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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.

Category : Key Documents(133)

The (133) files, images and basic information we refer to constantly from the Document Library and Resources pages.

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  • Port Of Seattle – Resolution No 3212

    ★ 32
    Update to Master Plan passed to enable the Third Runway construction to commence. The Commission finds that the EIS for Proposed Master Plan Update Development Actions (including the PSRC-issued EIS Addendum) is adequate and meets the requirements of the State Environmental Policy Act, Ch. 43.21C RCW. Section 2. The Comnission hereby adopts the Airport Master
    CategoriesKey Documents TagsPort Of Seattle, Puget Sound Regional Council, SEPA, Third Runway
  • Aircraft Noise 101 – Steve Alverson – Highline Forum

    ★ 32
    An introduction to airport noise, DNL65 and Part 150 by Mr. Steve Alverson of ESA – the firm used by the Port of Seattle for the current Part 150 Study and SAMP
    CategoriesKey Documents TagsESA, Steve Alverson
  • Sea-Tac Airport Economic Impacts 2018

    ★ 32
    Sea-Tac Airport Economic Impacts 2018
    CategoriesKey Documents
  • King County Greenhouse Gas Emissions Inventory 2015

    ★ 32
    CategoriesKey Documents
  • NextGen Implementation Plan 2016

    ★ 32
    We are pleased to provide you with the latest information on six of the programs that are reshaping operations in the National Airspace System (NAS): •Automatic Dependent Surveillance–Broadcast (ADS-B) •Data Communications (Data Comm) •En Route Automation Modernization (ERAM) •Terminal Automation Modernization and Replacement (TAMR) •NAS Voice System (NVS) •System Wide Information Management (SWIM)
    CategoriesKey Documents TagsFAA, Michael Huerta, NextGen
  • 2013-10-15

    Informal Runway Use Agreement (Appendix I 2013 Part 150 Study)

    ★ 32
    Appendix I from the 2013 Part 150 Study by Landrum & Brown. A Letter Of Agreement (LOA) where the Port Of Seattle agrees to using the Third Runway primarily for overflows and bad weather. Note the very official looking signature of the Port CEO, Tay Yoshitani. Also note that it is described as an ‘informal
    CategoriesKey Documents TagsLandrum & Brown, Part 150, Runway Use Agreement, Tay Yoshitani, Third Runway
  • 2005-06-24

    Council On Environmental Quality: Consideration of Past Actions In Cumulative Effects Analysis

    ★ 32
    CategoriesKey Documents TagsCEQ, Council on Environmental Quality, Environmental Review, NEPA
  • 2003-05-20

    Aviation Mitigation Zones – HB 2276 Striking Amendment (H-3175.2/03)

    ★ 32
    Legislative memorandum analyzing a striking amendment to HB 2276 that establishes aviation mitigation zones for large regional airports. The amendment requires qualifying port districts to levy $10 million annually for four years (2004-2007) for mitigation purposes and creates an advisory board to assist with grant distribution.
    CategoriesKey Documents, Legislation TagsAirport, Airport Communities Coalition, Airport Noise Law, Aviation Impacted Communities Alliance, Port Of Seattle
  • 2002-10-15

    King County Motion 11600 – FAA Part 150 Noise and Land Use Compatibility Study

    ★ 32
    A King County motion to adopt the King County International Airport’s Federal Aviation Regulation Part 150 Noise and Land Use Compatibility Study and to accept federal grants for implementing recommended programs. The motion outlines the airport’s economic importance and various noise mitigation strategies including sound insulation programs, flight restrictions, and a Ground Run-up enclosure.
    CategoriesKey Documents TagsKCIA, King County Council, Part 150
  • SR 509 Corridor Completion/I-5/South Access Road Revised Draft EIS Section 4(f) Evaluation

    ★ 32
    CategoriesHistory, Key Documents TagsPort Of Seattle, SR509, WSDOT

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Upcoming Events

  • PSCAA Advisory Council Meeting
    Add to CalendarMThursday May 14, 9:00am - 12:00pm
    1904 3rd Avenue, Suite 105, Seattle, WA 98101
    May 14 2026 advisory council meeting agenda and materials pdf

    Call to Order – Land Acknowledgement 9:00 – 9:05 Land acknowledgement recognizing Coast Salish people and traditional lands I. Early Morning: Alignment & Assessment A. Approval of March 11, 2026 Minutes 9:05 – 9:30 B. Introductions and Setting Goals and Norms for Retreat 9:05 – 9:30 II. New Business A. Strategic Plan Third Annual Report

    [...]
  • KCIA Vision 2045 Open House
    Add to CalendarMThursday May 14, 5:30pm - 7:30pm
    KCIA Flight Service Station, 6526 Ellis Ave. S. Seattle, WA 98108
    Kcia Boeing Field Beautyshotkcia

    King County International Airport-Boeing Field is at a pivotal moment, developing comprehensive plans that will determine its operations through 2045. The airport's Vision 2045 Airport Plan and Part 150 Study represent crucial strategic initiatives to balance safe, efficient operations with evolving aviation demands and community needs.

    Join airport officials on Thursday, May 14 (5:30-7:30 p.m.) at the KCIA Flight Service Station to discover the preferred alternative for the airport's future development. This isn't just another planning meeting—it's your opportunity to understand how proposed projects and improvements will directly impact aviation services, local operations, and surrounding communities.

    The Vision 2045 plan incorporates extensive stakeholder feedback and addresses critical infrastructure needs for future demand. Meanwhile, the Part 150 Study focuses on noise compatibility programs, ensuring community concerns remain central to planning decisions.

    With environmental analysis nearing completion and submissions to King County Council and the FAA approaching, this open house offers essential insights into decisions that will shape regional aviation for decades.

    Visit KCIAplanning.com for updates.

    [...]

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Help study childhood asthma. Get free HEPA filter!

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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!

A report examining the barriers to implementing sustainable aviation fuel (SAF) in Massachusetts, authored by Neil Rasmussen and Chuck Collins from the Institute for Policy Studies. The report analyzes challenges and obstacles facing SAF adoption in the state.
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