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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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  • 1999-08-14

    Health issues: What are our children breathing… and how will it affect their health now and in the future?

    This 1999 health advocacy article raises concerns about air quality near airports, listing dozens of toxic chemicals found in jet exhaust — including benzene, formaldehyde, and 1,3-butadiene — and the serious health conditions linked to prolonged exposure, such as cancer, asthma, and lung disease. It references a 1993 EPA study of Midway Airport finding cancer risks more than 400 times the allowable federal limit, and cites Washington State health data showing elevated cancer rates and doubled rates of childhood respiratory disease near Seattle-Tacoma Airport and Boeing Field. The document was published by areco.org as part of a broader campaign highlighting the public health impacts of airport emissions on surrounding communities.
    TagsAviation Emissions, Health, Sea-Tac AirportFolderARECO O'Hare
  • 1999-08-12

    EXH AR043187: Conceptual Flow Model Boundary Presentation — STIA Ground Water Study

    Conceptual Flow Model Boundary Presentation for the Seattle-Tacoma International Airport (STIA) Ground Water Study, prepared by Associated Earth Sciences, Inc. and S.S. Papadopulos and Associates, Inc. for Port Of Seattle. Document AR043187 includes a Project Area Map (Figure 1, dated 08/03/99) showing the data collection boundary, Airport Operations and Maintenance Area (AOMA), wellhead protection delineation
    TagsACC, Ground Operations, Map, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Water QualityFolderBox 18
  • 1999-08-11

    EXH AR045628: Summary of Key Wetland Findings of the Sea-Tac Runway Fill Hydrologic Studies Report

    Parametrix, Inc. summary (August 11, 1999) of key wetland findings from the Sea-Tac Runway Fill Hydrologic Studies Report (Pacific Groundwater Group 2000), prepared for the Port Of Seattle Master Plan Update Improvements JARPA review. Covers wetland delineation conservatism, limiting habitat characteristics of Miller Creek, Walker Creek, and Des Moines Creek, salmonid habitat significance, indirect embankment
    TagsACC, Environmental Impact Statement, Miller Creek, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Third RunwayFolderBox 19
  • 1999-07-01

    EXH AR042527: Subsurface Conditions Data Report — 404 Permit Support, Third Runway Embankment

    Hart Crowser subsurface conditions data report prepared for HNTB Corporation and Port Of Seattle, project J-4978-06, July 1999, supporting 404 permit for Third Runway embankment at Sea-Tac Airport. Covers generalized geologic and hydrogeologic conditions, subsurface soil conditions, hydraulic conductivity estimates, slug testing, water level data, SPT borings (HC99-B31 through HC99-B47), test pits (HC99-TP1 through HC99-TP21,
    TagsACC, Environmental Impact Statement, NEPA, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Third RunwayFolderBox 18
  • 1999-06-30

    EXH AR042505: STIA Ground Water Study — Conceptual Flow Model Presentation

    Conceptual Flow Model Presentation for the Seattle-Tacoma International Airport (STIA) Ground Water Study, prepared by Associated Earth Sciences, Inc. and S.S. Papadopulos and Associates, Inc. for the Port of Seattle, presented to the Washington State Department of Ecology on June 30, 1999. Document outlines study area including Des Moines Creek, Miller Creek, Bow Lake, City
    TagsACC, Ecology, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Water QualityFolderBox 18
  • 1999-06-17

    Fax to ACC: Port Of Seattle Plans to Haul Rock and Concrete to Sea-Tac Airport Site

    A June 1999 fax from Al Furney to Kristen Stewart of the Airport Communities Coalition (ACC) asks whether ACC members are aware of the Port of Seattle's announced plans to haul rock and concrete to the Sea-Tac Airport site. Furney notes that RCAA (Residents Against Airport Noise, or a related community group) is seeking a copy of Merlino's contract with the Port. The fax was copied to the City of Burien, City of Normandy Park, CASE representative Larry Corvari, and Chris Gower.
    TagsACC, CASE, Conveyor, RCAA, Sea-Tac AirportFolderConveyor
  • 1999-05-01

    EXH AR042458: Agreed Order #97TC-N122 — State of Washington Ecology vs. Port Of Seattle, Sea-Tac Airport

    Agreed Order #97TC-N122 issued by Washington State Department of Ecology under RCW 70.105D.050(1) directed to Port Of Seattle regarding hazardous substance contamination at Seattle-Tacoma International Airport (STIA). Documents thirteen contaminated sites within the Aircraft Operations and Maintenance Area (AOMA), a 1/2 square-mile area in the southeast quadrant of the airport, contaminated with jet fuel, gasoline,
    TagsACC, Ecology, MTCA, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Water QualityFolderBox 18
  • 1999-05-01

    Miller Creek Basin: Historic Puget Sound Salmon Stream — Basin Map with Proposed Third Runway Site

    This 1999 document by C. Gower describes the Miller Creek Basin, a historic Puget Sound salmon stream located in the cities of SeaTac, Burien, and Normandy Park in King County, Washington (Water Resource Inventory Area No. 9). The basin includes several lakes — Arbor, Tub, Reba, Lora, and Burien — and drains into Puget Sound via Miller Creek and Walker Creek. The map highlights the proposed Third Runway site at Sea-Tac Airport within the watershed, raising concerns about potential environmental impacts to this salmon-bearing stream system.
    TagsMap, Miller Creek, Puget Sound, Sea-Tac Airport, Third RunwayFolderThird Runway
  • 1999-05-01

    EXH AR017691: Agreed Order #97TC-N122 — State of Washington Ecology vs. Port Of Seattle, Sea-Tac Airport

    Washington State Department of Ecology Agreed Order #97TC-N122 issued to Port Of Seattle for Seattle-Tacoma International Airport (STIA), pursuant to RCW 70.105D.050(1). Documents hazardous substance releases within the Aircraft Operations and Maintenance Area (AOMA), a half-square-mile southeast quadrant of STIA operational since 1944. Contaminants identified include jet fuel (most abundant by bulk volume), gasoline, industrial
    TagsACC, Ecology, MTCA, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Water QualityFolderBox 08
  • 1999-04-22

    EXH AR022190: Stormwater Monitoring Procedure Manual STIA NPDES WA-002465-1 Rev 6

    This is a Procedure Manual for stormwater monitoring at Sea-Tac International Airport, developed by Port of Seattle Environmental Services to comply with NPDES Permit WA-002465-1. It outlines sampling locations, monitoring schedules, deicing event protocols, and quality assurance procedures for collecting and reporting stormwater data. The manual covers topics ranging from automatic and manual sampling methods to laboratory accreditation and discharge monitoring report requirements.
    TagsACC, Deicing, NPDES, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, StormwaterFolderBox 09

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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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