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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.

TagAirport Expansion(171)

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  • 2025-10-28

    Sea-Tac Airport Airport Snow Storage Expansion Diagram

    ★
    Aerial satellite map of showing two annotated snow storage areas: 'Completed Snow Storage Expansion Phase I' along the south airfield and 'Snow Storage Expansion Phase II by Lagoon 3' on the west side, with green arrows indicating access routes between locations.
    CategoriesKey Documents TagsAirport Expansion, Airport Layout Plans, Map, Port Of Seattle, SAMP, Sea-Tac Airport
  • 2025-10-28

    Port of Seattle Regular Commission Meeting

    ★
    The Port of Seattle held a Regular Commission Meeting on October 28, 2025, covering routine business such as approval of meeting minutes, claims totaling over $156 million, and several construction and lease authorizations related to Seattle-Tacoma International Airport facilities. Agenda items included contracts for snow storage expansion, a building renovation at Sea-Tac, and a cruise terminal lease agreement. The commission also considered a resolution reaffirming the Port's Welcoming Port Policy in support of immigrants, refugees, and international visitors.
    CategoriesKey Documents, Meetings TagsAirport, Airport Committees, Airport Development Fund, Airport Expansion, Port Of Seattle
  • 2025-10-22

    Programmatic Environmental Checklist – Seattle-Tacoma International Airport Flight Corridor Management Program

    ★
    Environmental checklist for SEA’s Flight Corridor Management Program, which identifies and removes tree obstructions from airport flight corridors every five years to comply with FAA regulations. The document outlines the program’s background, implementation cycles, and environmental review process.
    CategoriesKey Documents TagsAirport, Airport Expansion, FAA, Port Of Seattle, SEPA
  • 2024-01-01

    Flight Corridor Safety Program 2024 – Category III Selection Summary

    ★
    Selection summary for the Flight Corridor Safety Program at Seattle-Tacoma International Airport, evaluating four firms (AECOM, HNTB, Jacobs Engineering, RS&H) for a $2M contract to manage obstructions consisting of trees and vegetation around the airport. HNTB was awarded the contract after receiving outstanding ratings across all criteria.
    CategoriesKey Documents TagsAirport, Airport Expansion, Aviation Committees, Port Of Seattle
  • 2002-06-03

    Legal Analysis of King County’s Role in Des Moines Beach Park Conveyor Belt Proposal

    ★
    Legal counsel James L. Brewer analyzes King County’s jurisdictional authority regarding a proposed fill material conveyor belt operation at Des Moines Beach Park. The memo examines property interests, covenants requiring park use only, and concludes the proposed 30-month project would be inconsistent with park purposes due to significant disruption.
    CategoriesKey Documents, Litigation TagsAirport Communities Coalition, Airport Expansion, airport issues, Conveyor, King County Council
  • 2002-05-01

    Financial Analysis For Redevelopment of Northeast Burien Special Plan Area

    ★
    A financial analysis report prepared by Economic Consulting Services for the City of Burien regarding the redevelopment of the Northeast Burien Special Plan Area. The report was completed in May 2002 and includes economic analysis and consulting services for the redevelopment project.
    CategoriesKey Documents TagsAirport, Airport Development Fund, Airport Expansion
  • 1996-03-27

    Final Decision on Noise Issues – Expert Arbitration Panel’s Review of Sea-Tac International Airport

    ★
    In March 1996, an Expert Arbitration Panel reviewed whether the Port of Seattle had met noise reduction requirements set by the Puget Sound Regional Council as a condition for approving a third runway at Sea-Tac International Airport. A majority of the Panel concluded that, despite the Port's extensive noise abatement programs, it had not demonstrated a sufficient reduction in real, on-the-ground noise impacts to satisfy Resolution A-93-03. This decision left the noise condition as the sole remaining hurdle for authorizing the third runway's construction.
    CategoriesHistory, Key Documents, Litigation TagsAircraft Maintenance, Airport Communities Coalition, Airport Expansion, airport issues, Airport Noise Law, Port Of Seattle, PSRC
  • 1982-07-27

    Detailed Analysis of Airspace Interactions – Chapter 6

    ★ 33
    Technical analysis of airspace interactions between Sea-Tac Airport and Boeing Field, examining runway capacity models, aircraft delay calculations, and the effects of airspace interactions on airport operations. The document presents detailed capacity and delay calculations using computerized models.
    CategoriesKey Documents TagsAir Traffic Control, Airport, Airport Expansion, Airspace Study, Peat Marwick Mitchell
  • 1981-12-10

    Boeing Headquarters Memo of Understanding – Port of Seattle Letter

    ★ 32
    Letter from Port of Seattle Director of Aviation Oris Dunham to King County Council Chairman Paul Barden regarding a Memo of Understanding for Boeing Headquarters project at Sea-Tac International Airport. Includes discussion of rezoning approval following favorable Washington State Supreme Court ruling.
    CategoriesCorrespondence, History, Key Documents TagsAirport, Airport Expansion, Boeing, Litigation, Port Of Seattle
  • 1968-07-01

    Building the Seattle-Tacoma Air Gateway

    ★ 31
    A 1968 report analyzing the development of Seattle-Tacoma International Airport as an air transportation hub. The document examines air traffic growth patterns, airline service routes, and the evolution of commercial aviation at Sea-Tac from 1958-1967, showing dramatic increases in passengers, cargo, and aircraft movements.
    CategoriesHistory, Key Documents TagsAirline Industry, Airport, Airport Expansion, Aviation Committees, Port Of Seattle

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  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
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    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

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    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
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    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

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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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