T.F. Green Airport Improvement Program - FEIS Chapters - PVD

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationAll of the maximum predicted concentrations under Alternative B4 are within the NAAQS for each pollutantanalyzed. The highest predicted concentrations are expected to occur at Receptor 21G adjacent to theT.F. Green Airport Main Terminal Building, at Receptor 23G located along Post Road to the north of theT.F. Green Airport Main Terminal Building, and at Receptor 25G located along Airport Road north ofRunway 16. This is a result of the combined effects of emissions from motor vehicles traveling on the off-siteroadway network and aircraft operating near the runway ends and within the aprons. All other receptors arepredicted to have lower levels compared to these locations.Table 5-84 Alternative B4: Atmospheric Dispersion Analysis Results (µg/m 3 )Maximum Concentration 1ExceedsReceptor ofMaximum Concentration 2Pollutant Avg. Time NAAQS 2015 2020 2025 NAAQS 2015 2020 2025CONO21 hour8-hourAnnual40,00010,00010019,7685,5234318,9045,4874119,4995,60940NoNoNo25G25G21G25G23G21G25G23G21GPM10PM2.524-hour24-hourAnnual1503515403412393412Source: KB Environmental Sciences, Inc., 2011.Note: See Table 5-76 for explanatory abbreviations and footnotes.21G Adjacent to the T.F. Green Airport Main Terminal Building.23G Located along Post Road, north of T.F. Green Airport Main Terminal Building.25G Located along Airport Road north of Runway 16.1 Maximum Concentration means second highest predicted concentration (except 24-hour PM10 which is the fourth-highest and 24-hour PM2.5 which is the eighth highest) using EDMS at all of the receptors analyzed with conservatively high background concentrations added.2 See Figure 4-16 for map of receptor locations.393412NoNoNo21G21G21G21G21G21G21G21G21GCO “Hot-Spot” AnalysisThe results of the CO “Hot-Spot” modeling for Alternative B4 are summarized in Table 5-85 and represent the highestCO levels at any of the receptors analyzed. The NAAQS for CO are also shown for comparison. Based on these findings,CO levels in the vicinities of the intersections analyzed are not expected to exceed the NAAQS for CO.Table 5-85 Alternative B4: CO “Hot-Spot” Analysis Maximum Concentration Results (µg/m 3 )Maximum Concentration2015 2020 2025 ExceedsID Intersection Location 1-Hour 8-Hour 1-Hour 8-Hour 1-Hour 8-Hour NAAQS1 Post Road/Lincoln Avenue 10,000 4,400 9,200 4,100 10,300 4,500 No3 Warwick Avenue/Airport Road 10,400 4,700 9,500 4,300 10,700 4,800 No4 Post Road/Airport Road 10,500 4,800 9,500 4,300 10,800 4,900 No5 Post Road/Airport Connector 9,500 4,100 8,600 3,700 9,800 4,200 No6 Post Road/Main Avenue 9,800 4,300 9,100 4,000 10,200 4,500 NoNAAQS for CO 40,000 10,000 40,000, 10,000 40,000 10,000Source: KB Environmental Sciences, Inc., 2011.Note: See Table 5-77 for explanatory abbreviations and footnotes.Chapter 5 - Environmental Consequences 5-161 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc