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TABLE 20 <br /> ' ORAL AND DERMAL CANCER RISK: CONSTRUCTION WORKER SCENARIO <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy,San Joaquin County,California <br /> COPC Cs(mg/kg) SFo ABS Oral/Dermal Risk <br /> BTEX <br /> Toluene 0.0030 NA 0.1 NA <br /> Eth Ibenzene 0.0030 1.1E-02 0.1 3.6E-12- <br /> Xylene(s) <br /> .6E-12X lene s 0.0030 NA 0.1 NA <br /> 1 PAHs <br /> Acenaphthene 0.18 NA 0.15 NA <br /> Anthracene 0.14 NA 0.15 NA <br /> Benzo(a)anthracene 0.058 1.2E+00 0.15 9.9E-09 <br /> Benzo(a)pyrene 0.0063 1.2E+01 0.15 1.1E-08 <br /> Benzo b fluoranthene 0.054 1.2E+00 0.15 9.2E-09 <br /> Benzo(g,h,i)perylene 0.058 NA 0.15 NA <br /> Benzo k fluoranthene 0.0067 1.2E+00 0.15 1.1E-09 <br /> Ch Bene 0.063 1.2E-01 0.15 1.1E-09 <br /> Dibenz ah anthracene 0.0073 4.1E+00 0.15 4.2E-09 <br /> ' Fluoranthene 0.039 NA 0.15 NA <br /> Fluorene 0.57 NA 0.15 NA <br /> Naphthalene 1.1 NA 0.15 NA <br /> Phenanthrene 0.60 NA 0.15 NA <br /> ' <br /> Pyrene 0.099 NA 0.15 NA <br /> METALS <br /> Barium 211 NA 0.01 NA <br /> ' <br /> Beryllium 0.82 NA 0.01 NA <br /> Chromium III 44 NA 0.01 NA <br /> Cobalt 12 NA 0.01 NA <br /> Copper 103 NA 0.01 NA <br /> ' Lead 16 8.5E-03 0.01 7.1E-09 <br /> Mercury 0.014 NA 0.01 NA <br /> Molybdenum 0.71 NA 0.01 NA <br /> Nickel 39 NA 0.01 NA <br /> Vanadium 76 NA 0.01 NA <br /> Zinc 85 NA 0.01 NA <br /> ' Total Risk: 4.3E-08 <br /> Equation: <br /> Risk=(SFo x Cs x[4.61 x 10-8])+(SFo x Cs x[6.37 x 10-']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=Benzene,toluene,ethylbenzene,and total xylenes <br /> COPC=Constituent of potential concern <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. SSI LC <br /> ' Page 1 of l <br />