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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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  • 2024-10-08

    Vianair Inc. invoice #1173 – Alexandria consulting, September 2024

    Vianair Inc. submitted Invoice #1173 to the City of Alexandria for $9,000 in consulting services covering September 2024, including noise analysis, software services and analysis, project management, and FAQs and survey review. The accompanying Monthly Status Report details 27.50 total hours worked by consultants Jim, Jason, and Vianair Software on the Alexandria (SoA) Project during the period of September 1–30, 2024. The invoice was recommended for approval by representatives from Fairfax County and Prince George's County governments and formally approved by Melissa Atwood, Senior Environmental Specialist for the City of Alexandria.
    TagsNoise, Sea-Tac Airport, VianairFolderVianair
  • 2024-10-08

    2025 Aviation Preliminary Budget Key Takeaways Slide

    A budget summary slide for the 2025 Aviation Preliminary Budget, covering revenues (9.4% increase, passenger volume exceeding 2019 levels), expenses (15.2% increase in operating expenses, 64 new FTEs), financial forecasts (debt service coverage at 1.82x, CPE of $19.57), and budget uncertainties including PFAS impacts, environmental remediation liability costs, and cyber incident impacts.
    TagsBudget, PFAS, Sea-Tac AirportFolderFinance
  • 2024-10-08

    2025 Aviation Preliminary Budget Key Takeaways Slide

    A budget presentation slide summarizing the 2025 Aviation Preliminary Budget, covering revenues (9.4% increase, passenger volume exceeding 2019 levels), expenses (15.2% increase in operating expenses, 64 new FTEs), financial forecast (debt service coverage at 1.82x, 18 months O&M cash on hand, CPE of $19.57), and budget uncertainties including PFAS impacts, environmental remediation liability costs, and cyber incident impacts. The slide number 053/51 suggests this is from a formal commission or port authority budget presentation.
    TagsBudget, PFAS, Port Of Seattle, Sea-Tac AirportFolderFinance
  • 2024-10-08

    Sea-Tac Airport Strong Operating Revenue Recovery — 2025 Budget Presentation (Page 18)

    A budget presentation slide titled 'Strong Operating Revenue Recovery' showing Seattle-Tacoma International Airport operating revenues from 2019 actuals through the 2025 budget, broken down into Aero and Non-Aero components. The 2025 budget projects total revenues of $934 million, described as 9.4% above the 2024 budget and 36% above 2019 actuals.
    TagsBudget, Port Of Seattle, Presentation, Sea-Tac AirportFolderBudget 2025 Presentation
  • Delta Air Lines Boeing 757 (N559NW) on Runway

    An aerial view of a Delta Air Lines Boeing 757, bearing tail number N559NW and a U.S. flag decal, taxiing or beginning its takeoff roll on a runway. The aircraft displays Delta's current livery with white fuselage, blue engines and winglets, and the red-and-blue widget logo on the tail; smoke is visible from the engines.
    Tagsaircraft, Delta, Sea-Tac AirportFolderAviation
  • 2024-10-03

    Commercial Jet Aircraft Viewed from Below Against Blue Sky

    A white twin-engine narrow-body commercial jet aircraft, viewed from below against a clear blue sky, with landing gear retracted and what appears to be a purple or magenta tail livery partially visible. The aircraft type appears consistent with an Airbus A320-family or Boeing 737-family; no tail number or airline logo is legibly readable from this angle.
    Tagsaircraft, Aviation Emissions, Noise, Sea-Tac AirportFolderAirlines
  • Rsc2024nov21 pres port seattle pdf
    2024-10-01

    Sustainable Airport Master Plan: Near-Term Projects Environmental Review — Release of the FAA NEPA Draft Environmental Assessment and Public Comment Period

    Port of Seattle presentation covering the Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTPs) Environmental Review, released October–November 2024. Covers the FAA NEPA Draft Environmental Assessment (Draft EA) and public comment period for Sea-Tac Airport (SEA). Includes historical passenger growth data from 1949 (130,600 passengers) through 2023 (50.8 million passengers), and regional growth projections showing
    TagsNEPA, Port Of Seattle, PSRC, SAMP, Sea-Tac AirportFolderPuget Sound Regional Council
  • 2024-10-01

    Seattle-Tacoma International Airport Environmental Assessment for the SAMP Near-Term Projects: Chapter 4 — Environmental Consequences

    This October 2024 draft Environmental Assessment evaluates the potential environmental impacts of near-term construction and operational projects at Seattle-Tacoma International Airport under three alternatives: No Action, a Proposed Action, and a Hybrid Terminal Option. The analysis covers impacts through 2032 and an out-year of 2037, finding that increases in air quality emissions and effects on biological resources are not considered significant, with mitigation measures proposed for stormwater management and migratory bird nesting. Farmlands and Wild and Scenic Rivers were determined to have no presence in the study area and required no further analysis.
    Tagsenvironmental assessment, Landrum & Brown, NEPA, SAMP, SAMP Draft EA, Sea-Tac Airport, Sustainable Airport Master PlanFolder2024 Draft EA
  • 2024-10-01

    Chapter 3: Affected Environment — Seattle-Tacoma International Airport Environmental Assessment for the Sustainable Airport Master Plan Near-Term Projects

    This draft Environmental Assessment from October 2024 examines the existing conditions around Seattle-Tacoma International Airport (SEA) as part of the Sustainable Airport Master Plan Near-Term Projects. Using 2022 as the baseline year, it describes SEA's location on approximately 2,800 acres in the City of SeaTac, situated 12 miles south of downtown Seattle and surrounded primarily by residential neighborhoods. The study covers a General Study Area of 3,692 acres to identify where proposed airport development actions could have direct or indirect environmental impacts on nearby communities.
    Tagsenvironmental assessment, Landrum & Brown, NEPA, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolder2024 Draft EA
  • 2024-10-01

    Airport Improvement Magazine, October 2024: Runway & Ramp Special Edition

    The October 2024 special edition of Airport Improvement magazine covers runway and ramp safety projects at airports across the United States, including Seattle-Tacoma International Airport's transition to PFAS-free firefighting foam. The Seattle-Tacoma article focuses on cleaning PFAS contamination from firefighting vehicles, reflecting broader efforts to eliminate hazardous fluorine-based chemicals from airport operations. Additional stories cover FAA technology deployments, taxiway reconstruction, and airfield safety improvements at airports nationwide.
    TagsAirport Improvement Magazine, FAA, PFAS, Sea-Tac AirportFolderAirport Improvement

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Upcoming Events

  • Stay Grounded Event: Night trains, not night planes!
    Add to CalendarMSunday Sep 13: 12:00am
    Ntnnp social media3

    For the past two years, more than 220 initiatives from 15 countries have declared September 13th as the International day for the ban of night flights at airports. In parallel, activists across Europe have been gathering for pyjama parties for night trains – coordinated in 2024 and 2025 by Back on Track and Stay Grounded.

    [...]
  • Burien Airport Committee Meeting September 15, 2026
    Add to CalendarMTuesday Sep 15: 6:00pm
    400 SW 152nd St, Burien, WA 98166
    Burien airport committee 15 sep 2026 agenda pdf pdf

    a) Part 150 Noise Study (Emily Inlow-Hood) — 15 minutes
    b) SAMP Update and Next Steps (Brian Davis and Sarah Moore) — 15 minutes
    c) Legislative Updates — 10 minutes
       • SCA (Sarah Moore)
       • Work with Sen. Orwall (Brian Davis)
    d) StART Reorganization (Jeff Harbaugh and Karen Veloria) — 10 minutes

    [...]

[See all...]


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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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