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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationTable 5-25Alternative B4: 2020 and 2025 Aircraft Noise-Exposed PopulationPopulation by DNL value,No-Action 12020TotalAbove>75 70 to 65 to DNL 60 toCity dB 75 dB 70 dB 65 dB 65 dBWarwick 0 0 2,472 2,472 9,988Cranston 0 0 0 0 78Total0 0 2,472 2,472 10,065Increase 5 -­ -­ -­ -­ -SignificantNoisePopulation by DNL value,Alternative B4 2,32020TotalAboveDNL65 dB>75 dB70 to75 dB65 to70 dB60 to65 dB0 47 2,632 2,679 10,3170 0 0 0 3010 47 2,632 2,679 10,6170 47 362 409 -­Net Population ChangeNo-Action Alternative and Alternative B4 2,32020TotalAboveDNL65 dB>75 dB70 to75 dB65 to70 dB60 to65 dB0 47 160 207 3290 0 0 0 2230 47 160 207 5520 47 362 409 -­Net Population ChangePopulation by DNL value, Population by DNL value, No-Action Alternative andNo-Action Alternative 1 Alternative B4 2,3,4 Alternative B4 2,3,42025 2025 2025TotalTotalAboveAboveDNLDNL65 dB65 dBTotalAboveDNL65 dBCity>75dB70 to75 dB65 to70 dB60 to65 dB >75 dB70 to75 dB65 to70 dB60 to65 dB >75 dB70 to75 dB65 to70 dB60 to65 dBWarwick 0 7 3,316 3,323 11,040 0 14 3,290 3,304 11,200 0 7 -26 -19 160Cranston 0 0 0 0 336 0 0 0 0 529 0 0 0 0 193Total 0 7 3,316 3,323 11,376 0 14 3,290 3,304 11,729 0 7 -26 -19 353SignificantNoiseIncrease 5 -­ -­ -­ -­ -­ 0 2 251 254 -­ 0 2 251 254 -­Source: HMMH, 2011.Note: Some numbers may not add up due to rounding.1 Excludes 658 people who have been relocated under the Completed Part 150 VLAP and 317 people which would be relocated under the Current Part 150 VLAPfor a total of 975 people relocated due to both programs (to be completed by 2015).2 All Alternative B4 counts have excluded people relocated due to non-noise related land acquisition, including 26 people that would be relocated due toconstruction acquisitions and 141 people would be eligible for relocation due to acquisition for the newly created RPZ.3 For 2020 and 2025, the five additional people that would be relocated due to land acquisition as noise mitigation for noise impacts in 2015 have been excluded fromthe impacted unit counts.4 For 2025, the 157 additional people that would be relocated due to land acquisition as noise mitigation for noise impacts in 2020 making have been excluded fromthe impacted unit count.5 Represents the number of housing units and non-residential noise-sensitive sites affected by significant noise levels during a specific year and are not cumulative.Significant Aircraft Noise Impacts – 2020 and 2025: In 2020 under Alternative B4, 174 housing units (an estimateof 409 people) within the DNL 65 dB contour are projected to experience a significant increase in noise levels(increase of at least DNL 1.5 dB at or above DNL 65 dB) and none would experience a slight to moderateincrease (DNL 3.0 dB or more between DNL 60 dB and 65 dB noise levels). In 2025, one housing unit (anestimate of two people) within the DNL 70 dB contour and 107 housing units (an estimated 251 people) betweenDNL 65 to 70 dB contours are projected to experience a significant increase and none would experience a slightto moderate increase. Figure 5-16 shows areas of significant noise exposure when comparing Alternative B4 tothe No-Action Alternative in 2020 and 2025. Those residences exposed to significant noise levels would beeligible for sound insulation mitigation.Chapter 5 - Environmental Consequences 5-35 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc