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 are well within the NAAQS for each pollutant analyzed. The highestpredicted concentrations are expected to occur at Receptor 21G adjacent to the T.F. Green AirportMain Terminal Building, at Receptor 23G located along Post Road to the north of the T.F. Green AirportMain Terminal Building, and at Receptor 25G located along Airport Road north of Runway 16 (Figure 4-16).This is a result of the combined effects of emissions from motor vehicles traveling on the off-site roadway network,motor vehicles operating in the terminal area, and aircraft operating near the runway ends and aprons. All otherreceptors are predicted to have lower levels compared to these locations.Table 5-80 Alternative B2: Atmospheric Dispersion Analysis Results (µg/m 3 )Maximum Concentration 1ExceedsReceptor ofMaximum Concentration 2Pollutant Avg. Time NAAQS 2015 2020 2025 NAAQS 2015 2020 2025CO 1 hour 40,000 19,551 17,968 19,102 No 25G 23G 23G8-hour 10,000 5,437 5,416 5,512 No 25G 23G 23GNO2 Annual 100 42 41 40 No 21G 21G 21GPM10 24-hour 150 40 39 39 No 21G 21G 21GPM2.5 24-hour 35 34 34 34 No 21G 21G 21GAnnual 15 12 12 12 No 21G 21G 21GSource: 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.CO “Hot-Spot” AnalysisThe results of the CO “Hot-Spot” modeling for Alternative B2 are summarized in Table 5-81 and represent the highest COlevels at any of the receptors analyzed. The NAAQS for CO are also shown for comparison. Based on these findings, COlevels in the vicinities of the intersections analyzed are not expected to exceed the NAAQS for CO under Alternative B2.Table 5-81 Alternative B2: CO “Hot-Spot” Analysis Maximum Concentration Results (µg/m 3 )Maximum Concentration201520202025ExceedsID Intersection Location1-Hour 8-Hour 1-Hour 8-Hour 1-Hour 8-Hour NAAQS1 Post Road/Lincoln Avenue 10,000 4,400 8,700 3,700 9,700 4,200 No2 Warwick Avenue/Airport Road (New) NA NA 9,600 4,400 10,700 4,800 No3 Warwick Avenue/Airport Road (Old) 10,400 4,700 9,400 4,100 10,200 4,500 No5 Post Road/Airport Connector 9,400 4,000 8,500 3,600 9,700 4,200 No6 Post Road/Main Avenue 9,700 4,200 8,900 3,900 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 5-158 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc