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TABLE E-'la GROUNDWATER SCREENING LEVELS FOR EVALUATION OF POTENTIAL VAPOR INTRUSION CONCERNS (volatile chemicals only) est eni acommerclaill rlausiRal Land Use Land Use Vadose-Zone soil Type Vadose-Zone Sell Type High tow/Moderate High LowiModerate Physical Permeability Permeability Permeability Permeability CHEMICAL PARAMETER State OWL) (uglL) (uglL) (uglL) HEXACHLOROBENZENE NVI S HEXACHLOROBUTADIENE NVI S HEXACHLOROCYCLOHEXANE(gamma)LINDANE NV S HEXACHLOROETHANE NVI S INDENO(1 2 3-cd)PYRENE NV S LEAD NV S MERCURY V S (Use Sall gas) (Use soil gas) (Use sod gas) (Use sod as) METHOXYCHLOR NV S METHYLENE CHLORIDE V L 2 4E+03 7 OE+D3 8 1 E+03 2 4E+04 ffiMETHYL ETHYL KETONE V L 24E+07 1 9E+{}7 6 BE+07 5 4E+07 METHYL ISOBUTYL KETONE V L 3 OE+06 2 3E+06 8 4E+06 6 5E+06 METHYLMERCURY NV S METHYLNAPHTHALENE(total 1-$2-) V 5 2 fiE+04 2 6E+04 2 6E+04 2 6E+04 METHYL TERT BUTYL ETHER V L 2 4E+04 4 5E+04 8 0E+04 1 5E+05 MOLYBDENUM NV S NAPHTHALENE V S 3 2E+03 5 0E+03 1 1 E+04 1 7E+04 NICKEL —NV—FS PENTACHLOROPHENOL NV S PERCHLORATE NV S PHENANTHRENE V S (Use sail gas) (Use soil gas) (Use sail gas) (Use sail gas) PHENOL NV S POLYCHLORINATED BIPHENYLS(PCBs) NV S PYRENE V 5 14E+02 14E+02 14E+02 14E+02 SELENIUM NVI S SILVER NVI S STYRENE V IF L 31E+05 31E+05 31E+05 31E+05 lert-BUTYL ALCOHOL (Use soil gas) (Use sell gas) (Use sail gas) (Use sail gas) TETRACHLOROETHANE 1 1,1,2- TVL (Use soil gas) (Use soil gas) (Use sail g is) (Use soll gas) TETRACHLOROETHANE 1 1,2 2- 1 9E+02 2 9E+02 6 4E+02 9 7E+02 ETRACHLOROETHYLENE 1 2E+02 5 0E+02 4 2E+02 1 7E+03 LLIUM rTPH LUENE 3 8E+05 5 3E+05 5 3E+05 S 3E+05 APHENE NV S (gasolines) v L (Use sail gas) (Use soil gas} {Use sad gas} {Use sell gas} (middle distillates) V L (Use soil gas) (Use soil gas) (Use soil gas) (Use sod gas) (residual fuels) NV LIS ICHLOROBENZENE,1,2,4- V L 2 5E+03 4 5E+03 712+03 12E+04 INTERIM FINAL-February 2005 SF Bay RWQCB rage 3 of 4 Table E-1 a(GW to IA)