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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationTable 5-92Air Emissions Inventory Summary – Operational (tpy)2015 2020 2025AlternativesPollutant No-Action B2 B4 No-Action B2 B4 No-Action B2 B4CO 1,493 1,497 1,586 1,430 1,510 1,492 1,582 1,662 1,644VOC 107 107 116 105 113 113 113 122 121NOX 367 367 417 379 427 427 410 458 458SOX 32 32 37 35 39 39 38 43 43PM10 8 8 9 9 9 9 9 10 10PM2.5 7 7 8 7 8 8 8 8 8Source: KB Environmental Sciences, Inc., 2011.5.7.8.2 Atmospheric Dispersion AnalysisAs shown in Table 5-93, the highest predicted concentrations of CO, NO 2PM 10and PM 2.5are well within theNAAQS for these pollutants for Alternatives B2 and B4 in 2015, 2020, and 2025. Similarly, there are less thaneight percent differences in the predicted concentrations among Alternatives B2 and B4 and the No-ActionAlternative. Concentrations are approximately two percent higher in 2015 with Alternative B4 compared toAlternative B2 and the No Action Alternative due to the earlier implementation of the runway extension andadditional aircraft operations. Concentrations of CO are approximately two percent higher in 2025 withAlternative B4 due to Partially Relocated Airport Road and its proximity to one of the modeled receptors (25G).Table 5-93 Atmospheric Dispersion Analysis Summary (µg/m 3 )2015 2020 2025AlternativesPollutant NAAQS No-Action B2 B4 No-Action B2 B4 No-Action B2 B4CO 1 hour 40,000 19,179 19,551 19,768 17,561 17,968 18,904 18,275 19,102 19,4998-hour 10,000 5,455 5,437 5,523 5,357 5,416 5,487 5,460 5,512 5,609NO2 Annual 100 42 42 43 40 41 41 40 40 40PM10 24-hour 150 40 40 40 40 39 39 40 39 39PM2.5 24-hour 35 34 34 34 34 34 34 34 34 34Annual 15 12 12 12 12 12 12 12 12 12Source: KB Environmental Sciences, Inc., 2011.5.7.8.3 CO “Hot-Spot” AnalysisThe highest predicted CO levels at all of the intersections analyzed in the CO “Hot-Spot” analysis aresummarized in Table 5-94. These values are all well within the NAAQS in 2015, 2020, and 2025 forAlternatives B2 and B4 as well as the No-Action Alternative. In 2025, the highest predicted CO levels areapproximately two percent higher for Alternative B4 than for Alternative B2 because Alternative B4 isforecasted to result in slightly higher levels of vehicle delay and idling at roadway intersections.Chapter 5 - Environmental Consequences 5-169 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc