Laserfiche WebLink
iTABLE 18 <br /> INHALATION HAZARD(CONSTRUCTION WORKER SCENARIO) <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy, California <br /> Constituent in Soil Cs(mg/kg) Cw,(mwrn ) mi Inhalation HQ <br /> BTEX <br /> Toluene 0.028 7.7E-07 8.6E-02 1.8E-06 <br /> Eth lbenzene 1.5 3.3E-05 5.7E-01 1.1E-05 <br /> Xylene(s) 1.5 3.3E-05 2.0E-01 3.3E-05 <br /> PA Hs <br /> Acenaphthene 0.17 3.5E-07 6.0E-02 1.2E-06 <br /> Anthracene 0.090 1.8E-08 3.0E-01 1.2E-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 fluoranthene 0.024 1.2E-09 NA NA <br /> Benzo( ,h,i)pa leve 0.040 2.0E-09 NA NA <br /> Ch sene 0.081 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 6.6E-09 <br /> Fluorene 0.48 1.7E-07 4.0E-02 8.4E-07 <br /> Naphthalene 0.36 9.6E-07 2.6E-03 7.2E-05 <br /> ' Phenanthrene 1.8 9.0E-08 NA NA <br /> Pyrene 0.074 3.7E-09 3.0E-02 2.4E-08 <br /> METALS <br /> Barium 211 1.1E-05 2.0E-01 1.0E-05 <br /> Beryllium 0.82 4.1 E-08 5.7E-06 1.4E-03 <br /> Chromium(Trivalent) 43.7 2.2E-06 1.5E+00 2.9E-07 <br /> Cobalt 12.0 6.0E-07 NA NA <br /> Copper 103 5.2E-06 NA NA <br /> Lead 16.3 8.1E-07 NA NA <br /> Mercury 0.019 9.7E-10 2.6E-05 7.3E-06 <br /> Molybdenum 0.71 3.6E-08 5.0E-03 1.4E-06 <br /> ' Nickel 39.1 2.0E-06 IAE-05 2.7E-02 <br /> Vanadium 76.4 3.8E-06 5.0E-03 1.5E-04 <br /> Zinc 84.6 4.2E-06 3.0E-01 2.8E-06 <br /> Total Hazard Index: 2.9E-02 <br /> Equation: <br /> Inhalation HQ=(C,j RfDi)x 0.196 <br /> Where: <br /> RfDi-the inhalation reference dose, mg/kg-day. <br /> Ca;r=concentration in air, mg/m3 <br /> HQ=hazard quotient <br /> (Note:Using the PEA Manual,the value for Ca;r 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/m3=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,Figure 2.4. <br /> Page I of I From Science to Sofixons <br />