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TABLE 8 <br /> ORAL AND DERMAL CANCER RISK(RESIDENTIAL SCENARIO) <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy,California <br /> Constituent in Soil 7 Cs(mg/kg) SFo ABS Oral/Dermal Risk <br /> BTEX <br /> Toluene 0.028 NA 0.1 NA <br /> Eth lbenzene 1.5 1.1E-02 0.1 5.7E-08 <br /> X lene(s) 1.5 NA 0.1 NA <br /> PAHs <br /> Acenaphthene 0.17 NA 0.15 NA <br /> Anthracene 0.090 NA 0.15 NA <br /> Benzo(a)anthracene 0.032 1.2E+00 0.15 1.7E-07 <br /> Benzo(a)pyrene 0.0046 1.2E+01 0.15 2.4E-07 <br /> Benzo(b)fluoranthene 0.024 1,2E+00 0.15 1.3E-07 <br /> Benzo( ,h,i) er lene 0.040 NA 0.15 NA <br /> ' <br /> Chrysene 0.081 1.2E-01 0.15 4.3E-08 <br /> Dibenz(a,h)anthracene 0.0068 4.1E+00 0.15 1.2E-07 <br /> Fluoranthene 0.027 NA 0.15 NA <br /> Fluorene 0.48 NA 0.15 NA <br /> . Na hthalene 0.36 NA 0.15 NA <br /> Phenanthrene 1.8 NA 0.15 NA <br /> Pyrene 0.074 NA 0.15 NA <br /> METALS <br /> Barium 211 NA 0.01 NA <br /> Beryllium 0.82 NA 0.01 NA <br /> ' Chromium(Trivalent) 43.7 NA 0.01 NA <br /> Cobalt 12.0 NA 0.01 NA <br /> Copper I03 NA 0.01 NA <br /> Lead 16.3 8.5E-03 0.01 2.4E-07 <br /> Mercury 0.019 NA 0.01 NA <br /> Molybdenum 0.71 NA 0.01 NA <br /> Nickel 39.1 NA 0.01 NA <br /> ' Vanadium 76.4 NA 0.01 NA <br /> Zinc 84.6 NA 0.01 NA <br /> Total Risk: 1.0E-06 <br /> Equation: <br /> Oral/Dermal Risk (SFo x Cs x(1.57 x 10-6))+(SFo x Cs x(1.87 x IO-5)x ABS) <br /> Where: <br /> SFo=oral cancer slope factor, (mg/kg-day)-t <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 /> 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. _ <br /> Page l of 1 From Science to Solutioes <br />