TagEnvironmental Impact Statement(400)

The Port of Seattle is advancing a set of Near-Term Projects under its Sustainable Airport Master Plan (SAMP) for Seattle-Tacoma International Airport, covering infrastructure improvements such as new gates, taxiway extensions, runway blast pads, and cargo facilities. The plan is subject to both federal (NEPA) and state (SEPA) environmental review, with a Draft Environmental Impact Statement being prepared to assess potential impacts. Public and regulatory next steps include finalizing the EIS and communicating outcomes to stakeholders and surrounding communities.

This document is the agenda for the Port of Seattle Regular Commission Meeting held on March 24, 2026, covering routine governance matters such as approval of meeting minutes, claims and obligations totaling over $144 million, and several authorization requests for contracts and collective bargaining agreements. The meeting was held both in person at Seattle-Tacoma International Airport and virtually via Microsoft Teams. No specific noise policy items appear on this agenda; primary topics include environmental support contracts, a water reservoir rehabilitation project, Oracle software licensing, and labor agreements for airport staff.

Port Of Seattle Commission presentation (Item 8j supp) dated March 24, 2026 requesting $1,000,000 additional contract authorization for the Sustainable Airport Master Plan (SAMP) Near-Term Projects Environmental Review. Total authorizations including this request reach $9,750,000, following previous authorizations of $3,000,000 (11/10/2015), $3,400,000 (2/25/2021), and $2,350,000 (6/27/2023). Budget increase justified by enhanced outreach and engagement in

This document outlines principles and steps for conducting cumulative effects analysis in environmental impact assessments. It covers identifying cumulative effects issues, establishing geographic and temporal boundaries, and determining which effects are important from a cumulative perspective. https://ceq.doe.gov/docs/ceq-publications/ccenepa/sec2.pdf

This document introduces the concept of cumulative environmental effects analysis under NEPA, explaining how multiple minor actions can combine to create significant environmental impacts. It defines cumulative effects as impacts resulting from incremental effects of actions combined with past, present, and future actions, and discusses the purpose and implementation of cumulative effects analysis by federal

This document is a formal response to public comments on the Sea-Tac/Communities Plan Draft Environmental Impact Statement, addressing concerns about the airport's Noise Remedy Program. It explains that noise program classifications for petition signers were upgraded due to factors such as summer flight patterns and proximity to approach paths, and that most signers were moved into the Purchase Guarantee area or recommended for the Cost Sharing Insulation Program. The response also notes that no specific schedule exists for noise remedy implementation due to uncertainties in federal funding, and that detailed land-use planning for acquisition areas will involve full citizen participation after properties are acquired.

The cities of Burien, Des Moines, Normandy Park, and SeaTac have entered into a formal interlocal agreement to coordinate their review of, and potential legal challenges to, the Port of Seattle's Sustainable Airport Master Plan, which could bring significant growth and environmental impacts to their communities over the next 20 years. Under the agreement, the four cities will jointly hire environmental consultants and legal counsel, share costs proportionally based on population, and issue unified comment letters during the NEPA and SEPA review processes. The City of SeaTac is designated as the lead administrator for contracts and finances, while all four cities must unanimously agree before filing any joint legal appeal.