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TABLE 8 <br /> ESTIMATED ORAL AND DERMAL CANCER RISKS <br /> MOUNTAIN HOUSE DEVELOPMENT SITE #6 <br /> Mountain House, San Joaquin County,California <br /> Oral/Dermal <br /> COPC in Soil Cs(mg/kg) SFo ABS Risk <br /> BTEX <br /> Benzene 0.00050 1.0E-01 0.1 1.7E-10 <br /> Ethylbenzene 0.055 1.1E-02 0.1 2.1E-09 <br /> Xylene(s) 0.0010 NA 0.1 NA <br /> PAHs <br /> Acenaphthene 0.47 NA 0.15 NA <br /> Acenaphthylene 0.19 NA 0.15 NA <br /> Anthracene 0.17 NA 0.15 NA <br /> Benza(a)anthracene 0.21 1.2E+00 0.15 1.1E-06 <br /> Benzo(a)pyrene 0.041 1.2E+01 0.15 2.2E-06 <br /> Benzo(b)fluoranthene 0.052 1.2E+00 0.15 2.7E-07 <br /> Benzo(g,h,i)perylene 0.033 NA 0.15 NA <br /> Benzo(k)fluoranthene 0.047 1.2E+00 0.15 2.5E-07 <br /> Chrysene 0.68 1.2E-01 0.15 3.6E-07 <br /> Dibenz(a,h)anthracene 0.034 4.1E+00 0.15 6.1E-07 <br /> Fluoranthene 0.079 NA 0.15 NA <br /> Fluorene 0.66 NA 0.15 NA <br /> Indeno(1,2,3-cd)pyrene 0.016 1.2E+00 0.15 8.4E-08 <br /> Naphthalene 0.33 NA 0.15 NA <br /> Phenanthrene 4.0 NA 0.15 NA <br /> Pyrene 0.27 NA 0.15 NA <br /> Total Risk: 4.8E-06 <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)_l <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 /> Cal/EPA=California Environmental Protection Agency <br /> COPC=Contstituent of potential concern <br /> DTSC=Department of Toxic Substances Control <br /> mg/kg=Milligrams per kilogram <br /> NA=Not applicable <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> Equation Source: <br /> PEA Manual,Figure 2.3. (Cal/EPA DTSC,June 1999). <br /> SATE. <br /> Page 1 of 1 From Science 10 solvilons <br />