E+03 <br /> TETRACHLOROETHANE, 1,1,1,2- 3.3E-01 5.5E-01 3.3E+02 1.1E+03 <br /> TETRACHLOROETHANE, 1,1,2,2- 4.3E-02 7.2E-02 4.3E+01 1.4E+02 <br /> TETRACHLOROETHYLENE 4.1E-01 6.8E-01 4.1 E+02 1.4E+03 <br /> THALLIUM <br /> TOLUENE 6.3E+01 8.8E+01 6.3E+04 1.8E+05 <br /> TOXAPHENE <br /> TPH(gasolines) 2.6E+01 3.6E+01 2.6E+04 7.2E+04 <br /> TPH(middle distillates) 2.6E+01 3.6E+01 2.6E+04 7.2E+04 <br /> TPH(residual fuels) <br /> TRICHLOROBENZENE, 1,2,4- 7.3E-01 1.0E+00 7.3E+02 2.0E+03 <br /> TRICHLOROETHANE, 1,1,1- 4.6E+02 6.4E+02 4.6E+05 1.3E+06 <br /> TRICHLOROETHANE, 1,1,2- 1.5E-01 2.5E-01 1.5E+02 5.0E+02 <br /> TRICHLOROETHYLENE 1.2E+00 2.0E+00 1.2E+03 4.1 E+03 <br /> TRICHLOROPHENOL,2,4,5- 7.3E+01 1.0E+02 7.3E+04 2.0E+05 <br /> TRICHLOROPHENOL,2,4,6- <br /> VANADIUM <br /> VINYL CHLORIDE 3.2E-02 5.3E-02 3.2E+01 1.1E+02 <br /> XYLENES 1.5E+02 2.0E+02 1.5E+05 4.1 E+05 <br /> ZINC <br /> Source: INTERIM FINAL- February 2005 <br /> SF Bay Regional Water Quality Control Board Page 3 of 4 <br />