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TABLE E-1a. GROUNDWATER SCREENING LEVELS FOR EVALUATION OF POTENTIAL VAPOR INTRUSION CONCERNS (Volatile chemicals only) '5Resldenflafommorc a n ustr a Land Use Land Use Vadose-Zone Sop Type Vadose-Zone Sol[Type High LowfModerate High Low/Moderate Physical Permeability Permeability Permeability Permeability CHEMICAL PARAMETER State (ug1L) (ugfL) (ug/L) (ug/L) CENAPHTHENE V S 4 2E+03 4 2E+03 4 2E+03 4 2E+03 ACENAPHTHYLENE V S (Use soil gas) (Use soil gas) (Use Sail g is) (Use sap gas) ACETONE V L 5 3E+07 4 6E+07 1 5E+08 1 3E+08 ALDRIN NV S NTHRACENE V 5 4 3E+01 4 3E+01 4 3E+01 4 3E+01 ANTIMONY NV S ARSENIC NV S BARIUM NVI S BENZENE V—F L 54E+02 19E+03 18E+03 64E+03 SENZO(a)ANTHRACENE NV S BENZO(b)FLUORANTHENE NV S BENZO(k)FLUORANTHENE NV S BENZO(g h i)PERYLENE NV S BENZO(a)PYRENE NVI S BERYLLIUM NV S BIPHENYL,7 1- V S (Use soli gas) (Use sail gas) (Use sod gas) (Use sad gas) BIS(2-CHLOROETHYQETHER V L 6 5E+01 5 0E+01 2 2E+02 1 7E+02 BIS(2-CHLOROISOPROPYL)ETHER V L (Use sod gas) (Use soil gas) (Use soil gas) (Use soil gas) BES(2-ETHYLHEXYL)PHTHALATE NV S BORON NV S BROMODICHLOROMETHANE V L 1 7E+02 3 QE+02 5 6E+02 1 0E+03 BROMOFORM NV 5 BROMOMETHANE V I G 5 8E+02 2 0E+03 1 6E+03 5 6E+03 CADMIUM NV S CARBON TETRACHLORIDE V L _93E+00 3 9E+01 31E+01 1 3E+02 CHLORDANE NV S CHLOROANILINE,p- NV S CHLOROSENZENE V L 1 3E+04 4 2E+04 3 7E+04 1 2E+05 CHLOROETHANE V G a 2E+02 3 2E+03 2 7E+03 1 1 E+04 CHLOROFORM V L 3 3E+02 1 1E+03 11 E+03 3 6E+03 CHLOROMETHANE V G 4 1E+01 1 5E+02 1417+02 6 0E+02 CHLOROPHENOL 2- V L 5 3E+03 1 4E+04 1 5E+04 4 0E+04 CHROMIUM(Total) INV S CHROMIUM 111 NV S CHROMIUM VI I NV I S CHRYSENE NV 5 (Use soli gas) (Use soil gas) (Use soll gas) (Use sod gas) COBALT NV S INTERIM FINAL-February 2005 SF Bay RWQCB Page 1 of 4 Table E-1a(GW to [A)