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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.

TagEnvironmental Impact Statement(140)

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  • 2025-01-21

    Senate Bill 5380: Increasing environmental justice by improving government decisions

    Washington Senate Bill 5380 (2025) requires state agencies to evaluate environmental justice impacts when reviewing permits for industrial or potentially harmful projects located in pollution-burdened communities. It mandates the completion of an Environmental Justice Impact Statement and a public hearing within affected communities before project approvals can move forward. The bill aims to reduce cumulative environmental and health disparities across Washington State.
    TagsEnvironmental Impact Statement, Environmental Justice, SB5380, SEPA, Washington State Legislature
  • SAMP Draft EA: How to provide a great public comment

    1How to provide effective public comment by December 13, 2024 Because new ways for you to participate will likely become available, this article may be subject to updates. Introduction This is the second of a two-part article concerning the Sustainable Airport Master Plan Draft Environmental Assessment (SAMP Draft EA). If you’re looking for the short
    CategoriesExplainers TagsEIS, Environmental Impact Statement, SAMP, Sustainable Airport Master Plan
  • The SAMP Comment Period Explainer (Intro)

    Preparing for the October 21st Comment Period This is the first of a two-part article concerning the SAMP comment period. We’re including a few paragraphs of background because the process has been so lengthy–with many years of delay. The feedback we’ve received thus far has been confusion, partly because the information on the Port’s official
    CategoriesExplainers TagsEIS, Environmental Impact Statement, SAMP, Sustainable Airport Master Plan
  • 2024-05-11

    Record of decision: Environmental Impact Statement for proposed increase of EA-18G Growler airfield operations at the NAS Whidbey Island Complex

    The U.S. Navy announced its decision to expand EA-18G Growler jet operations at Naval Air Station Whidbey Island, Washington, by adding 36 aircraft and increasing flight training activities at both Ault Field and Outlying Landing Field Coupeville. Under the chosen plan (Alternative 2A), 80% of field carrier landing practice sessions will occur at OLF Coupeville, with noise-reduction measures included to limit community impact. The full Environmental Impact Statement and supporting documents were made available on the project website in September 2018.
    TagsEnvironmental Impact Statement, Growler Jets, Military Aviation, United States Navy, Whidbey Island
  • 2024-05-07

    ABCx2 review of Arlyn Purcell’s presentation to Burien regarding SAMP EIS near term projects

    This document is a review by ABCx2 of a Port of Seattle presentation to the city of Burien regarding the Sea-Tac Airport Master Plan (SAMP) Environmental Impact Statement. It raises concerns about the Port's decision to limit its environmental review of airport impacts to 2018 rather than 2012, questions whether significant construction growth and flight increases during that period were properly analyzed under federal (NEPA) and state (SEPA) environmental law, and challenges the Port's characterization of the FAR Part 150 noise abatement process as purely voluntary. The document also examines potential consequences if the Port fails to meet noise mitigation commitments tied to federal funding.
    TagsCity of Burien, Environmental Impact Statement, NEPA, Part 150, SAMP
  • STIA_MPU_Final_Supplemental_EIS__May_1997__Vol._3_of_3_1 Appendix G

    TagsEIS, Environmental Impact Statement, Third Runway
  • STIA Master Plan Update Final Supplemental EIS May,1997 Vol. 1 of 3 Main Appendix A-C1

    TagsEIS, Environmental Impact Statement, Third RunwayStudy TopicsAir Quality, Noise, Socioeconomics, Transportation
  • STIA Final Supplemental Environmental Impact Statement EIS MPU Vol 2 of 3 Appendices C2-F

    TagsEIS, Environmental Impact Statement, Third Runway
  • STMPU 1997 05 FSEIS Appendix_C

    TagsEIS, Environmental Impact Statement, Third Runway
  • STMPU 1997 05 FSEIS Appendix_D

    TagsEnvironmental Impact Statement, Third Runway

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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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