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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.

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  • 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 AirportFolderStatistics
  • 2025-10-14

    Aviation Division 2026 proposed operating & capital budgets

    The Port of Seattle held a Special Commission Study Session on October 14, 2025, focused on the Seattle-Tacoma International Airport (SEA) Aviation Division's proposed operating and capital budgets for 2026. The meeting, open to the public at Port of Seattle Headquarters and available remotely, was attended by five commissioners and ran from 9:00 to 10:15 a.m. The session provided an overview of planned financial and infrastructure investments for the aviation division in the coming year.
    TagsBudget, Port Of Seattle, Port Of Seattle Commission, Presentation, Sea-Tac AirportFolder2025
  • 2025-10-14

    Sea-Tac 2026 Budget CPE Comparison Across Large-Hub Airports

    Slide 54 (page 56 of 95) from a Seattle-Tacoma International Airport (SEA) presentation compares 2026 forecast Cost per Enplanement (CPE) across five large-hub airports: DEN ($17.05), LAX ($37.60), ORD ($29.08), SEA ($21.10), and SFO ($29.03). Sources are cited as 2026 Budget documents or Preliminary Official Statements on bond issuance.
    TagsAirline Industry, Budget, Forecast, Sea-Tac AirportFolderStatistics
  • Sea-Tac Airport Budget Summary and Key Indicators, 2023–2026

    A financial summary slide presenting Seattle-Tacoma International Airport's budget data from 2023 actuals through the 2026 proposed budget, showing operating revenues projected to reach $982,884 thousand and capital expenditures of $835,887 thousand in 2026. Key indicators include Cost Per Enplanement (CPE) rising to $21.10, enplaned passengers of 27,031 thousand, and a 16.5% increase in capital expenditures from the 2025 approved budget.
    TagsBudget, Port Of Seattle, Sea-Tac AirportFolderFinance
  • 2025-09-23

    Port Of Seattle regular commission meeting agenda, September 23, 2025

    The Port of Seattle held a Regular Commission Meeting on September 23, 2025, covering routine business including approval of meeting minutes, claims totaling approximately $141 million, and personnel matters. A key action item was authorization for the Executive Director to renew a Bonneville Power Administration contract to supply electrical power to Seattle-Tacoma International Airport from 2028 through 2044, estimated at $150 million. The meeting also included a briefing on the 2026 preliminary budget rollup for Port-wide central services.
    TagsBudget, Labor, Port Of Seattle, Port Of Seattle Commission, Sea-Tac AirportFolder2025
  • 2025-09-23

    Port Of Seattle Community Programs Funded by Tax Levy 2023–2026

    A budget table from Port of Seattle document page 89 of 95 showing community programs funded by tax levy from 2023 through 2026, with a grand total rising from $12,193,000 in 2023 to $14,426,000 in 2026 (an 8.6% increase from 2025). Programs include South King and Port Communities Fund, Duwamish Valley Community Equity Program, EDD Partnership Grants, City of SeaTac Community Relief, Maritime Blue, Workforce Development, and others relevant to Sea-Tac Airport area communities.
    TagsBudget, Community Development Program, Port Of Seattle, South King County Fund, Tax LevyFolderCommission
  • 2025-09-23

    Port Strategic Budgeting Slide – Century Agenda Financial Framework

    A presentation slide titled 'Long-term Success Requires Strategic Budgeting' outlines the Port's financial strategy, including a feedback loop between the Century Agenda and budget development, noting that approximately $1 million in added expense equals $10 million less capital capacity. The slide emphasizes slowing operating expense growth and improving capital capacity to address environmental remediation, aging facilities, and slower revenue growth. Source document is page 41 of 95.
    TagsBudget, Century Agenda, Port Of Seattle, Port Of Seattle CommissionFolderCommission
  • 2025-09-01

    PSRC Fiscal years 2026-2027 biennial budget and work plan: July 2025 – June 2027

    This document is the Puget Sound Regional Council's Fiscal Years 2026–2027 Biennial Budget and Work Plan, covering July 2025 through June 2027, which outlines the agency's revenues, expenditures, staffing, and regional planning priorities for the greater Seattle–Tacoma area. It includes demographic data on population, housing, and employment growth across member jurisdictions, along with financial tables and an integrated planning timeline. Note that this budget document does not address Sea-Tac Airport noise policy; researchers seeking noise-related planning materials should consult dedicated airport or environmental planning resources.
    TagsBudget, PSRC, Puget Sound, Puget Sound Regional Council, work planFolderPuget Sound Regional Council
  • 2025-08-12

    Airport Development Fund Balance

    ★
    A Microsoft Teams screen share from the Port of Seattle Commission Regular Meeting (P69) shows a slide titled 'Airport Development Fund Balance,' displaying a bar chart with a beginning balance of $739,774 thousand, an ending balance forecast of $830,000 thousand, and a budget of $829,833 thousand, with a bullet noting the $830M ending balance equals 18 months of O&M in 2025. The presenter identified in the lower caption bar is Payne, Aubree, and the meeting timestamp reads 3:00:05 with a system clock of 1:14 PM on 8/12/2025.
    CategoriesKey Documents TagsAirport Committees, Airport Development Fund, Budget, Port Of Seattle, Port Of Seattle Commission, Sea-Tac AirportFolderStatistics
  • 2025-08-12

    Sea-Tac Airport Development Fund Balance — Financial Presentation (Page 214)

    A bar chart from a Sea-Tac Airport financial presentation (page 214 of 292) showing the Airport Development Fund Balance with a beginning balance of $739,774 thousand, an ending balance forecast of $830,000 thousand, and a budget of $829,833 thousand. The slide notes the ending balance forecast of $830M meets the target of 18 months of O&M in 2025.
    TagsAirport Development Fund, Budget, Port Of Seattle, Sea-Tac AirportFolder2025-Q2

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Upcoming Events

  • Part 150 NCP Workshop — Burien
    Add to CalendarMSaturday Oct 17: 10:00am

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — SeaTac
    Add to CalendarMMonday Oct 19: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — Des Moines
    Add to CalendarMTuesday Oct 20: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]

[See all...]


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.
read more...

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.
continue...

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