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TABLE 11 <br /> ' ORAL AND DERMAL HAZARD(RESIDENTIAL 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 9.0E 06 <br /> Eth lbenzene 1.5 I.OE-01 0.1 3.8E-04 <br /> Xylene(s) 1.5 2.0E-01 0.1 1.9E-04 <br /> PAHs <br /> Acenaphthene 0.17 6.0E-02 0.15 9.0E-05 <br /> Anthracene 0.090 3.0E-01 0.15 9.6E-06 <br /> Benzo(a)anthracene 0.032 NA 0.15 NA <br /> ' Benzo(a)pyrene 0.0046 NA 0.15 NA <br /> Benzo(b)fluoranthene 0,024 NA 0.15 NA <br /> Benzo(g,hj)perylcne 0.040 NA 0.15 NA <br /> Chry,ene 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 2.2E-05 <br /> Fluorene 0.48 4.0E-02 0.15 3.8&04 <br /> Naphthalene 0.36 2.0E-02 0.15 5.8E-04 <br /> Phenanthrene 1.8 NA 0.15 NA <br /> rene 0.074 3.0E-02 0.15 7.9E-05 <br /> ' METALS <br /> Barium 211 2.0E-01 0.01 1.5E-02 <br /> Beryllium 0.82 2.0E-03 0.01 5.8E-03 <br /> Chromium(Trivalent) 43.7 1.5E+00 0.01 4.1&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 /> Mercury 0.019 3.0E-04 0.01 9.1E-04 <br /> Molybdenum 0.71 5.0E-03 0.01 2.0E-03 <br /> Nickel 39.1 2.0E-02 0.01 2.8E-02 <br /> Vanadium 76.4 5.0E-03 0.01 2.2E-01 <br /> Zinc 84.6 3.0E-01 0.01 4.0E-03 <br /> Total Hazard Index: 2.7E-01 <br /> Equation: <br /> Oral/Dermal HQ=((Cs'RfDo)x(1.28 x 10-5))+((Cs/RfDo)x(1.28 x 10-4)x ABS) <br /> Where: <br /> .-fDo=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 /> 13Q=hazard quotient <br /> )bbreviations: <br /> 11TEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> ' mg/kg=Milligrams per kilogram <br /> 14A=Not Applicable <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> f; cation Source: <br /> TEA Manual,Table 2.3. <br /> Page I of I From science to Solutions <br />