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' TABLE 17 <br /> ORAL AND DERMAL HAZARDS (CONSTRUCTION WORKER SCENARIO) <br /> ' SURLAND HOMES-BRIDLE CREEK <br /> Tracy, California <br /> ' Constituent in Soil Cs(m ) RfDo ABS Oral/Dermal HQ <br /> BTEX <br /> Toluene 0.028 8.0E-02 0.1 2.7E-06 <br /> Eth lbenzene 1.5 1.0E-01 0.11.2E-04 <br /> Xylene(s) 1.5 2.0E-01 0.1 1 5.7E-05 <br /> PAHs <br /> Acenaphthene 0.17 6.0E-02 0.15 2.8E-05 <br /> ' Anthracene 0.090 3.0E-01 0.15 3.0E-06 <br /> Benzo(a)anthracene 0.032 NA 0.15 NA <br /> Benzo(a)pyrene 0.0046 NA 0.15 NA <br /> 1 Benzo b fluoranthene 0.024 NA 0.15 NA <br /> Benzo( ,h,i)per ]ene 0.040 NA 0.15 NA <br /> Chr sene 0.081 NA 0.15 NA <br /> ' Dibenz(a,h)anthracene 0.0068 NA 0.15 NA <br /> Fluoranthene 0.027 4.0E-02 0.15 6.7E-06 <br /> Fluorene 0.48 4.0E-02 0.15 1.2E-04 <br /> Naphthalene 0.36 2.0&02 0.15 LSE-04 <br /> ' Phenanthrene 1.8 NA 0.15 NA <br /> Pyrene 0.074 3.0&02 0.15 2.5E-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 Trivalent 43.7 1.5E+00 0.01 LIE-04 <br /> ' Cobalt 12.0 NA 0.01 NA <br /> Copper 103 NA 0.01 NA <br /> Lead 16.3 NA 0.01 NA <br /> ' <br /> Mercury 0.019 3.0E-04 0.01 2.4E-04 <br /> Molybdenum 0.71 5.0E-03 0.01 5.3E-04 <br /> Nickel 39.1 2.0E-02 0.01 7.2E-03 <br /> Vanadium 76.4 5.0E-03 0.01 5.6E-02 <br /> ' Zinc 84.6 3.0E-01 0.01 1.0E-03 <br /> Total Hazard Index: 7.1E-02 <br /> ' Equation: <br /> Oral/Dermal HQ=((Cs/RfDo)x(3.23 x 10-6))+((Cs/RfDo)x(4.46 x 10-5)x ABS) <br /> ' Where: <br /> RfDo=oral reference dose, in units of 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 /> mg/kg=Milligrams per kilogram <br /> NA=Not Applicable <br /> PAH,=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> Equation Source: <br /> 1 PEA Manual,Table 2.3. <br /> -w1w w Mw <br /> MwwF/'vl Lam® <br /> ' Page 1 of 1 From Science to Solutions <br />