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TABLE 14 <br /> ORAL AND DERMAL CANCER RISK(CONSTRUCTION WORKER SCENARIO) <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy, California <br /> ' Constituent in Soil 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 1.8E-09 <br /> Xylene(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 5.4E-09 <br /> Benzo(a)pyrene 0.0046 1.2E+01 0.15 7.8E-09 <br /> Benzo b fluoranthene 0.024 1.2E+00 0.15 4.1E-09 <br /> Benzo(g,h,i)perylene 0.040 NA 0.15 NA <br /> Chr Bene 0.081 1.2E-01 0.15 1.4E-09 <br /> Dibenz a,h anthracene 0.0068 4.1E+00 0.15 3.9E-09 <br /> Fluoranthene 0.027 NA 0.15 NA <br /> Fluorene 0.48 NA 0.15 NA <br /> ' <br /> Naphthalene 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 103 NA 0.01 NA <br /> Lead 16.3 8.5E-03 0.01 7.3E-09 <br /> ' <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: 3.2E-08 <br /> Equation: <br /> Risk=(SFo x Cs x(4.61 x 10-8))+(SFo x Cs x(6.37 x 10-7)x ABS) <br /> ' Where: <br /> SFo=oral cancer slope factor, (mg/kg-day)- <br /> Cs=concentration in soil, mg/kg <br /> ABS =absorption fraction,dimensionless(Source: PEA Manual, Page A-6). <br /> Abbreviations: <br /> ' BTEX W 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 1 of 1 From Science toSolaWns <br />