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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.

TagSea-Tac Airport(2023)

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  • 2025-08-12

    Port Of Seattle Commission Regular Meeting — Q2 2025 YTD Operating Expenses Financial Summary (Slide 210)

    A financial summary slide showing Q2 2025 Year-To-Date operating expenses of $264M actual versus $273M budgeted, resulting in $9.2M or 3.4% under budget. Key variances include a $5M payroll overrun, $18M underspend in outside services, $6.4M higher other expenses, and $2.3M lower central services charges.
    TagsBudget, Port Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2025-08-12

    Sea-Tac Airport 2025 Passenger Forecast vs. Budget — RM Packet (Page 209)

    A bar chart from a Sea-Tac Airport budget/forecast presentation (page 209 of 292) showing actual total passengers from 2021 (36.2M) through 2024 (52.6M), alongside a 2025 budget of 53.5M and 2025 forecast of 53.1M. The slide notes a 0.9% forecast growth compared to 2024 actual, and that the 2025 forecast is 0.7% lower than budget.
    TagsBudget, Forecast, PAX, Port Of Seattle, Sea-Tac Airport
  • 2025-08-12

    Port Of Seattle Aviation Division 2025 Second Quarter Financial Performance Report — Title Slide (Page 208)

    Title slide for the Port of Seattle Aviation Division's 2025 Second Quarter Financial Performance Report, bearing the Port of Seattle logo. This document appears on page 208 of a 292-page report.
    TagsPort Of Seattle, Sea-Tac Airport
  • 2025-08-12

    Sea-Tac Airport Operational Highlights — Slide 207 (August 12, 2025 RM Packet)

    A presentation slide summarizing key operational highlights for Seattle-Tacoma International Airport (SEA), including projected 2025 passenger volume of 53.1M (0.9% above 2024 actuals), a 2025 cruise season with 298 sailings and 1.9M revenue passengers, Q2 operating revenues $1.2M above budget, and total capital spending projected at $927.0M. The accompanying photo shows passengers at SEA Security Checkpoint 3 with a visible 'SEA Visitor Pass' sign.
    TagsAirport Highlights, Cruise Ships, Port Of Seattle, Sea-Tac Airport
  • 2025-08-12

    Port Of Seattle Q2 2025 Financial Performance Report Cover — August 12, 2025 RM Packet (Page 206)

    Cover page of the Port of Seattle Q2 2025 Financial Performance Report, presented as Item Number 11a supp at a meeting dated August 12, 2025. The image shows the Port of Seattle headquarters building with flags flying, and the document is page 206 of 292.
    TagsPort Of Seattle, Port Of Seattle Commission, Sea-Tac Airport
  • 2025-08-12

    Sea-Tac Airport 2025 Capital Expenditures Financial Summary — RM Packet Page 252

    A financial summary table from what appears to be a Seattle-Tacoma International Airport board or budget report (page 252 of 292) detailing 2025 capital expenditures, showing projects including C Concourse Expansion, SEA Gateway, Post IAF Airline Realignment, and others, with total spending of approximately $806.9M forecast against a $816.3M budget. Footnotes explain variances for each major project.
    TagsAirport Expansion, Budget, capital improvements, Port Of Seattle, Sea-Tac Airport
  • 2025-08-11

    Part 150 Study Technical Review Committee: Meeting #4 Agenda, August 11, 2025

    This document is the agenda and attendance record for the fourth meeting of the Part 150 Study Technical Review Committee, held on August 11, 2025, at Seattle-Tacoma International Airport. The meeting covered updates on Phase 1 Noise Exposure Mapping, a kickoff for Phase 2 Noise Compatibility Program planning, and a review of the project schedule. Representatives from neighboring cities, airlines, King County, the FAA, and the Port of Seattle participated as members or liaisons.
    TagsFAA, Noise Exposure Update, Part 150, Port Of Seattle, Sea-Tac Airport
  • 2025-08-11

    Part 150 Study Technical Review Committee: Meeting #4 Agenda, August 11, 2025

    Agenda and roll call for the Part 150 Study Technical Review Committee (TRC) Meeting #4 at Seattle-Tacoma International Airport, held August 11, 2025. TRC members include representatives from Alaska Airlines, Delta Airlines, King County, Burien, Des Moines, SeaTac, Federal Way, Normandy Park, and Tukwila. FAA liaisons from Seattle CEO office, Western Service Center ATO, and
    TagsFAA, Noise Exposure Update, Part 150, Port Of Seattle, Sea-Tac Airport
  • 2025-08-08

    Acoustical Testing Results for SIRRPP — August 2025

    This August 2025 technical report by Harris Miller Miller & Hanson Inc. (HMMH) presents the results of interior sound insulation testing conducted at 28 homes near Seattle-Tacoma International Airport (SEA) in July 2025. Using FAA-approved measurement methods, acoustical engineers tested every habitable room in each home to determine how much aircraft noise penetrates indoors, with a threshold of 45 decibels (dB) required for a home to qualify for sound insulation assistance. Of the 28 structures tested, only two met the 45 dB qualification threshold, while nine others had at least one room exceeding that level but did not qualify under current FAA policy.
    TagsFAA, HMMH, Noise Mitigation, Sea-Tac Airport, SIRRPP, Sound Insulation
  • Sea repairreplace acoustmemo hmmh aug2025 pdf
    2025-08-08

    Acoustical Testing Results for SEA Repair and Replacement Program

    Technical memorandum from Harris Miller Miller & Hanson (HMMH), authored by Eric Cox and addressed to Julie Kinzie, reporting acoustical testing results for the Seattle-Tacoma International Airport (SEA) Repair and Replacement Program, July 2025. Testing covered 28 residential structures in Burien and SeaTac to determine median interior Day-Night Average Sound Level (DNL) values per FAA
    TagsFAA, HMMH, Noise Mitigation, Sea-Tac Airport, SIRRPP, Sound Insulation

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Upcoming Events

  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
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    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

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    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
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    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

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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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