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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.

TagMaster Plan(51)

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  • 2015-12-15

    Sea-Tac Airport Sustainability Goals and Objectives

    A December 2015 presentation by Sea-Tac Airport's Director of Environmental & Planning outlines how the airport is weaving sustainability into its Master Plan across three phases: what and where it builds, how it builds, and how it operates. The plan is guided by the Port of Seattle's Century Agenda and the airport's own Strategy for a Sustainable Sea-Tac (S3), with development concepts for airfield, terminal, and landside areas being screened against sustainability-based evaluation criteria. Key planning constraints include meeting passenger demand growth without adding new runways, improving airfield efficiency through NextGen technology, and converting sustainability goals into measurable decision-making criteria.
    TagsCentury Agenda, Elizabeth Leavitt, Environment, Master Plan, SAMP, Sea-Tac AirportFolderUpdates
  • 2015-12-10

    City of Des Moines 2016 Parks, Recreation & Senior Services Master Plan

    This is the City of Des Moines, Washington 2016 Parks, Recreation & Senior Services Master Plan, adopted by the Des Moines City Council on December 10, 2015. The plan covers existing park resources, programs, and demographics, along with a needs assessment, facility development priorities, cost estimates, and funding strategies for the city's parks and recreation system. It also includes goals, policies, and implementation strategies for parks, recreation, and open space.
    TagsCity Of Des Moines, community development, Master Plan, ParksFolderDes Moines Creek Business Park
  • 2015-12-10

    Resolution No. 1317: Approving the Parks, Recreation and Senior Services Master Plan for the City of Des Moines, 2016–2021

    The City Council of Des Moines, Washington adopted Resolution No. 1317 on December 10, 2015, officially approving the 2016–2021 Parks, Recreation and Senior Services Master Plan. The plan, developed with input from a citizen advisory committee and a professional architectural consultant, guides future park acquisitions, renovations, and capital improvements, and must be filed with the state Recreation and Conservation Office within 30 days. It also serves as the basis for updating the city's Comprehensive Plan and calculating Park Impact Fee rates.
    Tagscity council, City Of Des Moines, Master Plan, Parks, RCWFolderDes Moines Creek Business Park
  • 2015-07-01

    Technical Memorandum No. 1: Background, Process, Goals, and Objectives — Seattle-Tacoma International Airport Sustainable Airport Master Plan

    This July 2015 technical memorandum outlines the background, goals, and objectives for Seattle-Tacoma International Airport's Sustainable Airport Master Plan (SAMP), prepared by Leigh Fisher for the Port of Seattle. It describes how the SAMP differs from a traditional airport master plan by integrating financial, environmental, and community sustainability considerations into long-term airport development planning. The document also explains how sustainability goals—drawn from national, regional, and Port of Seattle policies—will be used to evaluate and screen future development alternatives for Sea-Tac Airport.
    TagsMaster Plan, Port Of Seattle, SAMP, Sea-Tac Airport, SEPA, Sustainable Airport Master PlanFolderTechnical Memos
  • 2004-12-15

    Community Benefits Agreement – LAX Master Plan Program

    A comprehensive community benefits agreement between the LAX Coalition and Los Angeles World Airports (LAWA) establishing community benefits, impact mitigations, and oversight mechanisms for the LAX Master Plan Program. The document includes detailed definitions of key terms and establishes requirements for airport contractors, lessees, and licensees.
    TagsLAX, Master PlanFolderLos Angeles
  • 2002-11-04

    KCIA draft master plan and SEPA/EIS and NEPA/EA executive office briefing

    This 2002 executive briefing presents the draft Master Plan and environmental review documents (SEPA/EIS and NEPA/EA) for King County International Airport (Boeing Field), located five miles south of downtown Seattle. The airport, which covers 594 acres and hosts 150 tenant businesses and 479 based aircraft, recorded approximately 290,000 flight operations in 2001. The FAA accepted the Master Plan in Fall 2001 and approved the Airport Layout Plan in March 2002, setting the stage for future development and noise impact assessments.
    TagsEnvironmental Impact Statement, KCIA, Master Plan, NEPA, RCAA, SEPAFolderRCAA
  • 2002-08-01

    Impact/mitigation sites for proposed master plan update improvements at Seattle Tacoma International Airport

    This August 2002 permit application by the Port of Seattle outlines proposed Master Plan Update improvements at Seattle-Tacoma International Airport, including the construction of a third runway, expanded taxiways, cargo facilities, and terminal upgrades. The documents map both on-site and off-site wetland mitigation areas required to offset environmental impacts, with retaining walls and creek relocations used to minimize effects on wetlands and Miller Creek. The project spans multiple sections of King County, Washington, and includes detailed plans for stormwater detention, runway safety areas, and property acquisition boundaries.
    TagsMaster Plan, Miller Creek, Port Of Seattle, RCAA, Sea-Tac Airport, Third RunwayFolderRCAA
  • 2002-08-01

    Impact/mitigation sites for proposed master plan update improvements at Seattle Tacoma International Airport

    This August 2002 document outlines proposed Master Plan Update improvements at Seattle-Tacoma International Airport (Sea-Tac), submitted by the Port of Seattle. It details construction projects including a third runway, runway safety areas, terminal expansions, and air cargo facilities, along with wetland impact mitigation measures in the Miller Creek Basin. The plans include on-site and off-site wetland mitigation areas, MSE retaining walls to minimize environmental impacts, and creek relocations across multiple sections of King County, Washington.
    TagsEnvironmental Impact Statement, Master Plan, Miller Creek, Port Of Seattle, RCAA, Third RunwayFolderRCAA
  • 2001-12-20

    EXH AR026603: Letter USFWS to James M. Lynch — Monitoring Plan Embankment Fill Seepage, Master Plan Update ESA Consultation (1-3-00-F-1420)

    This December 2001 letter from the U.S. Fish and Wildlife Service's Western Washington office provides detailed comments on a Monitoring Plan for Embankment Fill Seepage related to a Sea-Tac Airport Master Plan Update, reviewed under the Endangered Species Act. The agency requested key revisions, including monitoring both seepage quality and quantity, beginning monitoring when seepage first occurs rather than after embankment completion, and ensuring groundwater wells are considered as a monitoring pathway. The letter also clarified that any exceedances of water quality criteria must be reported promptly, and that the Federal Aviation Administration—not the Port—would be responsible for reinitiating formal consultation.
    TagsACC, ESA, FAA, Master Plan, PCHB, Pollution Control Hearings Board, Sea-Tac Airport, Third Runway, Water QualityFolderBox 10
  • 2001-12-01

    EXH AR052659: Low Streamflow Analysis and Summer Low Flow Impact Offset Facility Proposal — Seattle-Tacoma International Airport Master Plan Update Improvements

    Parametrix, Inc. report prepared for Port of Seattle, Seattle-Tacoma International Airport Master Plan Update Improvements, December 2001. AR 052659/052660/052661. Volume 1 includes main text and Appendices B through J. Sub-consultants include Aqua Terra Consultants, Earth Tech Inc., Foster Wheeler Environmental Corporation, HNTB, and Pacific Groundwater Group. Addresses low streamflow analysis and summer low flow impact
    TagsACC, Environmental Impact Statement, Master Plan, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Water QualityFolderBox 22

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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

    [...]

[See all...]


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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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