TagSEPA(293)
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2025-10-22Programmatic Environmental Checklist – Seattle-Tacoma International Airport Flight Corridor Management Program
★Environmental checklist for SEA’s Flight Corridor Management Program, which identifies and removes tree obstructions from airport flight corridors every five years to comply with FAA regulations. The document outlines the program’s background, implementation cycles, and environmental review process. -
1996-01-01Resolution No. 3212, as amended
★ 32Resolution No. 3212, adopted by the Port of Seattle in 1996, approved the construction of a new third runway at Seattle-Tacoma International Airport (Sea-Tac) to address growing air traffic demand and reduce delays caused by poor weather conditions. The resolution followed years of regional studies, environmental impact reviews, and public involvement, including findings that no feasible alternative airport sites existed in the four-county area. It also committed the Port to fulfilling additional noise reduction measures as required by Puget Sound Regional Council Resolution A-96-02. -
2026-08-20NEPA Flow to SEPA: Process Status Diagram
Diagram illustrating the sequential relationship between the federal-level NEPA (National Environmental Policy Act) process and the state-level SEPA (State Environmental Policy Act) process. The NEPA phase is marked “COMPLETE” while the SEPA phase is marked “Under Review.” Includes a U.S. map icon for NEPA and a Washington State map icon for SEPA. -
2026-08-20Comments from Sea-Tac, Burien, and Des Moines on the SEPA Draft EIS for Sea-Tac Airport SAMP NTP
Joint comment letter filed August 20, 2026 by the Cities of SeaTac, Burien, and Des Moines to Port Of Seattle Senior Environmental Program Manager Steve Rybolt on the Draft SEPA Environmental Impact Statement (DEIS) for the Sustainable Airport Master Plan Near-Term Projects (SAMP NTPs) at Seattle-Tacoma International Airport (SEA). The letter documents cross-cutting deficiencies in -
2026-08-20
Comments of the Cities of Sea-Tac, Burien, and Des Moines on the Draft SEPA Environmental Impact Statement for the Seattle-Tacoma International Airport Sustainable Airport Master Plan Near-Term Projects
Joint comment letter filed August 20, 2026 by the Cities of SeaTac, Burien, and Des Moines to Port Of Seattle Senior Environmental Program Manager Steve Rybolt on the Draft SEPA Environmental Impact Statement (DEIS) for the Sustainable Airport Master Plan Near-Term Projects (SAMP NTPs) at Seattle-Tacoma International Airport (SEA). The letter documents cross-cutting deficiencies in -
2026-08-20SAMP: The unSustainable Airport Master Plan — SEPA public comment flyer August extension
Advocacy flyer from Sea-Tac Noise.Info opposing the Sea-Tac Airport Sustainable Airport Master Plan (SAMP), characterizing it as the 'UnSustainable Airport Master Plan' and warning of one-third more flights, noise, and pollution with no mitigation or compensation. The flyer announces a SEPA Public Comment period running May 22 through August 20, 2026, and directs the public to STNI.INFO/SAMP/ for updates. -
Appendix K SEPA Environmental Justice Disparities Map page 124
Appendix K of this environmental review examines socioeconomic conditions, environmental justice, and children's health and safety risks in the area surrounding the proposed project. It finds that 23.3% of the population in the study area is under 18—higher than both King County and statewide averages—and identifies two schools within the project boundary that could expose children to environmental health risks. The appendix also includes an economic impact analysis for the Northwest Seaport Alliance and a separate environmental justice memorandum prepared under Washington State's environmental review process. -
2026-08-11Port of Seattle Commission Special Meeting – SEPA SAMP Near-Term Projects DEIS Listening Session
I. Call to Order – 3:00 p.m. II. Item of Business – 3:00 p.m. – 4:00 p.m. Port of Seattle Commission Listening Session Re: State Environmental Policy Act (SEPA) Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTP) Draft Environmental Impact Statement (DEIS) ***This is not an official public hearing. The Port Commission is providing this -
2026-08-11
Port Of Seattle Commission Special Meeting Agenda: SEPA SAMP Near-Term Projects Draft Environmental Impact Statement Listening Session
Port Of Seattle Commission special meeting agenda for August 11, 2026, 3:00 p.m., held at Port of Seattle Headquarters Building Commission Chambers, 2711 Alaskan Way, Pier 69, Seattle, WA 98121. Single agenda item: informal public listening session on the State Environmental Policy Act (SEPA) Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTP) Draft Environmental Impact -
2026-08-11
Port Of Seattle Commission Special Meeting Agenda: SEPA SAMP Near-Term Projects Draft Environmental Impact Statement Listening Session
Port Of Seattle Commission special meeting agenda for August 11, 2026, 3:00 p.m., held at Port of Seattle Headquarters Building Commission Chambers, 2711 Alaskan Way, Pier 69, Seattle, WA 98121. Single agenda item: informal public listening session on the State Environmental Policy Act (SEPA) Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTP) Draft Environmental Impact