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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.

TagInterlocal Agreement(170)

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  • 2006-02-16

    SeaTac 2005 Interlocal Agreement (ILA-2)

    The 2005 Interlocal Agreement (ILA-2), signed February 16, 2006, is a formal cooperative agreement between the City of SeaTac and the Port of Seattle governing a range of shared responsibilities related to Seattle-Tacoma International Airport. It covers topics including land use and zoning, surface water management, transportation, public safety, and noise policy, while also establishing financial commitments and dispute resolution procedures. The agreement builds on prior 2001 and 2004 interlocal agreements and sets out a framework for ongoing interagency cooperation on airport development and its impacts on the surrounding community.
    TagsCity Of SeaTac, ILA, Interlocal Agreement, Land Use, Port Of SeattleFolderSeaTac
  • 2006-02-16

    Amendment No. 3 to Port Of Seattle and City of SeaTac 2005 Interlocal Agreement (ILA-2)

    This is Amendment No. 3 to a 2005 Interlocal Agreement between the Port of Seattle and the City of SeaTac, entered into on February 16, 2006, governing transportation planning and funding around Seattle-Tacoma International Airport. The amendment updates project management responsibilities and budget allocations for capital improvement projects, including the South Access roadway, SR 518 improvements, and the South Link Project on 28th Ave. S., funded through a local parking tax. It establishes rules for how parking tax revenues are divided among projects and outlines corrective actions if actual revenues fall short of forecasts.
    TagsCity Of SeaTac, Interlocal Agreement, parking tax, Port Of Seattle, transportationFolderSeaTac
  • 2004-04-19

    Resolution No. 3523 – Des Moines Creek Basin Plan Interlocal Agreement V2

    A Port of Seattle resolution authorizing the Chief Executive Officer to execute version two of an Interlocal Agreement with the Cities of Des Moines and SeaTac, Washington State Department of Transportation and King County to fund, construct, operate and maintain capital projects necessary to implement the Des Moines Creek Basin Plan. The projects include construction
    TagsCity Of Des Moines, City Of SeaTac, Des Moines Creek Basin Plan, Interlocal Agreement, King County, Port Of Seattle, WSDOTFolderDes Moines Creek
  • 2002-10-23

    EXH AR038735: Interlocal Agreement, Airport Communities Coalition

    Interlocal Agreement establishing the Airport Communities Coalition (ACC) under the Interlocal Cooperation Act (RCW Chapter 39.34), signed by the cities of Normandy Park, Des Moines, Burien, Federal Way, and Tukwila, each a Washington Municipal Corporation. The agreement opposes construction of a third runway at Seattle-Tacoma International Airport, opposes increased air traffic at Boeing Field, seeks
    TagsACC, Airport Communities Coalition, Boeing Field, Four Post Plan, Interlocal Agreement, Pollution Control Hearings Board, Third RunwayFolderBox 16
  • 2002-02-19

    Exhibit 2128: Inter-Local Agreement Between Ecology and Port Of Seattle for STIA Master Plan Update Oversight

    Facsimile cover sheet dated 2-19-02 from Ray Hellwig, Washington State Department of Ecology Northwest Regional Office (Bellevue, WA), to Tom Young (AAG), transmitting 11 pages including a Port of Seattle memorandum dated February 7, 2002 and an Inter-local Agreement between State of Washington Department of Ecology and Port of Seattle for oversight of construction projects
    TagsACC, Clean Water Act, Ecology, Interlocal Agreement, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport Master PlanFolderBox 14
  • 2001-12-14

    EXH AR028396: Agreement Between Port Of Seattle and City Of Sea-Tac for Development of Certain Port-Owned Properties

    Agreement effective December 14, 2001 between Port Of Seattle and City of SeaTac for development of Port-owned properties known as Borrow Area #3 (south of South 200th Street, west of 18th Avenue South) and Borrow Area #4 (north of South 200th Street, west and south of 18th Avenue South and South 196th Street). Resolves outstanding
    TagsACC, City Of SeaTac, Interlocal Agreement, Land Use, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 10
  • 1999-11-30

    EXH AR026502: Letter to Seattle Public Utilities — 4th Quarterly Stormwater Monitoring Results, NEPL, STIA

    A November 30, 1999 letter from Port of Seattle's Aviation Project Management Group to Seattle Public Utilities reports the fourth and final quarterly stormwater monitoring results for the Sea-Tac Airport North Employees' Parking Lot (NEPL). Testing of water samples collected throughout 1999 found pollutant levels—including metals, hydrocarbons, and suspended solids—well below Washington State residential water supply standards. Based on these results, the Port proposed ending the monitoring program and invited the City of Seattle to confer on whether further monitoring was warranted under their Interlocal Agreement.
    TagsACC, Interlocal Agreement, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Stormwater, Third Runway, Water QualityFolderBox 10
  • 1997-02-25

    Highline School District Agreement to Join Airport Communities Coalition (ACC)

    This 1997 intergovernmental agreement, signed by the Highline School District and several cities in the Sea-Tac Airport vicinity — including Des Moines, Normandy Park, Burien, Federal Way, and Tukwila — establishes a coordinated framework for addressing airport noise impacts and related funding for schools. The agreement supersedes earlier agreements from February 1992 and June 1996 between the same parties. It outlines provisions for settlement authority, dispute resolution, and the role of the Airport Communities Coalition (ACC) Executive Committee in approving any claims or compromises.
    TagsACC, Airport Communities Coalition, Highline Schools, Interlocal Agreement, Third RunwayFolderACC
  • 1992-09-08

    Resolution 3119: Port Of Seattle Commission Authorization for ILA with City of SeaTac for State Building Code Enforcement at Sea-Tac

    Port Of Seattle Commission Resolution No. 3119, adopted September 8, 1992, authorizing the Executive Director to execute an Interlocal Agreement between the City of SeaTac and the Port of Seattle for enforcement of the State Building Code at Seattle-Tacoma International Airport. The resolution references RCW Title 19 (1976), the Airport Building Department established in 1976
    TagsCity Of SeaTac, ILA, Interlocal Agreement, Port Of Seattle, Port Of Seattle Commission, Sea-Tac AirportFolderSeaTac
  • 1990-05-15

    Phase I agreement relating to the development of North SeaTac Park

    This 1990 agreement between the Port of Seattle, the City of SeaTac, and King County outlines plans to develop North SeaTac Park, including the construction of a new public Activity Center to replace the aging Sunset Activity Center. The Port agreed to contribute up to $2,953,600 toward development costs, while the County took responsibility for design, construction, and eventual demolition of the old facility. The agreement also includes provisions ensuring park uses remain compatible with Sea-Tac Airport operations, prohibiting any structures or activities that would interfere with air navigation or violate FAA regulations.
    TagsCity Of SeaTac, Interlocal Agreement, King County, North Sea-Tac Park, NSTP, Port Of SeattleFolderNSTP

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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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