04_AECOM_Environmental Report_Final

Air Quality Madeling Report Asummary of the health risk assessment is presented below in Table 5-2. As shown, the total combined cancer inhalation risk far total PAH is belew 1 in a million (1 x 105 or 1E-06) and the hazard quotient for each individual PAH with a corresponding RC is below 1. indicating negligible risk. Table 5-2 Model Output Summary: Annual Average Concentration and Risk Assessment Pollutant Modeled = Inhalation Unit Cancer Risk Reference Long-Term Estimated Risk Factor Concentration Hazard Impacts. (ugim3)* (ugim?) ‘Quotient (HQ) (pgim) 2-Methylnaphthalene 9,03E-04 1,10E-05 9.9E-10 14 6.45E-05 Acenaphthene 5.19E-05 1.10E-05 5.7E-11 210 2.47E-07 Acenaphthylene 6.22E-04 1.10E-06 6.8E-10 - - Anthracene 1,09E-04 1,10E-05, 1,2E-09 1050 1.03E-07 Benzofajanthracene 2.78E-05 1,10E-04 3.0E-09 - - Benzofa]pyrene(1) 2496-05 3.00E-04 156-08 0.002 1.24E-02 Benzo[b}fluoranthene 2.39E-05 1,.10E-04 2.6E-09 - - Benzolg,h.iJparylene 4.48E-05 1106-05 166-10 - - Benzolk}fiuoranthene 9.89E-05 1.10E-04 1.1E-09 - - Chrysene 4.49E-05 1.10E-05 496-10 - - Dibenz(a,hjanthracene 6.59E-05 1,.20E-03 7.9E-09 - - Fluoranthene: 1.63E-04 1.10E-06 1.8E-10 140 1.16E-06 Fluorene 2.11E-04 1.10E-08 2.3E-10 140 1.51E-06 Indeno[1,2,3-cd]pyrene —-7.23E-05 41410E-04 8.0E10 - - Naphthalene 4,30E-03 3.40E-05 1,5E-07 3 1.43E-03 Phenanthrene 5,88E-04 1.10E-08 3.4E-10 - - Pyrene 1,44E-04 1,10E-08 1,8E-10 105 1.37E-06 Total PAH - - 1.8E07 - ~ AECOM 28