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TABLE 10 <br /> ESTIMATED ORAL AND DERMAL CANCER RISKS FOR SOILS <br /> FORMER VERNALIS PUMP STATION <br /> Vernalis, San Joaquin and Stanislaus Counties,California <br /> COPC Cs(mg/kg) SFo ABS Oral/Dermal Risk <br /> BTEX <br /> Toluene 3.5E-02 NA 0.1 NA <br /> Eth lbenzenc 5.0E-03 1.1E-02 0.1 1.9E-10 <br /> Xylene(s) 4.2E-01 NA 0.1 NA <br /> PAHs <br /> Acenaphthene 5.0E-03 NA 0.15 NA <br /> Benzo(a)anthracene 5.7E-02 1.2E+00 0.15 3.0E-07 <br /> Benzo a ene 8.1E-03 1.2E+01 0.15 4.3E-07 <br /> Benzo b fluoranthene 8.3E-03 1.2E+00 0.15 4.4E-08 <br /> Benzo ,h,i a lene 1.1E-02 NA 0.15 NA <br /> Benzo k fluoranthene 5.0E-03 1.2E+00 0.15 2.6E-08 <br /> Chrysene 8.6E-02 1.2E-01 0.15 4.5E-08 <br /> Dibenz a,h anthracene 5.0E-03 4.1E+00 0.15 9.0E-08 <br /> Fluoranthene 3.6E-02 NA 0.15 NA <br /> Fluorene 5.0E-03 NA 0.15 NA <br /> Indeno 1,2,3-cd ene 8.0E-03 1.2E+00 0.15 4.2E-08 <br /> Naphthalene 1.1E+00 NA 0.15 NA <br /> Phenanthrene 7.6E-01 NA 0.15 NA <br /> Pyrene 5.9E-02 NA 0.15 NA <br /> Total Risk: 9.7E-07 <br /> Equation: <br /> Oral/Dermal Risk=(SFo x Cs x[1.57 x 10-6])+(SFo x Cs x[1.87 x 10-5]x ABS) <br /> Where: <br /> SFo=oral cancer slope factor,(mg/kg-day)-1 <br /> Cs=concentration in soil,mg/kg <br /> ABS=absorption fraction,dimensionless(Source:PEA Manual,Page A-6). <br /> Abbreviations: <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> COPC=Constituent of potential concern <br /> mg/kg=Milligrams per kilogram <br /> mg/kg-day=Milligrams per kilogram per day <br /> NA=Not applicable <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> Equation Source: <br /> PEA Manual,Figure 2.3. <br /> ' =�� The Benham Companies,LLC <br /> �0-1j`.,, A WNoliy Owned Subsidiary <br /> Page I of 1 From Science to Salr bons <br />