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TABLE E-3. INDOOR AIR SCREENING LEVELS (volatile chemicals only) Health-Based Screening Levels 5D%Odor Unit Risk Reference Residential Exposure Commercialllndustrial Exposure Recognition Factor Concentration Lowest n oor Air IndoorAir Qwest —Indoor Air Indoor Air Threshold Physical URF RIC Residential (carcinogens) (noncarcmogens) Cil (carcinogens) (noncarclnogens) (Table H-2) CHEMICAL PARAMETER State (uglm')' (uglm') (uglm') (uglm' ' 3 ! (u9lm) (uglm_) (ug)m,) (uglmr) {uglm) METHOXYCHLOR NV S METHYLENE CHLORIDE V L 1 OE-06 3 0E+03 2 4E+00 2 4E+0o 6 3E+02 4 tE+00 4 1E+00 a 8E+02 5 6011+05 METHYL ETHYL KETONE V L 1 0E+03 21 E+02 2 1 E+02 3 0E+02 1 3 OE+02 3 20E+04 METHYL ISOBUTYL KETONE V L 8 1 E+01 1 7E+01 1 7E+01 2 4E+01 2 4E+01 4 20E+02 METHYL MERCURY NV S METHYLNAPHTHALENE(total 1 &2-) V I S 1 4E+02 2 9E+01 2 9E+01 4 1E+01 4 1E+01 6 60E+01 METHYL TERT BUTYL ETHER V I L 2 6E-07 8 OE+03 9 411+00 9 4E+00 1 7E+03 1 6E+01 1 6E+01 23E403 5 30E+02 MOLYBDENUM NV S NAPHTHALENE V S 3 4E 05 9 0E+00 7 1E-02 7 1 E-02 1 9E+00 1 2E-01 1 2E-01 2 6E+00 4 40E+02 NICKEL NV s PENTACHLOROPHENOL NV S PERCHLORATE NV S PHENANTHRENE V I S 1 4E+02 2 911+011 29E+01 4 1E+01 4 1E+01 5 50E+01 PHENOL NV S 158E+02 POLYCHLORINATED BIPHENYLS(PCBs) NV S PYRENE V 5 1 1E+02 2 2E+01 2 2E+01 3 tE+01 3 1E+01 SELENIUM NV S SILVER NV S STYRENE V L 10E+03 21E+02 21E+02 3OE+02 30E+02 136E+03 tert-BUTYL ALCOHOL V L 94E-07 2 611+00 2 6E+00 4 3E+00 4 3E+00 TETRACHLOROETHANE 1 1 1 2 V L 7 4E-M 1 1E+02 3 3E-01 3 3E-01 2 2E+01 5 5E-01 5 5E-01 3 111+01 ETRACHLOROETHANE 1 12 2- V L 5 7E-05 2 1E+02 4 3E-02 4 3E 02 4 4E+01 7 2E 02 7 2E 02 6 iE+01 1 05E+04 TETRACHLOROETHYLENE V L 6 0E 06 3 5E+01 4 111-01 4 1 E-01 7 3E+00 6 8E 01 6 BE-01 1 0E+01 3 17E+04 THALLIUM NV S TOLUENE V L 3 011+02 6 3E+01 6 3E+01 8 8E+01 8 8E+01 3 00E+04 TOXAPHENE NV S PH(gasahnes) V L 4 9E+01 2 6E+01 2 6E+01 3 6E+01 3 6E+01 1 00E+02 PH(middle distillates) V L 4 9E+01 2 8E+01 —2-6E+01 3 611+01 3 6E+01 1 00E+03 TPH(residual fuels) NV US 1CHLOROBENZENE 124- V L 3 5E+00 7 3E-01 7 3E 01 1 0E+00 1 0E+00 2 20E+04 TRICHLOROETHANE 1 1 1 V L 2 2E+03 4 6E+02 4 8E+02 6 4E+02 6 4E+02 6 51E+04 TRICHLOROETHANE 1 1 2- V L 1 6E-05 1 4E+D1 1 5E-01 1 5E-01 2 9E+00 2 5E 01 2 5E-01 4 1E+00 TRICHLOROETHYLENE V L 2 OE 06 6 OE+02 1 2E+00 1 2E+00 1 2E+02 2 0E+00 2 0E+00 I 1 7E+02 1 36E+06 TRICHLOROPHENOL,2 4,5- V S 3 5E+02 7 3E+01 7 3E+Ot t 0E+02 1 OE+02 TRICHLOROPHENOL 2 4 6- NV S 3 ODE-01 11VANADIUM NV S INTERIM FINAL-February 2005 SF Bay RWQCB Page 3 of 4 Table E-3 (indoor Air Goals)