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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) Evaluation6.21.1.2 Mitigation for Other Noise Impacts for Alternative B2In comparison to Alternative B4, the number of homes eligible for acquisition in a Future Build VLAP for noisemitigation (exposed to noise levels at or above DNL 70 dB consistent with Part 150) would be half as many withAlternative B2 (36 units under Alternative B2 verses 69 units under Alternative B4). This is due to the highernumber of residential parcels that would be acquired for construction for Alternative B2, including for FullyRelocated Airport Road, which is not proposed under Alternative B4, thus reducing the number of parcels thatwould be exposed to noise levels at or above DNL 70 dB.In comparison to Alternative B4, in 2015, Alternative B2 would not expose residential units to noise levelsbetween DNL 65 dB and DNL 69 dB and, therefore, no residents would be eligible for sound insulation, inaccordance with Part 150 criteria. In 2020 and 2025 under Alternative B2, the number of newly eligible residentsfor sound insulation mitigation would be comparable to Alternative B4 (131 units in 2020 and 299 units in 2025under Alternative B2 versus 157 units in 2020 and 324 units in 2025 under Alternative B4, as presented in Table6-6). For Alternative B2, through 2025, a total of 299 housing units would be newly eligible for Project-relatednoise mitigation (sound insulation) due to noise impacts (zero units in 2015, 131 units in 2020, and168 additional units in 2025) compared to 324 units total under Alternative B4.6.21.2 Compatible Land UseAs discussed previously in Section 6.3, Compatible Land Use, like for Alternative B4, compatible land usemitigation for Alternative B2 would be related to significant noise impacts, as identified by FAA Order 1050.1E,and to other increases in noise, in accordance with the Part 150 NCP as well as land acquisition.6.21.2.1 Mitigation for Significant Compatible Land Use Impacts for Alternative B2Refer to Section 6.2, Noise, for the significant noise impacts and required mitigation associated withAlternative B2 as compared to Alternative B4. As discussed in Section 6.2, Noise, mitigation in the form of soundinsulation is proposed for incompatible land uses (residential) and non-residential noise-sensitive sites (e.g.,schools) that would be exposed to a significant increase in noise as a result of the T.F. Green AirportImprovement Program. Commercial, industrial, and agricultural uses are considered to be compatible with allnoise levels and do not require noise level reduction measures.6.21.2.2 Mitigation for Other Compatible Land Use Impacts for Alternative B2As with Alternative B4, other compatible land use impacts and proposed mitigation for Alternative B2addressed in this section are associated with changes to land use due to land acquisition for the T.F. GreenAirport Improvement Program.Compatible land use mitigation proposed for other land use impacts under Alternative B2 include the following:• See Section 6.21.1, Noise, for potential noise mitigation (in the form of sound insulation and land acquisitionconsistent with the criteria of Part 150) for other compatible land use (aircraft noise impacts).• See Section 6.21.3, Social and Socioeconomic, and Environmental Justice and Children’s Health and Safety Risks, forrequired mitigation for mandatory land acquisition due to construction.Chapter 6 – Mitigation 6-45 July 2011\\Mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH06_Mitigation_JUL_2011.doc