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TABLE 23 <br /> I ORAL AND DERMAL HAZARD: CONSTRUCTION WORKER SCENARIO <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy,San Joaquin County, California <br /> COPC Cs m ) RfDo ABS Oral/Dermal HQ <br /> BTEX <br /> ' Toluene 0.0030 8.0E-02 0.1 2.9E-07 <br /> Eth lbenzene 1 0.0030 1 1.0E-01 0.1 2.3E-07 <br /> Xylene(s) 0.0030 2.0E-01 0.1 1.2E-07 <br /> PAHs <br /> Acenaphthene hthene 0.18 6.0E-02 0.15 3.0E-05 <br /> Anthracene 0.14 3.0E-01 0.15 4.6E-06 <br /> Benzo(a)anthracene 0.058 NA 0.15 NA <br /> Benzo(a)pyrene 0.0063 NA 0.15 NA <br /> Benzo b fluoranthene 0.054 NA 0.15 NA <br /> Benzo(g,h,i)perylene 0.058 NA 0.15 NA <br /> Benzo k fluoranthene 0.0067 NA 0.15 NA <br /> Chrysene 0.063 NA 0.15 NA <br /> Dibenz a h anthracene 0.0073 NA 0.15 NA <br /> ' Fluoranthene 0.039 4.0E-02 0.15 9.7E-06 <br /> Fluorene 0.57 4.0E-02 0.15 1.4E-04 <br /> Naphthalene 1.1 2.0E-02 0.15 5.5E-04 <br /> Phenanthrene 0.60 NA 0.15 NA <br /> ' Pyrene 0.099 3.0E-02 0.15 1 3.3E-05 <br /> METALS <br /> Barium 211 2.0E-01 0.01 3.9E-03 <br /> Beryllium 0.82 2.0E-03 0.01 1.5E-03 <br /> Chromium III 44 1.5E+00 0.01 1.1E-04 <br /> Cobalt 12 NA 0.01 NA <br /> Copper 103 NA 0.01 NA <br /> ' Lead 16 NA 0.01 NA <br /> Mercury 0.014 3.0E-04 0.01 1.7E-04 <br /> Mol bdenum0.71 5.0E-03 0.01 5.2E-04 <br /> Nickel 39 2.0E-02 0.5t 7.2E-03 <br /> Vanadium 76 5.0E-03 0.01 1 5.6E-02 <br /> Zinc 1 85 3.0E-01 0.01 1.0E-03 <br /> Total Hazard Index: 7.1E-02 <br /> Equation: <br /> 1 <br /> Oral/Dermal HQ=([Cs/RfDo]x[3.23 x 101)+([Cs/RfDo]x[4.46 x 10"s]x ABS) <br /> Where: <br /> RfDo=oral reference dose,mg/kg-day <br /> 1 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 /> 1 NA=Not Applicable <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> ' Equation Source: <br /> PEA Manual,Table 2.3. SAIC <br /> Page I of 1 <br />