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' TABLE 12 <br /> INHALATION HAZARD(RESIDENTIAL SCENARIO) <br /> 1 SURLAND HOMES-BRIDLE CREEK <br /> Tracy, California <br /> ' Constituent in Soil Cs(mgtkC81r{mg/m3) )2fDi Inhalation HQ <br /> BTEX <br /> Toluene 0.028 7.7E-07 8.6E-02 5.7E-06 <br /> Eth ]benzene 1.5 3.3E-05 5.7E-0] 3.7E-05 <br /> X lene(s) 1.5 3.3E-05 2.0E-01 LIE-04 <br /> PAHs <br /> Acenaphthene 0.17 3.5E-07 6.0&02 3.8E-06 <br /> Anthracene 0.090 1.8E-08 3.0E-01 3.9E-08 <br /> Benzo(a)anthracene 0.032 1.6E-09 NA NA <br /> Benzo(a)pyrene 0.0046 2.3E-10 NA NA <br /> Benzo(b)fluoranthene 0.024 1.2E-09 NA NA <br /> Benzo( ,h,i) a lene 0.040 2.0E-09 NA NA <br /> Chrysene 0.08I 4.1E-09 NA NA <br /> Dibenz(a,h)anthracene 0.0068 3.4E-10 NA NA <br /> ' Fluoranthene 0.027 1.3E-09 4.0E-02 2.2E-08 <br /> Fluorene 0.48 1.7E-07 4.0E-02 2.7E-06 <br /> Naphthalene 0.36 9.6E-07 2.6E-03 2.4E-04 <br /> ' Phenanthrene 1.8 9.0E-08 NA NA <br /> Pyrene 0.074 3.7E-09 3.0E-02 7.9E-08 <br /> METALS <br /> Barium 211 1.1E-05 2.0E-01 3.4E-05 <br /> ' <br /> Beryllium 0.82 4.1E-08 5.7E-06 4.6E-03 <br /> Chromium(Trivalent) 43.7 2.2E-06 1.5E+00 9.3E-07 <br /> Cobalt 12.0 6.0E-07 NA NA <br /> 1 <br /> Copper 103 5.2E-06 NA NA <br /> Lead 16.3 8.1 E-07 NA NA <br /> Mercury 0.019 9.7E-10 2.6E-05 2.4E-05 <br /> Molybdenum 0.71 3.6E-08 5.0E-03 4.6E-06 <br /> 1 Nickel 39.1 2.0E-06 1.41,-05 8.9E-02 <br /> Vanadium 76.4 3.8E-06 5.0E-03 4.9E-04 <br /> Zinc L 84.6 4.2E-06 3.0E-01 9.0E-06 <br /> ' Total Hazard Index: 9.5E-02 <br /> Equation: <br /> ' Inhalation HQ=(CaitlRfDi)x 0.639 <br /> Where: <br /> RfDi =the inhalation reference dose,mg/kg-day. <br /> ' C,,;,=concentration in air,mg/m3 <br /> HQ=hazard quotient <br /> (Note:Using the PEA Manual,the value for Ca,,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 /> ' mg/kg=Milligrams per kilogram <br /> mg/ma=Milligrams per cubic meter <br /> NA=Not Applicable <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> VOCs=Volatile organic compounds <br /> Equation Source: <br /> PEA Manual,Table 2.4. <br /> ' Page 1 of 1 From Science to Solurinns <br />