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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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  • 2025-08-12

    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
  • 2025-07-03

    Sea-Tac Airport breaks record, expects 900K travelers over July 4 weekend

    The busiest day is expected to be Sunday, July 6, when passenger traffic could set a new single-day record at Sea-Tac Airport. The newly-added checkpoint at Sea-Tac Airport brings five security lanes. Author: KING 5 Staff SEATAC, Wash. — Seattle-Tacoma International Airport (SEA) is bracing for a surge in travelers over the July 4th holiday period,
    CategoriesFrom The Web, News Stories TagsKing5, Sea-Tac Airport
  • 2025-06-30

    Port Of Seattle Q2 2025 financial performance report

    The Port of Seattle's Q2 2025 Financial Performance Report, covering the period through June 30, 2025, shows Seattle-Tacoma International Airport (SEA) passenger volume running 1.6% above the same period in 2024, with approximately 53.1 million passengers projected for the full year. Portwide operating revenues came in $1.2 million above budget while operating expenses ran $12.8 million below budget, resulting in a net operating income before depreciation of $14.0 million above budget. The report covers financial results across the Aviation, Maritime, Economic Development, and Central Services divisions.
    TagsBudget, Maritime, Port Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2025-06-30

    Port Of Seattle Q2 2025 financial performance report

    The Port of Seattle’s Q2 2025 Financial Performance Report covers financial results through June 30, 2025, including portwide, aviation, maritime, economic development, and central services divisions. Total operating revenues were $1.2M above budget while operating expenses were $12.8M below budget, resulting in net operating income before depreciation of $14.0M above budget. The report also includes
    TagsBudget, Maritime, Port Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2025-06-26

    Environmental checklist: Seattle-Tacoma International Airport (SEA) Industrial Wastewater Treatment Plant (IWTP) Enhancement Project

    The Port of Seattle is proposing upgrades to Seattle-Tacoma International Airport's Industrial Wastewater Treatment Plant (IWTP) to better handle wastewater from aircraft deicing operations, with construction planned from 2026 to 2030. The project involves replacing aging treatment equipment at the existing facility and building a new aerated gravel bed (AGB) treatment system on a 10.6-acre site nearby to process high levels of biochemical oxygen demand (BOD) on-site. These upgrades are required to comply with tightening discharge limits set by King County and state environmental permits.
    TagsDeicing, NEPA, Port Of Seattle, Sea-Tac Airport, SEPA, Water Quality
  • SEPA iwtp project checklist august 6, 2025 signed pdf
    2025-06-26

    Environmental checklist: Seattle-Tacoma International Airport (SEA) Industrial Wastewater Treatment Plant (IWTP) Enhancement Project

    The Port of Seattle is proposing upgrades to Seattle-Tacoma International Airport's Industrial Wastewater Treatment Plant (IWTP) to better handle wastewater from aircraft deicing operations, with construction planned from 2026 to 2030. The project involves replacing aging treatment equipment at the existing facility and building a new aerated gravel bed (AGB) treatment system on a 10.6-acre site nearby to process high levels of biochemical oxygen demand (BOD) on-site. These upgrades are required to comply with tightening discharge limits set by King County and state environmental permits.
    TagsDeicing, NEPA, Port Of Seattle, Sea-Tac Airport, SEPA
  • 2025-06-24

    Port Of Seattle regular commission meeting agenda, June 24, 2025

    The Port of Seattle Commission held its regular meeting on June 24, 2025, covering a range of business items including airport infrastructure projects at Seattle-Tacoma International Airport. Of particular relevance to noise policy, the Commission considered authorizing a $250,000 contract with Maritime Blue for the Quiet Sound Program, a noise-reduction initiative that had been postponed from a May 2025 meeting. The agenda also included approval of capital improvement projects and routine financial obligations for the port.
    TagsPort Of Seattle, Port Of Seattle Commission, pos_rm_2025_01_14, Quiet Skies Puget Sound, Sea-Tac Airport
  • 2025-06-24

    Port Of Seattle regular commission meeting agenda, June 24, 2025

    Agenda for the Port of Seattle Regular Commission Meeting held on June 24, 2025, conducted both virtually via MS Teams and in person at Seattle-Tacoma International Airport. The agenda includes special orders recognizing Pride Month, consent agenda items covering meeting minutes, claims and obligations, and capital improvement project authorizations, as well as unfinished business regarding
    TagsPort Of Seattle, Port Of Seattle Commission, pos_rm_2025_01_14, Quiet Skies Puget Sound, Sea-Tac Airport
  • 2025-06-14

    June 14: Aircraft Incident

    Incident updates related to an aircraft on the runway at Seattle-Tacoma International Airport (SEA). Updates will be posted to this page as they become available. Updates June 14, 2025, 3:19 p.m. Runway 16R is expected to reopen shortly and SEA Airport will return to normal operations. Please continue to check in with your airline about
    CategoriesFrom The Web TagsSea-Tac Airport, Security, Travel Alert
  • 2025-06-14

    Airport Control Tower and Horizon Alaska Air Flight #2123 evacuation

    An Alaska Airlines aircraft tail fin with the carrier's distinctive Eskimo logo is visible at right, alongside an air traffic control tower at left. A group of people, including individuals with a dog and wearing high-visibility vests, walk along what appears to be an airport perimeter area.
    TagsAir Traffic Control, aircraft, Alaska Airlines, FAA Occurrences, 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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