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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationTable 5-94 CO “Hot-Spot” Analysis Summary (µg/m 3 )Year NAAQS No-Action Alternative Alternative B2 Alternative B42015 1 hour 40,000 10,400 10,400 10,5008-hour 10,000 4,700 4,700 4,8002020 1 hour 40,000 9,600 9,600 9,5008-hour 10,000 4,400 4,400 4,3002025 1 hour 40,000 10,700 10,700 10,8008-hour 10,000 4,800 4,800 4,900Source: KB Environmental Sciences, Inc., 2011.5.7.8.4 Hazardous Air PollutantsCompared to the No-Action Alternative, there are minor predicted increases in total HAPs emissions in 2015 to2020 and 2025 for Alternatives B2 and B4 due to the forecasted increased operations over this time period.Differences in total HAPs emissions between Alternatives B2 and B4 are negligible.5.7.8.5 Construction EmissionsUnder Alternative B4, construction emissions during the initial phase (2015), shown in Table 5-95, are predictedto be less when compared to Alternative B2. However, during the second phase (2020), Alternative B4 isestimated to result in greater construction emissions. For Alternative B2, both the North Apron construction andthe Runway 16-34 reconstruction would be completed prior to 2016. Neither of these projects would begin priorto 2016 for Alternative B4.Table 5-95Air Emissions Inventory Summary – Maximum Construction Emissions (tpy)2015 Phase 1,2 2020 Phase 1,3Pollutant Alternative B2 Alternative B4 Alternative B2 Alternative B4CO 20.9 18.9 18.7 17.8VOC 4.4 3.8 3.8 3.9*NOX 49.5 38.3 19.4 31.6SOX 0.2 0.1 0.1 0.1PM10 7.3 6.8 5.7 6.4PM2.5 2.7 2.3 1.3 1.9Source: KB Environmental Sciences, Inc., 2011.1 2015 Phase includes 2012 through 2015 (Alternative B2) and 2010 through 2015 (Alternative B4); 2020 Phase includes 2016 through 2020.2 The results shown are for the year 2013 (Alternatives B2) and year 2014 (Alternative B4); the year of greatest emissions in the 2015 phase.3 The results shown are for the years 2018 and 2020 (Alternative B2), and year 2016 (Alternative B4); the year of greatest emissions in the 2020 phase.Chapter 5 - Environmental Consequences 5-170 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc