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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationNotes: Refer to Table 5-132 of Chapter 5, Environmental Consequences, for a summary of other environmental consequences by alternative. No mitigation for otherenvironmental consequences is required for the other environmental impact categories, including: Air Quality; Historic, Architectural, Archaeological, and CulturalResources; Section 4(f) Resources; Fish, Wildlife, and Plants; Threatened and Endangered Species; Farmlands; Light Emissions and Visual Environment; andNatural Resources and Energy Supply.RIHRA Rhode Island Historic Resource Archive.RICRMC Rhode Island Coastal Resources Management Council.1 According to the relocation process specified by the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970, as amended (42 USCsection 4601, et. seq.,). For the purposes of this FEIS, it is assumed for Alternative B2 that residential properties would be acquired between 2020 and 2025 fornoise impacts in 2020, and it is assumed that for Alternative B4, that residential properties would be acquired between 2015 and 2020 for noise impacts in 2015,and between 2020 and 2025 for noise impacts in 2020; however, it is RIAC’s intention to acquire residential parcels as soon as 2012 for both Alternatives, subject toavailability of funding.2 Assuming that FAA funding is made available, RIAC would begin the sound insulation program following the last phase of project-related land acquisition mitigation.3 Refer to Section 5.17.1, Regulatory Context, of Chapter 5, Environmental Consequences, for the applicable local, state, and federal laws and regulations thatgovern hazardous materials and solid waste.4 Refer to Table 6-16 for a summary of proposed mitigation measures related to construction activities.The following sections describe the proposed mitigation of the Preferred Alternative, which is also the ProposedAction, including additional detail than previously provided in the DEIS. This is followed by a description ofproposed mitigation for Alternative B2, highlighting the difference between the two alternatives.6.2 NoiseThe Preferred Alternative, Alternative B4, was specifically developed to minimize the extent of the impacts tothe community including avoiding a full relocation of Airport Road with its associate mandatory acquisitionsfor construction and traffic noise. Alternative B4 minimizes the extent of the noise impacts to the north of theAirport more than Alternative B2 because it would extend the Runway 5 End (to the south) only. Noisemitigation is proposed for significant increases in aircraft noise levels and other noise impacts from both aircraftand vehicular traffic and includes the following measures.Mitigation for Significant Noise Impacts for Alternative B4:• Provide sound insulation for residences that would experience a noise increase of at least DNL 1.5 dB at orabove DNL 65 dB when compared to the No-Action Alternative for the same timeframe.• Provide sound insulation for sensitive receptors that have not previously been sound insulated (Jehovah’sWitnesses of Warwick).Mitigation for Other Noise Impacts for Alternative B4:• Continue implementation of ongoing noise compatibility measures for airport operations.• Acquire residential parcels exposed to noise levels of DNL 70 dB and above through participation in avoluntary land acquisition program. This area was expanded to include more homes based on thecommunity’s comments on the DEIS.• Provide sound insulation for residences exposed to noise levels between DNL 65 dB and 69 dB. 469469 Includes homes exposed to noise levels up to DNL 69.9 dB.Chapter 6 – Mitigation 6-5 July 2011\\Mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH06_Mitigation_JUL_2011.doc