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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.

TagSustainable Airport Master Plan(237)

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  • 2024-06-01

    Appendix B: SAMP – Near-Term Projects: Purpose and Need Technical Report

    This technical report, prepared by Landrum & Brown for the Port of Seattle in June 2024, outlines the purpose and need for near-term construction and improvement projects identified in the Sustainable Airport Master Plan for Seattle-Tacoma International Airport. It is part of a broader set of supporting documents that also covers alternatives analysis, terminal needs, and air cargo facility requirements. The report provides the foundational justification for planned airport development decisions.
    TagsEnvironmental Impact Statement, Landrum & Brown, Port Of Seattle, SAMP, Sea-Tac Airport, SEPA, Sustainable Airport Master PlanFolderAppendices
  • 2024-06-01

    Purpose and Need Technical Report: Sustainable Airport Master Plan – Near-Term Projects

    This technical report, prepared by Landrum & Brown for the Port of Seattle in June 2024, outlines the purpose and need for near-term capital projects identified in Sea-Tac Airport's Sustainable Airport Master Plan. It is part of a broader set of supporting documents that also covers alternatives analysis, terminal needs assessment, and air cargo facility requirements. The report provides the foundational justification for proposed airport improvements and infrastructure expansions at Seattle-Tacoma International Airport.
    TagsEnvironmental Impact Statement, Landrum & Brown, NEPA, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderAppendices
  • SAMP Near-Term Projects NTP Screenshot_29-5-2024_050_www.sampntpenvironmentalreview.org

    Header image for the Seattle-Tacoma International Airport Sustainable Airport Master Plan (SAMP) Near-Term Projects Environmental Review document. The photo shows the airport tarmac with multiple airlines including Delta, Alaska Airlines, and Frontier visible, with Mount Rainier in the background.
    TagsSAMP, Sustainable Airport Master PlanFolderSAMP
  • 2024-05-22

    SAMP Near-Term Projects Environmental Review Overview — Highline Forum, May 22, 2024 (Page 1)

    Title slide for a Port of Seattle presentation on the Sustainable Airport Master Plan Near-Term Projects Environmental Review, delivered by Steve Rybolt, Senior Environmental Program Manager, at the Highline Forum on May 22, 2024.
    TagsEnvironmental Review, Highline Forum, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderHighline Forum 2024
  • 2024-05-22

    SAMP Environmental Review — Near-Term Capital Projects Aerial Map (Page 3)

    This aerial map, from the Seattle-Tacoma International Airport Sustainable Airport Master Plan (SAMP) Environmental Review prepared by the Port of Seattle and LPA Group, depicts near-term capital projects across the airport campus. Projects are color-coded by category including Second Terminal Projects (blue), Cargo Expansion Projects (tan/gold), Airfield Operational Projects (yellow), Airfield Safety/Standards Projects (red), and Sustainable Aviation Fuel Projects (green), with individual project codes labeled (e.g., A01–A09, S01–S10, C01–C03, L01–L07, T01–T02).
    TagsEnvironmental Review, Highline Forum, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderHighline Forum 2024
  • 2024-05-22

    Highline Forum SAMP NTP EnvrReview Overview – 22may2024 Page 3

    Slide 3 from a Port of Seattle presentation on the Seattle-Tacoma International Airport (Sea-Tac) Sustainable Airport Master Plan (SAMP) Environmental Review, showing an aerial map of near-term projects categorized by type: Second Terminal Projects (blue), Cargo Expansion Projects (orange/brown), Airfield Operational Projects (yellow), Airfield Safety/Standards Projects (red), and Sustainable Aviation Fuel Projects (green). The map is branded with the Port of Seattle and ZLB logos.
    TagsEnvironmental Review, Highline Forum, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderHighline Forum 2024
  • 2024-05-22

    Highline Forum SAMP NTP Environmental Review Overview — Page 2 (May 22, 2024)

    This presentation slide outlines near-term projects under the Sustainable Airport Master Plan, including expanded passenger processing facilities to accommodate a projected 56 Million Annual Passengers (MAP), additional cargo and fuel storage facilities, airfield infrastructure modifications to meet FAA design standards, and taxiway efficiency improvements. The mention of the Port's Sustainable Aviation Fuel initiative identifies this as a Port of Seattle document related to Seattle-Tacoma International Airport planning.
    TagsHighline Forum, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderHighline Forum 2024
  • 2024-03-01

    Sustainable Airport Master Plan – Near-Term Projects: Noise Technical Report

    This Noise Technical Report, prepared by Landrum & Brown for the Port of Seattle in March 2024, analyzes noise impacts associated with near-term projects outlined in the Sustainable Airport Master Plan for Seattle-Tacoma International Airport. It is part of a broader Appendix J covering noise and noise-compatible land use, which also includes a Noise Modeling Protocol and a Construction Noise Technical Report. The report provides technical assessments to support planning decisions related to aircraft and construction noise in communities surrounding Sea-Tac Airport.
    TagsLandrum & Brown, NEPA, Noise, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderAppendices
  • 2024-03-01

    Sustainable Airport Master Plan – Near-Term Projects: Noise Technical Report

    This Noise Technical Report, prepared by Landrum & Brown for the Port of Seattle in March 2024, analyzes noise impacts associated with near-term construction and development projects outlined in the Sustainable Airport Master Plan for Seattle-Tacoma International Airport. The report is part of a broader Appendix J covering noise and noise-compatible land use, which also includes a Noise Modeling Protocol and a Construction Noise Technical Report. Together, these documents provide technical assessments to guide planning decisions that balance airport operations with the noise concerns of surrounding communities.
    TagsEnvironmental Impact Statement, Landrum & Brown, NEPA, Noise, Port Of Seattle, SAMP, Sustainable Airport Master PlanFolderAppendices
  • 2024-03-01

    Air Quality and Greenhouse Gas Technical Report: Sustainable Airport Master Plan Near-Term Projects

    This technical report, prepared by Landrum & Brown for the Port of Seattle in March 2024, analyzes air quality and greenhouse gas emissions associated with near-term projects in the Sustainable Airport Master Plan for Sea-Tac Airport. It covers emission sources including aircraft, ground support equipment, stationary and mobile sources, and construction activities. Note that following changes to federal executive orders and a 2025 Supreme Court ruling, references to climate change preparedness and cumulative impact analysis were removed from the final version, leaving only the quantified GHG emissions disclosures.
    TagsGreenhouse gases, Landrum & Brown, NEPA, Port Of Seattle, SAMP, Sustainable Airport Master PlanFolderAppendices

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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

    [...]

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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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