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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.

TagNoise Monitors(22)

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  • Sea kcia part 150 dnl contours POS noise monitors

    Map of Sea-Tac and KCIA DNL contours with Port of Seattle Noise Monitors

    This map displays noise exposure contours for Seattle-Tacoma International Airport (SEA) comparing the 1991 and 2032 DNL65 projections, alongside KCIA DNL65 and DNL70 contours near Georgetown/South Seattle. It also shows POS (Port of Seattle) permanent and portable noise monitor locations (2020–2022) across the South Seattle, Burien, SeaTac, Tukwila, and Renton areas, with runway geometry markers for KCIA and COTKU [1].
    TagsDNL65, KCIA, Map, Noise Monitors, Part 150, Sea-Tac Airport
  • 2026-04-21

    DCA Fly Quiet Program: Ronald Reagan Washington National Airport

    This document outlines the Fly Quiet Program at Ronald Reagan Washington National Airport (DCA) in Washington, D.C., describing the airport's efforts to reduce aircraft noise impacts on surrounding communities. Key measures include FAA-approved flight procedures, a nighttime noise rule with financial penalties for violations between 10 p.m. and 7 a.m., limits on engine run-ups, and requests to airlines to use quieter aircraft. The program also operates a public noise complaint system, flight-tracking tools, and a noise monitoring network to keep residents informed and engaged.
    TagsFly Quiet, Noise Abatement Procedures, Noise Complaints, Noise Monitors, Reagan National Airport
  • 2025-05-13

    Port Of Seattle Commission regular meeting agenda, May 13, 2025

    The Port of Seattle Commission held a regular meeting on May 13, 2025, covering a range of operational and administrative items, including a consent agenda item (8h) authorizing a contract extension with Passur for its Noise Monitoring and Flight Tracking System for up to ten years at a cost not to exceed $4,000,000. The meeting was held both in person at Port of Seattle Headquarters and virtually via Microsoft Teams, with public comment accepted by email, phone, or in person. Additional agenda items addressed airport infrastructure, ADA compliance, airfield equipment, and labor agreements.
    TagsNoise Monitors, Port Of Seattle, Port Of Seattle Commission, pos_rm_2025_03_11, Sea-Tac Airport
  • 2025-05-13

    Port Of Seattle Commission regular meeting agenda, May 13, 2025

    Official agenda for the Port of Seattle Commission Regular Meeting held on May 13, 2025, at Port of Seattle Headquarters and virtually via MS Teams. The agenda includes a proclamation recognizing Asian American and Native Hawaiian/Pacific Islander Heritage Month, an executive director’s report, committee reports, public comment procedures, and a consent agenda covering items such
    TagsNoise Monitors, Port Of Seattle, Port Of Seattle Commission, pos_rm_2025_03_11, Sea-Tac Airport
  • Project Manuel 4A Noise Monitoring Systems 1978

    TagsNoise Monitors, Third Runway
  • 2022-09-15

    Compliance Guidance Letter 2022-03, FAA guidance regarding the use of airport revenue for noise insulation projects within the DNL 65 dBA and noise monitoring equipment purchases

    This 2022 FAA guidance letter explains how airports can legally spend airport revenue on noise insulation projects, such as new windows, doors, and air conditioning, for homes and schools located within the DNL 65 dBA noise contour — the federal threshold for significant aircraft noise impact. Spending airport revenue on noise insulation for properties outside that noise boundary is generally prohibited as revenue diversion, unless a lower local noise standard has been officially adopted or 'block rounding' has been approved. The letter also clarifies that airports may purchase mobile or permanent noise monitoring equipment using airport revenue, provided certain conditions are met, but monitors cannot be used to enforce noise abatement flight procedures.
    TagsAIP, DNL65, FAA, Noise Mitigation, Noise Monitors
  • 2022-09-15

    Compliance Guidance Letter 2022-03, FAA guidance regarding the use of airport revenue for noise insulation projects within the DNL 65 dBA and noise monitoring equipment purchases

    This 2022 FAA guidance letter explains how airports can legally spend airport revenue on noise insulation projects, such as new windows, doors, and air conditioning, for homes and schools located within the DNL 65 dBA noise contour — the federal threshold for significant aircraft noise impact. Spending airport revenue on noise insulation for properties outside that noise boundary is generally prohibited as revenue diversion, unless a lower local noise standard has been officially adopted or 'block rounding' has been approved. The letter also clarifies that airports may purchase mobile or permanent noise monitoring equipment using airport revenue, provided certain conditions are met, but monitors cannot be used to enforce noise abatement flight procedures.
    TagsAIP, DNL65, FAA, Noise Mitigation, Noise Monitors
  • Permanent Noise Monitor Locations as of 2020

    A map published by the Port of Seattle showing the locations of 25 noise monitoring stations surrounding Seattle-Tacoma International Airport (Sea-Tac). Monitoring sites span multiple communities including Seattle, Burien, SeaTac, Des Moines, Federal Way, Medina, Mercer Island, and Auburn, with each location identified by a number and street address.
    TagsNoise Monitors
  • 2021-07-21

    Highline Forum agenda, July 21, 2021

    The Highline Forum held a virtual meeting on July 21, 2021, hosted by Highline College, covering updates on 2021 Seattle-Tacoma International Airport (SEA) flight activity, temporary noise monitor installations, and federal aviation policy. The meeting, conducted via Microsoft Teams, featured presentations by Port of Seattle staff and Aviation Director Lance Lyttle, with public comments accepted by email or live video link. The document also lists all six Highline Forum meeting dates for 2021, with hosts rotating among local entities including the cities of Burien, Federal Way, Tukwila, and SeaTac.
    TagsHighline Forum, Noise Monitors, Port Of Seattle, Sea-Tac Airport, StART
  • Port Of Seattle Commission Meeting

    Item 8b: renewal of noise monitoring system: https://meetings.portseattle.org/portmeetings/attachments/2020/2020_09_08_RM_8b.pdf To be held in virtually via Skype in accordance with the Governor’s ‘Stay at Home’ order and Proclamation 20-28. You may view the full meeting live at meetings.portseattle.org. To listen live, call in at +1 (425) 660-9954 and code796815952# Item No.8bACTION ITEMDate of MeetingSeptember 8, 2020DATE:September 1,
    CategoriesEvents TagsL3 Harris, Noise Monitors

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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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