04_AECOM_Environmental Report_Final

Air Quality Madeling Report Table 3-2 Inhalation Risk Toxicity Factors Pollutant Long-Term URF Long-Term RIC (uaim?}* (ua/m’) 2-Methylnaphthalene” 1.40E-08 14 Acenaphthene™! 1406-05 210 Acenaphthylene 1.40E-08 NIA Anthracene”! 1.10E-05 41,050 Benzo[ajanthracene 1.10E-04 NA Benzo[a]pyrene 6,00E-04 0.002 Benzo[hjfluoranthene 1,10E-04 NIA Benzo[e]pyrene'” NIA NIA Benzolg,h,i]perylene 1.40E-05 NIA Benzo[k}fluoranthene 1.40E-04 NIA Chrysene 140-05 NIA Dibenz(a,hjanthracene: 1.20E-03 NA Fluoranthene*» 1.10E-06 140 Fluorene® 1.10E-06 140 Indeno[1,2,3-cd]pyrene 1.10E-04 NIA Naphthalene 3.40E-05 3 Perylene? NIA NA Phenanthrene 1,10E-08 NIA Pyrene® 1.10E-05 105 ‘Source: NIDEP Division of Air Qualily Toxicity Values for Inhalation Exposure (Aprit 2023) tos dele, oo Notes: AYA: Not Available (1) Per NIDEP’s memo containing guidance on estimating rlsk from PAHs (NJDEP, 2012), benzofe}pyrene and perylene emissions were inclided as part of benzofajpyrene since these PAHS did not have individual URFs. {2) RFC factors were calculated for these PAHs in accordance with the methodologies described in Section 3.3 of this report. 3.3 Route-to-Route Extrapolation for Additional RfC Values The NJDEP does not provide a RfC value for every PAH. In order to establish RIC values for additional compounds, the methodology used in USEPA’s HHRAP (USEPA, 2005) was followed where a RIC was calculated using route-to- route extrapolation of available oral reference dose values (RfDs). This approach multiplias the RfD by an average human inhalation rate of 20 m*/day and then divides by the average human body weight of 70 kg to estimate the RIC. This methodolagy assumes that, for a given compound, the toxicity following oral exposure will be equivalent to the toxicity following inhalation exposure. Table 3-3 lists the PAHs for which RfD values were available and RfCs were calculated Using route-to-route extrapolation. If there are no RfDs available from USEPA's IRIS database (USEPA, 2024), then it is assumed that the compound is not considered to be important from an oral or inhalation human exposure standpoint. AECOM 7