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www i aaaaw a� VOGUE CWTO W ne Female CalTOXTm 4.0 beta: Eight-Compartment Multimedia Exposure Model - Contaminated Soil Copyright c 2002 Regents of the University of California Chemical ==> Benzene _ Summary of Results: j Landscape ==> CA Res( a il) Exposure Factors Set--> Female i9+ potencies ADis Un-mitigated nsk and/or hazard ratio Toxicity Data ==> 1/(mg/kg-d) (mg/kg-d) Risk 10 E-2'56 Inhalation 10 E-01 0 Hazard ratio 0 0 E+0 Ingestion 10 E-01 a Dermal 10 E-01 0 Target Soil Concentrations (in ppm) Total dose 0 Risk Hazard quotm Based on cancer risk: Target Risk/Hazard = 10 E-06 100 Root sod 0 0 E+0 not avlbl current value should be> Vadose sod error not avibi Root-soil thickness= > 23 OK Root Soil n/a Alter root soll thickness to? 2 3 E+00 Based on hazard I Vadose soil nIa Distance off-site for air exposure= 0 0 E+00 meters Root sod 0.0 E+0 not avibl Time after initial concentrations Vadose soil error not avibl when exposure begins 3 7 E+02 days Measured Concentrations (at time=0) Concentration limits without NAPL Root-zone sod 0 ppm(mg/kg) Root sod 2 5 E+03 mg/kg solid Vadose-zone sod 184 ppm(mg/kg) Vadose sod 2 3 E+03 mg/kg solid Ground water 0 011 ppm m Groundwater 18 E+03 mg/L water Continuous inputs Methane flux m/d 0 Time avrg Conc.in on-site environmental media Source term to air(mond) 0 0 E+00 Sa Air 2 0 E-256 mg/m3 Source term to ground-surface sod (moVd) 0 0 E+00 Sg Total Leaf 8 5 E-258 mg/kg(total) Source term to root-zone soil (moVd) 0 0 E+00 Ss Gmd-surface sod 2 8 E-254 mg/kg(total) Source term to surface water moVd 0 0 E+00 SW Root-zone soil 2 5 E-252 mg/kg(total) A uifer characteristics Vadose zone sod 5 2 E-02 mg/kg(total) Distance to first well(m) 7 6 E+02 d well Ground water 7 0 E-04 mg/L(water) 0 005716642 Darcy veleocity(mid) 10 E-01 v_darc Surface water 1 1 E-255 mg/L Water dispersion coeff 02/d 5 0 E-02 D T Sediment 112 E-255 mg/kg Page 11