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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.

Tagcapital improvements(27)

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  • UpgradeSEA map Upgrademain
    2026-04-23

    Upgrade SEA Airport Improvement Map

    An aerial overview of Seattle-Tacoma International Airport annotated with labeled capital improvement projects under the 'Upgrade SEA' program, including C Concourse Expansion, S Concourse Evolution, Concourse A Building Expansion for Lounges, SEA Gateway, Main Terminal Improvements Program, Baggage Optimization, Checkpoint 1 Relocation, Automated Parking Guidance System, Restroom Renovation, Roadway Improvements, Curbside Accessibility and Safety, and SEA Underground Controls Replacement. The Upgrade SEA diamond logo is visible in the lower left corner.
    TagsAirport Expansion, capital improvements, Map, Sea-Tac Airport
  • 2025-10-28

    Airport Capital Spending (2025 $)

    A line graph showing CPI-adjusted airport capital spending in millions of 2025 dollars from 1998 through 2030 (with years 2025–2030 as forecasts), alongside a flat orange reference line representing average real spending from 1998–2024 at approximately $470 million. Spending peaked around 2002–2005 near $800 million, dropped to a low near $125 million in 2012, recovered to approximately $750 million by 2018–2019, and is forecast to peak near $975 million around 2027 before declining.
    CategoriesExplainers TagsAIP, Airport Expansion, Airport Improvement Program, Budget, capital improvements, Forecast, Sea-Tac Airport
  • 2025-08-12

    Sea-Tac Airport 2025 Capital Expenditures Financial Summary — RM Packet Page 252

    A financial summary table from what appears to be a Seattle-Tacoma International Airport board or budget report (page 252 of 292) detailing 2025 capital expenditures, showing projects including C Concourse Expansion, SEA Gateway, Post IAF Airline Realignment, and others, with total spending of approximately $806.9M forecast against a $816.3M budget. Footnotes explain variances for each major project.
    TagsAirport Expansion, Budget, capital improvements, Port Of Seattle, Sea-Tac Airport
  • 2024-11-14

    Port Of Seattle signatory lease and operating agreement 2025–2034

    This is a draft Signatory Lease and Operating Agreement between the Port of Seattle and participating airlines for the operation of Seattle-Tacoma International Airport, covering the period 2025 through 2034. The agreement outlines the terms under which airlines may use airport facilities including gates, terminals, airfields, baggage systems, and ticket counters, along with the associated rates and fees for each. It also establishes airline rights and responsibilities regarding capital improvements, gate assignments, and facility use at Sea-Tac Airport.
    Tagscapital improvements, Port Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2024-11-14

    Port Of Seattle signatory lease and operating agreement 2025–2034

    A draft signatory lease and operating agreement between the Port of Seattle and airlines operating at Seattle-Tacoma International Airport, covering the period 2025 to 2034. The document outlines rights to use airport facilities including airfield, gates, terminal areas, and other premises, as well as detailed provisions for calculation of rates and charges. It was prepared
    Tagscapital improvements, Port Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2024-09-26

    Des Moines City Council regular meeting agenda – September 26, 2024

    The Des Moines, Washington City Council held a regular meeting on September 26, 2024, covering a range of local government matters including approval of payment vouchers totaling over $3.3 million, municipal court agreements, and a public hearing regarding the Des Moines Creek Business Park West property sale. The council also considered a resolution opposing Initiative Measure No. 2117 on carbon tax credit trading and a resolution supporting Proposition 1, a Public Safety Levy Lid Lift. Note: this agenda does not contain content directly related to Sea-Tac Airport noise policy.
    CategoriesMeetings Tagscapital improvements, city council, City Of Des Moines, local government, Public Safety
  • 2024-07-11

    Des Moines City Council regular meeting agenda – July 11, 2024

    The Des Moines, Washington City Council held a regular meeting on July 11, 2024, covering routine financial approvals totaling over $1 million in vouchers and payroll, as well as public works contracts for a Redondo Restroom Replacement Project valued at approximately $2.35 million. The council also considered naming a Marina District alleyway 'Backstage Alley' and establishing a commemorative street name of 'Waterland Way.' No agenda items specifically related to Sea-Tac Airport noise policy were included in this meeting.
    CategoriesMeetings Tagscapital improvements, city council, City Of Des Moines, Des Moines, local government
  • 2023-01-26

    Port Of Seattle 2023-2027 Capital Improvement Program presentation to SAME

    The Port of Seattle presented its 2023–2027 Capital Improvement Program on January 26, 2023, outlining planned infrastructure investments across its Aviation, Maritime, Economic Development, and NW Seaport Alliance divisions. The presentation covered recently completed projects, projects currently underway, and upcoming projects with consulting opportunities. The Port oversees Seattle-Tacoma International Airport — the 9th busiest airport in the United States — along with cruise terminals, marinas, and cargo facilities.
    Tagscapital improvements, Maritime, Port Of Seattle, Presentation, Sea-Tac Airport, Society of American Military Engineers
  • Port of seattle pdf
    2023-01-26

    Port Of Seattle 2023-2027 Capital Improvement Program presentation to SAME

    The Port of Seattle presented its 2023–2027 Capital Improvement Program on January 26, 2023, outlining planned infrastructure investments across its Aviation, Maritime, Economic Development, and NW Seaport Alliance divisions. The presentation covered recently completed projects, projects currently underway, and upcoming projects with consulting opportunities. The Port oversees Seattle-Tacoma International Airport — the 9th busiest airport in the United States — along with cruise terminals, marinas, and cargo facilities.
    Tagscapital improvements, Maritime, Port Of Seattle, Presentation, Sea-Tac Airport
  • 2023-01-01

    2023 budget in brief

    The Port of Seattle's 2023 Budget in Brief outlines a $5.3 billion five-year capital plan covering aviation, maritime, and economic development, with the airport receiving $4.6 billion for safety, accessibility, and sustainability improvements at Seattle-Tacoma International Airport. The budget prioritizes workforce investment, community equity programs totaling $19.1 million, and environmental initiatives including decarbonization efforts aimed at eliminating carbon emissions from Port-owned sources by 2040. While the document focuses broadly on Port operations and finance, it does not specifically address SEA noise policy or noise mitigation programs.
    TagsBudget, capital improvements, Maritime, Port Of Seattle, Sea-Tac Airport

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Upcoming Events

  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
    Zoom (Virtual Meeting)
    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

    [...]
  • Commercial Aviation Work Group
    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
    Virtual Meeting (Zoom)
    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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