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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) Evaluationis expected to dominate composite noise exposure at any receptors. In 2015, for the No-Action Alternative inareas potentially affected by Alternative B2, composite noise levels at seven locations exceed the FAA-definedresidential land use compatibility level of 65 dB. This number remains at seven locations in 2020 and increasesto nine locations in 2025 under the No-Action Alternative. In 2015, for the No-Action Alternative in areaspotentially affected by Alternative B4, composite noise levels at seven locations exceed the FAA-definedresidential land use compatibility level of 65 dB. This number increases to eight locations in 2020 and increasesto ten locations in 2025 under the No-Action Alternative.5.3.4.2 Alternative B2This section presents the results of the noise analysis for Alternative B2 in 2015, 2020, and 2025 and comparesthe results to the No-Action Alternative. Figures 5-3 and 5-4 show the modeled flight tracks for Alternative B2.Population and Housing Impacts (Aircraft Noise Exposure) – 2015The runway use and number of operations would not change for Alternative B2 in 2015 compared to theNo-Action Alternative; however, the runway thresholds would change under Alternative B2 compared to theNo-Action Alternative due to the runway safety area enhancements to Runway 16-34. These changes in turnwould result in changes to the shape of the noise contours and the number of housing units affected. Figure 5-10shows the noise contours associated with Alternative B2 in 2015. Table 5-14 summarizes the housing units thatwould be exposed to aircraft noise levels of DNL 60 dB or more under Alternative B2 in 2015.Table 5-14Alternative B2: 2015 Aircraft Noise-Exposed Housing UnitsHousing Units by DNL value, Housing Units by DNL value, Net Housing Unit Change BetweenNo-Action Alternative 1 Alternative B2 1,2 No-Action Alternative and Alternative B2Total Total TotalAbove Above Above70 to 65 to DNL 60 to 70 to 65 to DNL 60 to 70 to 65 to DNL 60 toCity >75 dB 75 dB 70 dB 65 dB 65 dB >75 dB 75 dB 70 dB 65 dB 65 dB >75 dB 75 dB 70 dB 65 dB 65 dBWarwick 0 0 850 850 3,989 0 0 853 853 3,976 0 0 3 3 -13Cranston 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Total 0 0 850 850 3,989 0 0 853 853 3,976 0 0 3 3 -13SignificantNoiseIncrease -- -- -- -- -­ 0 0 0 0 -­ 0 0 0 0 -­Source: HMMH, 2011.Note: May include homes already sound insulated.1 Excludes 280 units have been purchased under the Completed Part 150 VLAP and 135 units assumed to be purchased by 2015 under the Current Part 150VLAP for a total of 415 acquired housing units.2 Excludes one unit acquired due to the Runway 16-34 RSA enhancement.Table 5-15 summarizes the population that would be exposed to aircraft noise levels of DNL 60 dB or moreunder Alternative B2 in 2015.Chapter 5 - Environmental Consequences 5-24 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc