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TABLE 9 <br /> INHALATION CANCER RISK:RESIDENTIAL SCENARIO 1 <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy,San Joaquin County,California <br /> COPC Cs(mg/kg) C.ir (mg/m') SFi Inhalation Risk <br /> BTEX <br /> 1 Toluene 000102.8E-08 NA NA <br /> Eth ]benzene 0.0070 1.5E-07 8.7E-03 2.0E-10 <br /> Xylene(s) 0.0050 1.1E-07 NA NA <br /> PAHs <br /> 1 <br /> Acenaphthene 0.29 6.1E-07 NA NA <br /> Anthracene 0.26 5.3E-08 NA NA <br /> Benzo(a)anthracene 0.19 1.6E-09 3.9E-01 9.0E-11 <br /> ' <br /> Benzo(a)pyrene 0.011 3.5E-10 3.9E+00 2.0E-10 <br /> Benzo b fluoranthene 0.056 2.8E-09 3.9E-01 1.6E-10 <br /> Bmzo ,h,i a lene 0.21 3.9E-09 NA NA <br /> Benzo k fluoranthene 0.00067 3.4E-11 3.9E-01 1.9E-12 <br /> 1 <br /> Chrysene 0.11 5.5E-09 3.9E-02 3.2E-11 <br /> Dibenz a,h anthracene 0.0073 3.4E-10 4.1E+00 2.0E-I0 <br /> Fluoranthene 0.068 3.3E-09 NA NA <br /> ' Fluorene 0.87 3.1E-07 NA NA <br /> Naphthalene 1.9 5.0E-06 1.2E-01 9.0E-08 <br /> Phenanthrene 1.2 4.4E-08 NA NA <br /> Pyrene 0.19 9.5E-09 NA NA <br /> ' METALS <br /> Barium 230 1.1E-05 NA NA <br /> Beryllium 0.94 4.7E-08 8.4E+00 5.8E-08 <br /> Chromium III 48 2.4E-06 NA NA <br /> ' Cobalt 14 6.5E-07 NA NA <br /> Copper 185 6.1E-06 NA NA <br /> Lead 40 6.0E-07 4.2E-02 3.8E-09 <br /> ' <br /> Mercury 0.019 7.5E-10 NA NA <br /> Molybdenum 1.0 4.1E-08 NA NA <br /> Nickel 43 2.1E-06 9.1E-01 2.8E-07 <br /> Vanadium 82 4.1E-06 NA NA <br /> 1 Zinc EF 143 5.7E-06 NA NA <br /> Total Risk: 4.4E-07 <br /> Equation: <br /> Inhalation Risk=SFi x C,;r x 0.149 <br /> Where: <br /> ' SFi=inhalation cancer slope factor,(mg(kg-day)- <br /> Ca;,=concentration in air,mg/m3 <br /> (Note:Using the PEA Manual,the value for C, is estimated using Figures 2.5,2.6&2.7 for <br /> VOCs and Figure 2.8 for non-VOCs.) <br /> Abbreviations: <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> 1 COPC=Constituent of potential concern <br /> mg/kg=Milligrams per kilogram <br /> mg/m'=Milligrams per cubic meter <br /> 1 NA=Not Applicable <br /> PAIls=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> VOCs=Volatile organic compounds <br /> 1 Equation Source: <br /> PEA Manual,Figure 2.4. <br /> ' Pagc I of I S/ ■/E <br />