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TABLE 24 <br /> INHALATION HAZARD: CONSTRUCTION WORKER SCENARIO <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy,San Joaquin County,California <br /> ' COPC Cs(mg/kg) C,;,(mg/m3) RfDi Inhalation HQ <br /> BTEX <br /> Toluene 0.0030 8.3E-08 8.6E-02 1.9E-07 <br /> Eth (benzene 0.0030 6.5E-08 5.7E-01 2.2E-08 <br /> Xylene(s) 0.0030 6.7E-08 2.0E-01 6.6E-08 <br /> PAHs <br /> ' <br /> Acenaphthene 0.18 3.8E-07 6.0E-02 1.2E-06 <br /> Anthracene 0.14 2.8E-08 3.0E-01 1.9E-08 <br /> Benzo(a)anthracene 0.058 2.9E-09 NA NA <br /> Benzo(a)pyrene 0.0063 3.2E-10 NA NA <br /> Benzo fluoranthene 0.054 2.7E-09 NA NA <br /> Benzo ,h,i a lene 0.058 2.9E-09 NA NA <br /> Benzo k fluoranthene 0.0067 3.4E-10 NA NA <br /> Chrysene 0.063 3.2E-09 NA I NA <br /> Dibenz a,h anthracene 0.0073 3.7E-10 NA NA <br /> Fluoranthene 0.039 2.0E-09 4.0E-02 9.6E-09 <br /> Fluorene 0.57 2.1E-07 4.0E-02 1.0E-06 <br /> Naphthalene 1.1 2.9E-06 2.6E-03 2.2E-04 <br /> Phenanthrene 0.60 3.0E-08 NA NA <br /> Pyrene 0.099 5.0E-09 3.0E-02 3.2E-08 <br /> METALS <br /> Barium 211 1.1E-05 2.0E-01 1.0E-05 <br /> Beryllium 0.82 4.1E-08 5.7E-06 1.4E-03 <br /> Chromium Ill 44 2.2E-06 1.5E+00 2.9E-07 <br /> Cobalt 12 6.0E-07 NA NA <br /> Copper 103 5.2E-06 NA NA <br /> Lead 16 8.0E-07 NA NA <br /> Mercury 0.014 7.0E-10 2.6E-05 5.3E-06 <br /> Molybdenum 0.71 3.6E-08 5.0E-03 1.4E-06 <br /> Nickel 39 2.0E-06 1.4E-OS 2.7E-02 <br /> Vanadium 76 3.8E-06 5.0E-03 1.5E-04 <br /> Zinc 85 4.3E-06 3.0E-01 2.8E-06 <br /> Total Hazard Index: 2.9E-02 <br /> ' Equation: <br /> Inhalation HQ=(C,;,JRtDi)x 0.196 <br /> Where: <br /> RIM=the inhalation reference dose,mg/kg-day <br /> C,;,=concentration in air,mg/m3 <br /> HQ=hazard quotient <br /> 1 (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 /> COPC=Constituent of potential concern <br /> mg/kg=Milligrams per kilogram <br /> mg/m'=Milligrams per cubic meter <br /> NA=Not Applicable <br /> PAI-Is=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> VOCs=Volatile organic compounds <br /> ' Equation Source: <br /> PEA Manual,Figure 2.4. <br /> Page 1 of I SSI IC. <br />