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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

    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 AirportFolder2025-Q2
  • 2025-08-12

    Sea-Tac Airport ADF Sources and Uses Summary — 2025 Forecast vs. Budget (Page 251)

    This slide (page 251 of 292) presents the Airport Development Fund (ADF) Sources and Uses summary for Seattle-Tacoma International Airport, comparing 2025 forecast against 2025 budget. Key figures include a 1/1/2025 ADF balance of $739,774K (forecast) vs. $703,614K (budget), total sources of $957,838K, total uses of $(867,612)K, and a projected 12/31/2025 ADF balance of $830,000K, meeting the 18-month operating expense target.
    TagsAirport Development Fund, Budget, Port Of Seattle, Sea-Tac AirportFolder2025-Q2
  • 2025-08-12

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

    This document is the agenda for the Port of Seattle Regular Commission Meeting held on August 12, 2025, covering routine administrative and operational business such as approval of meeting minutes, claims and obligations totaling over $143 million, and collective bargaining agreements. The meeting also included authorization requests for aviation planning services contracts at Seattle-Tacoma International Airport and various capital projects. No specific noise policy items or Sea-Tac Airport noise mitigation measures appear on this particular agenda.
    TagsLabor, Port Of Seattle, Port Of Seattle Commission, Sea-Tac AirportFolder2025
  • 2025-08-12

    Non-Aero Detail: AVBP Revenue Trends — Port Of Seattle Regional Meeting Packet (Page 250)

    A presentation slide titled 'Non-Aero Detail: AVBP Revenue Trends' (page 250 of 292) showing Airport Business & Properties segment revenues from 2019 through 2025 forecast/budget. Two charts display revenue trends by segment (Flight Kitchens, Other Airport Properties, CLEAR, Clubs & Lounges) and total airport properties revenues, noting that combined revenues surpassed 2019 levels in 2023 and that growth will continue in 2025 with the addition of the International Place (STOC) property.
    TagsAirport Highlights, Port Of Seattle, Presentation, Sea-Tac AirportFolder2025-Q2
  • 2025-08-12

    Sea-Tac Airport ADR Revenue Trends by Segment, 2019–2025 — Slide 249

    A presentation slide titled 'Non-Aero Detail: ADR Revenue Trends' showing Airport Dining & Retail revenue data for Seattle-Tacoma International Airport from 2019 through 2025, including segment breakdowns (Duty Free, Food & Beverage, Retail, Services, Advertising, Other) and total ADR revenues by year. The slide notes that 2025 revenue growth is slower than the 2025 Budget forecast, with the budget target appearing to reach approximately $75-80M.
    TagsBudget, Port Of Seattle, Presentation, Sea-Tac AirportFolder2025-Q2
  • 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 Public Parking Transactions by Category, 2019–2025 Forecast and Budget — RM Packet Page 248

    This slide (page 248 of 292) presents public parking transaction data at Seattle-Tacoma International Airport broken down by Pre-Booked/Reserved and Total Drive-Up categories from 2019 through 2025 forecast and budget projections. Transactions dropped to 0.8M in 2020 during the pandemic, recovered to 2.1M by 2024, with 2025 annual growth expected to be slightly below 2024 levels.
    TagsForecast, Parking, Port Of Seattle, Sea-Tac AirportFolder2025-Q2
  • 2025-08-11

    Part 150 Study Technical Review Committee: Meeting #4 Agenda, August 11, 2025

    This document is the agenda and attendance record for the fourth meeting of the Part 150 Study Technical Review Committee, held on August 11, 2025, at Seattle-Tacoma International Airport. The meeting covered updates on Phase 1 Noise Exposure Mapping, a kickoff for Phase 2 Noise Compatibility Program planning, and a review of the project schedule. Representatives from neighboring cities, airlines, King County, the FAA, and the Port of Seattle participated as members or liaisons.
    TagsFAA, Noise Exposure Update, Part 150, Port Of Seattle, Sea-Tac AirportFolderTRC
  • 2025-08-08

    Acoustical Testing Results for SIRRPP — August 2025

    This August 2025 technical report by Harris Miller Miller & Hanson Inc. (HMMH) presents the results of interior sound insulation testing conducted at 28 homes near Seattle-Tacoma International Airport (SEA) in July 2025. Using FAA-approved measurement methods, acoustical engineers tested every habitable room in each home to determine how much aircraft noise penetrates indoors, with a threshold of 45 decibels (dB) required for a home to qualify for sound insulation assistance. Of the 28 structures tested, only two met the 45 dB qualification threshold, while nine others had at least one room exceeding that level but did not qualify under current FAA policy.
    TagsFAA, HMMH, Noise Mitigation, Sea-Tac Airport, SIRRPP, Sound InsulationFolderSIRRPP HMMH Acoustic Testing
  • 2025-08-01

    Report on Sea-Tac IWTP – AGB Site, Seattle-Tacoma International Airport, Sea-Tac, Washington

    This August 2025 draft report by Haley & Aldrich, Inc., prepared for the Port of Seattle, presents geotechnical and hydrogeological findings for the Industrial Wastewater Treatment Plant (IWTP) Above Ground Basin (AGB) site at Seattle-Tacoma International Airport. The report covers subsurface soil and groundwater conditions, seismic hazard assessments, and engineering design recommendations for elements such as slopes, embankments, and excavation support. It serves as a technical reference to guide construction and infrastructure decisions at the airport site.
    TagsEnvironment, Port Of Seattle, Sea-Tac Airport, soilFolderGrid

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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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