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STNI

STNISea-Tac Noise.Info

  • Solve for Sea-Tac. Solve for every airport.
  • Since 2016, working to obtain justice for everyone living under the flight path.
  • Less Noise. Cleaner Air. Better Public Health. Compensation.
  • Everything you think you know about the airport is wrong.

TagNEPA(144)

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  • 2025-09-01

    Finding of No Significant Impact/Record of Decision for the Sustainable Airport Master Plan Near-Term Projects at the seattle-tacoma international airport

    ★ 32
    FAA’s Finding of No Significant Impact and Record of Decision for the Sustainable Airport Master Plan Near-Term Projects at Seattle-Tacoma International Airport. The document provides final agency determinations and approvals for federal actions necessary to implement 31 near-term improvement projects addressing efficiency, safety, and passenger processing needs at SEA.
    CategoriesKey Documents TagsFAA, FONSI, NEPA, SAMP, Sea-Tac Airport
  • 2006-04-28

    National Environmental Policy Act (NEPA) implementing instructions for airport actions

    ★
    FAA Order 5050.4B, effective April 28, 2006, provides the Federal Aviation Administration's Office of Airports with instructions for evaluating the environmental impacts of major federal actions at public-use airports, in compliance with the National Environmental Policy Act (NEPA). It updates and replaces the previous Order 5050.4A ('Airports Environmental Handbook'), which had been in use for over 20 years. The order covers processes for analyzing environmental effects, including noise impacts, associated with airport development actions such as runway extensions and other airport improvements.
    CategoriesKey Documents TagsFAA, NEPA
  • 2005-06-24

    Guidance on the consideration of past actions in cumulative effects analysis

    ★ 32
    This 2005 memo from the White House Council on Environmental Quality instructs federal agencies on how to handle past actions when analyzing cumulative environmental impacts under the National Environmental Policy Act (NEPA). Agencies are not required to exhaustively catalog every past action, but must describe their current combined effects when those effects are relevant to a proposed action's foreseeable environmental impacts. The guidance emphasizes using the scoping process to focus analysis on truly significant cumulative effects rather than accumulating unnecessary background data.
    CategoriesKey Documents TagsCEQ, Council on Environmental Quality, Environmental Review, NEPA
  • 1997-05-07

    Final supplemental environmental impact statement: Proposed master plan update, Seattle-Tacoma International Airport

    ★ 32
    This Final Supplemental Environmental Impact Statement (FSEIS) evaluates proposed updates to the Master Plan for Seattle-Tacoma International Airport, examining the effects of revised aviation demand forecasts on runway capacity, safety improvements, and landside facilities. It analyzes a range of alternatives to address poor-weather airfield performance, runway length needs for Pacific Rim flights, and runway safety area compliance with FAA standards. The document also assesses environmental consequences including noise impacts on surrounding communities, air quality, wetlands, and construction effects.
    CategoriesKey Documents TagsEnvironmental Impact Statement, Master Plan, NEPA, Puget Sound Regional Council, Sea-Tac Airport
  • 2026-05-26

    Sustainable Airport Master Plan near-term projects: State Environmental Policy Act draft environmental impact statement and next steps

    The Port of Seattle presented a draft Environmental Impact Statement under Washington State's environmental review law (SEPA) for a set of near-term construction projects at Seattle-Tacoma International Airport. The projects, part of the Sustainable Airport Master Plan, include expansions and improvements such as new gates, taxiway extensions, a second terminal, cargo facilities, and roadway upgrades. The presentation outlined the environmental review process and next steps, including public outreach and engagement.
    TagsEnvironmental Impact Statement, NEPA, Port Of Seattle, SAMP, SEPA
  • 2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS pdf
    2026-05-26

    Sustainable Airport Master Plan near-term projects: State Environmental Policy Act draft environmental impact statement and next steps

    A Port of Seattle presentation to commissioners covering the Sustainable Airport Master Plan (SAMP) near-term projects, including updates on the National Environmental Policy Act Final Environmental Assessment and FAA Finding of No Significant Impact, and the State Environmental Policy Act Draft Environmental Impact Statement process. The presentation outlines the various near-term airport improvement projects and
    TagsEnvironmental Impact Statement, NEPA, Port Of Seattle, SAMP, SEPA
  • Burien airport committee 19 may 2026 agenda pdf pdf
    2026-05-19

    Burien Airport Committee

    - **SAMP SEPA EIS Planning Session** (30 min) – Full committee discussion - **StART Restructuring Proposal** (15 min) – Jeff Harbaugh and Joe Dusenbury from Des Moines Airport Advisory Committee - **NEPA Review Update** (5 min) – Bob Larson, Interim City Manager
    CategoriesEvents TagsBurien, Burien Airport Committee, NEPA, SAMP, StART
  • 2026-05-19

    Burien airport committee agenda and minutes

    The Burien Airport Committee is scheduled to meet on May 19, 2026, to discuss key aviation policy topics including a SAMP Environmental Impact Statement planning session, a proposed restructuring of the StART regional airport advisory group, and a NEPA review update. Draft minutes from the April 21, 2026 meeting show the committee also addressed the Port of Seattle's response to Burien's request for revisions to the Sound Insulation Program, with the committee expressing continued disagreement over the Port's criteria for qualifying homes for noise-reduction packages. Members of the public can participate in person at Burien City Hall, via Zoom, or by submitting written comments by email before 4:45 p.m. on the day of the meeting.
    Tagsbac_2026_05_19, Burien, Burien Airport Committee, NEPA, SAMP, StART
  • Burien airport committee 19 may 2026 agenda pdf pdf
    2026-05-19

    Burien airport committee agenda and minutes

    The Burien Airport Committee is scheduled to meet on May 19, 2026, to discuss key aviation policy topics including a SAMP Environmental Impact Statement planning session, a proposed restructuring of the StART regional airport advisory group, and a NEPA review update. Draft minutes from the April 21, 2026 meeting show the committee also addressed the Port of Seattle's response to Burien's request for revisions to the Sound Insulation Program, with the committee expressing continued disagreement over the Port's criteria for qualifying homes for noise-reduction packages. Members of the public can participate in person at Burien City Hall, via Zoom, or by submitting written comments by email before 4:45 p.m. on the day of the meeting.
    Tagsbac_2026_05_19, Burien, Burien Airport Committee, NEPA, SAMP, StART
  • SAMP FONSI ROD Finding of no significant impact record of decision for the sustainable airport master plan near term projects at the seattle tacoma international airport page 1

    Finding of no significant impactrecord of decision for the sustainable airport master plan near term projects at the seattle tacoma international airport page 1

    Cover page of a U.S. Department of Transportation Federal Aviation Administration Northwest Mountain Region document titled 'Finding of No Significant Impact/Record of Decision' for the Sustainable Airport Master Plan Near-Term Projects at Seattle-Tacoma International Airport, Seattle, Washington. The document bears project number EAXX-021-12-ARP-17297535477 and is dated September 2025.
    TagsFAA, FONSI, NEPA, SAMP, Sea-Tac Airport

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Issues

Sea-Tac Airport is currently undergoing the largest and longest expansion in its history, collectively known as the Sustainable Airport Master Plan (SAMP). Some of it you can already hear, but you’re probably not aware of what it all means. Here’s what you need to know.
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Read This!

As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.
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