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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.

TagPort Of Seattle(2609)

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  • 2025-08-22

    SEA Offers Travel Tips for Final Weekend of Record Setting Summer

    Checkpoint changes, north end ticketing options, plus new treats to enjoy. Plan ahead August 22, 2025 A record-setting summer is coming down to its final weekend as the Labor Day holiday approaches at Seattle-Tacoma International Airport (SEA). Since June, multiple records have been set for overall and international passenger levels while travelers who haven’t been
    CategoriesFrom The Web, News Stories TagsPort Of Seattle, Press Release, Sea-Tac Airport
  • 2025-08-21

    SEPA Determination of Non-Significance: Sea-Tac Airport Flight Corridor Management Program (POS SEPA No. 2025-05)

    The Port of Seattle has issued a Determination of Non-Significance (DNS) under Washington's State Environmental Policy Act (SEPA) for its Flight Corridor Management Program at Seattle-Tacoma International Airport. The program, conducted approximately every five years, identifies and removes trees and other obstructions near the airport's runways that could interfere with flight paths, while also requiring ongoing ecological monitoring and tree replacement. A 15-day public comment period ran through September 11, 2025, after which the Port planned to formally adopt the determination, with any appeals required to be filed in King County Superior Court within 21 days of formal adoption.
    TagsFlight Corridor Safety Program, Port Of Seattle, Sea-Tac Airport, SEPA, Trees
  • 2025-08-21

    SEPA Determination of Non-Significance: Sea-Tac Airport Flight Corridor Management Program (POS SEPA No. 2025-05)

    Port of Seattle SEPA Determination of Non-Significance (DNS), POS SEPA File No. 2025-05, issued August 21, 2025, for the Flight Corridor Management Program at Seattle-Tacoma International Airport (SEA). The Program identifies and removes obstructions — primarily trees — within and around Runway Protection Zones for runways 34R/16L and 34L/16R, extending 1,500 feet east/west and 3,500
    TagsFlight Corridor Safety Program, Port Of Seattle, Sea-Tac Airport, SEPA, Trees
  • 2025-08-20

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

    The Port of Seattle's Flight Corridor Management Program is an ongoing effort to identify and remove trees near Seattle-Tacoma International Airport (SEA) that obstruct the flight paths of its three parallel runways, as required by FAA regulations. Approximately every five years, the Port surveys the area, removes obstructing trees, and replants replacements, with each cycle documented in publicly available Implementation Plans and Regulatory Memoranda. This 2025 programmatic environmental review under Washington's State Environmental Policy Act (SEPA) covers the long-term program rather than individual removal projects.
    TagsFlight Corridor Safety Program, Port Of Seattle, Sea-Tac Airport, SEPA, Trees
  • 2025-08-20

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

    Port of Seattle SEPA File No. 2025-05, programmatic environmental checklist prepared August 20, 2025 for the Sea-Tac Airport Flight Corridor Management Program. Documents the FAA-mandated tree obstruction removal program required under 49 U.S.C. Subtitle VII and 14 CFR Part 139 for SEA’s three parallel runways. Covers four obstruction categories — current obstructions, incidental trees, future
    TagsFlight Corridor Safety Program, Port Of Seattle, Sea-Tac Airport, SEPA, Trees
  • Port Properties and Trees GIS

    A map centered on Seattle-Tacoma International Airport (Sea-Tac) showing clusters of red circles and green dots overlaid on the airport and surrounding communities including Burien, SeaTac, Tukwila, and Normandy Park. The blue outlined polygon appears to delineate a municipal or study boundary, and the red/green markers likely represent noise complaint locations or flight track data points used in airport noise policy analysis.
    TagsMap, Port Of Seattle, Sea-Tac Airport, Trees
  • 2025-08-12

    At the heart of Seattle’s waterfront is its working port

    By Fred Felleman and Steve Metruck Special to The Seattle Times Change can be good in uncertain times — if we stay true to our core values. At Seattle’s core is our working waterfront. And the mayor and City Council have key roles to play in its future. Even while we continue to challenge the
    CategoriesFrom The Web, News Stories TagsEditorial, Port Of Seattle, Seattle Times
  • 2025-08-12

    Port Of Seattle Commission Regular Meeting — Q2 2025 YTD Operating Expenses Financial Summary (Slide 210)

    A financial summary slide showing Q2 2025 Year-To-Date operating expenses of $264M actual versus $273M budgeted, resulting in $9.2M or 3.4% under budget. Key variances include a $5M payroll overrun, $18M underspend in outside services, $6.4M higher other expenses, and $2.3M lower central services charges.
    TagsBudget, Port Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2025-08-12

    Port Of Seattle Commission regular meeting agenda, August 12, 2025

    Agenda for the Port of Seattle Commission Regular Meeting held on August 12, 2025, conducted both virtually via MS Teams and in person at Port of Seattle Headquarters. The agenda includes consent items covering approval of meeting minutes, claims and obligations totaling over $143 million, collective bargaining agreements with firefighters and teamsters unions, and authorizations
    TagsLabor, Port Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2025-08-12

    Sea-Tac Airport 2025 Passenger Forecast vs. Budget — RM Packet (Page 209)

    A bar chart from a Sea-Tac Airport budget/forecast presentation (page 209 of 292) showing actual total passengers from 2021 (36.2M) through 2024 (52.6M), alongside a 2025 budget of 53.5M and 2025 forecast of 53.1M. The slide notes a 0.9% forecast growth compared to 2024 actual, and that the 2025 forecast is 0.7% lower than budget.
    TagsBudget, Forecast, PAX, 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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