TagEnvironmental Impact Statement(140)

Presentation about the Port of Seattle’s Sustainable Airport Master Plan Near-Term Projects, covering the completed NEPA process and the required SEPA Draft Environmental Impact Statement. The document outlines various airport infrastructure projects including runway improvements, terminal facilities, maintenance facilities, and cargo operations planned for Sea-Tac Airport.

The Port of Seattle presented a draft Environmental Impact Statement under Washington State's environmental review law (SEPA) for a set of near-term construction projects at Seattle-Tacoma International Airport. The projects, part of the Sustainable Airport Master Plan, include expansions and improvements such as new gates, taxiway extensions, a second terminal, cargo facilities, and roadway upgrades. The presentation outlined the environmental review process and next steps, including public outreach and engagement.

This is the agenda for the Port of Seattle Commission Regular Meeting held on May 26, 2026, covering a range of port business items including infrastructure projects at Seattle-Tacoma International Airport (SEA). Key topics include the S Concourse Evolution program (authorized up to $300 million), the Main Terminal Improvement Program emergency power design, and a briefing on the Sustainable Airport Master Plan Near-Term Projects Environmental Review, including a SEPA Draft Environmental Impact Statement. The meeting was held both in person at Sea-Tac Airport and virtually via Microsoft Teams.

The Port of Seattle released a Draft Environmental Impact Statement (DEIS) under the State Environmental Policy Act (SEPA) for the Sustainable Airport Master Plan Near-Term Projects at Sea-Tac Airport, finding that surface transportation is the only category with significant impacts requiring mitigation. The review examined sixteen environmental categories including noise, air quality, and community impacts, with a 60-day public comment period running from May 22 to July 21, 2026, including in-person meetings in SeaTac, Burien, Des Moines, and Federal Way. A final SEPA determination is expected by the end of 2026.