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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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  • SAMP-2015-0519-BP12-PortofSeattle Page 08

    A draft slide from Seattle-Tacoma International Airport's Sustainable Airport Master Plan (November 2014) showing development constraints and future airport land uses, including proposed areas for terminal, cargo, and displaced facilities south of the existing airfield. The slide notes the need for an aircraft bridge over a creek and a potential South Access roadway corridor to connect additional airfield-adjacent land to meet future demand.
    TagsAirport Expansion, Master Plan, Port Of Seattle, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • SAMP-2015-0519-BP12-PortofSeattle Page 07

    Slide 7 from the Seattle-Tacoma International Airport Sustainable Airport Master Plan (draft, November 2014) showing an aerial map of Sea-Tac Airport annotated with development constraints including Critical Areas, SR 509, SR 518, International Boulevard, and a Cemetery, along with color-coded future land use designations for Terminal, Cargo, Displaced Facilities, Off-airport Development Areas, and Areas to Accommodate Displaced Facilities. The subtitle states that environmental, airspace, and land use constraints severely limit expansion options.
    TagsAirport Expansion, Master Plan, Port Of Seattle, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • SAMP-2015-0519-BP12-PortofSeattle Page 06

    A presentation slide from the Seattle-Tacoma International Airport Sustainable Airport Master Plan, outlining capacity and phased expansion needs across three areas: Airfield (33% more peak hour operations without runway expansion), Terminal (35 additional gates, possible second terminal), and Landside (Upper/Lower Drives expansion challenges, North Airport Expressway bottleneck).
    TagsAirport Expansion, Capacity, Port Of Seattle, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • SAMP-2015-0519-BP12-PortofSeattle Page 11

    Slide 11 from Seattle-Tacoma International Airport's Sustainable Airport Master Plan presentation, showing an aerial photograph annotated with landside vehicle traffic chokepoints including the Ground Transportation Lot (GT lot), Ramp Apron, Parking Garage, service tunnel, upper and lower drives, and a potential APM (Automated People Mover) corridor.
    TagsAirport Expansion, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • SAMP-2015-0519-BP12-PortofSeattle Page 09

    Slide 9 from the Seattle-Tacoma International Airport Sustainable Airport Master Plan presentation, titled 'Development Constraints – Airfield: Modeling a Preliminary Concept for Gate Expansion.' The slide shows an aerial diagram comparing two proposed expansion areas: Concourse A Expansion (left, with red conflict markers indicating airfield constraints) and a North Concourse concept (right, shown in blue dashed outline).
    TagsAirport Expansion, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • SAMP-2015-0519-BP12-PortofSeattle Page 14

    Final slide (page 14) of a Port of Seattle Sea-Tac Airport SAMP (Sustainable Airport Master Plan) presentation, directing viewers to www.portseattle.org or http://bit.ly/airport-master-plan for more information and updates. The slide includes a nighttime exterior photograph of Seattle-Tacoma International Airport terminal with aircraft at gates and the air traffic control tower visible.
    TagsMaster Plan, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • SAMP-2015-0519-BP12-PortofSeattle Page 13

    Slide 13 from the Seattle-Tacoma International Airport Sustainable Airport Master Plan (SAMP) presentation detailing public outreach activities, including three series of Community Open Houses (1st series dates: March 4 at Mount Rainier High School, March 19 at Seattle Central Library, and April 2 at Bellevue Public Library, all 5–7 p.m.), a Transportation Review Committee, and Regional and Local Government Briefings. The 2nd and 3rd open house series were planned for Summer and Fall 2015 respectively.
    TagsOpen House, Outreach, Port Of Seattle, SAMP, Sea-Tac AirportFolderSAMP
  • SAMP-2015-0519-BP12-PortofSeattle Page 12

    This slide from the Seattle-Tacoma International Airport Sustainable Airport Master Plan presents the planning schedule, including Activity Forecast (completed Q3 2014), Alternatives Analysis & Plan Development (Q4 2014–Q3 2015), Program Plan of Finance (Q1 2016), and Environmental Review (Q3 2015–Q4 2016). A Gantt chart at the bottom shows task timelines across 2014–2016, with Commission Briefing milestones marked.
    TagsMaster Plan, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • STCP-6.6.5-27-south

    A planning map from the Sea-Tac Communities Plan, sponsored by the Port of Seattle and King County, showing the South Reinforcement Area program application with color-coded zones indicating acquisition, purchase guarantee, cost-sharing insulation, and limited cost-sharing insulation relative to airport noise contours. The map covers the area around S. 223rd Street south to Kent city limits, bounded by Puget Sound to the west and Pacific Highway South (SR-99) to the east, with landmarks including Mt. Rainier High School, Highline Community College, and Parkside Elementary labeled.
    TagsMap, Noise Mitigation, Port Of Seattle, Sea-Tac Communities Plan, Sound InsulationFolderChapter 6.6.5
  • STCP-6.6.5-26-south

    A planning map from the Sea-Tac Communities Plan, sponsored by the Port of Seattle and King County, showing the South Reinforcement Area program application. The map uses color coding to designate zones for acquisition, purchase guarantee, cost-sharing insulation, and limited cost-sharing insulation in the area bounded roughly by S. 200th St. to the north and S. 223rd St. to the south, including grid cells along 16th Ave. S., 24th Ave. S., and Pacific Highway South (SR-99), with a Southeast Conversion Area noted in the upper right.
    TagsKing County, Map, Noise Mitigation, Port Of Seattle, Sea-Tac Communities PlanFolderChapter 6.6.5

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Upcoming Events

  • Port of Seattle Regular Commission Meeting September 22, 2026
    Add to CalendarMTuesday Sep 22: 12:00pm
    17801 International Blvd, Seattle, WA 98158
    2026 09 22 rm packet pdf

    Order of Business 10:30 a.m. 1. Call to Order 2. Executive Session – if necessary, pursuant to RCW 42.30.110 (executive sessions are not open to the public) 12:00 p.m. – Public Session Reconvene or Call to Order and Pledge of Allegiance 3. Approval of the Agenda 4. Special Orders of the Day 4a. Presentation of

    [...]
  • Highline Forum Agenda – September 23, 2026
    Add to CalendarMWednesday Sep 23, 2:30pm - 4:30pm
    City of Des Moines, Police Services Building,
    Highline forum agenda final 23sept2026 pdf

    Highline Forum Agenda Theme: Part 150 Update and PortJobs Overview 2:30pm – Convene Meeting/Introductions Port Co-Chair, Commissioner Mohamed 2:35pm – Public Comments Audience The meeting will be held in person and virtually. Those wishing to provide public comment may: 1) Deliver public comment via email; 2) Deliver public comment via Microsoft Teams; or 3) Deliver

    [...]

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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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