TagEnvironmental Impact Statement(400)
-
1997-05-07Final supplemental environmental impact statement: Proposed master plan update, Seattle-Tacoma International Airport
★ 32This Final Supplemental Environmental Impact Statement (FSEIS) evaluates proposed updates to the Master Plan for Seattle-Tacoma International Airport, examining the effects of revised aviation demand forecasts on runway capacity, safety improvements, and landside facilities. It analyzes a range of alternatives to address poor-weather airfield performance, runway length needs for Pacific Rim flights, and runway safety area compliance with FAA standards. The document also assesses environmental consequences including noise impacts on surrounding communities, air quality, wetlands, and construction effects. -
1997-02-01Sea-Tac International Airport impact mitigation study: Initial assessment and recommendations
★ 32The HOK Study. 1997 initial assessment and recommendations report for the Sea-Tac International Airport Impact Mitigation Study, prepared by Hellmuth, Obata + Kassabaum and Raytheon Infrastructure Services. The study was funded by a State of Washington grant on behalf of the cities of Burien, Des Moines, Federal Way, Normandy Park, and Tukwila, as well as -
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 -
2026-08-11Port 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 -
2026-07-31Mitigation bank project sites map
A map showing potential mitigation sites and existing Port of Seattle habitat sites in the greater Seattle area, including Terminal 25, Terminal 117, and the Auburn Site. The map covers cities including Seattle, Burien, Tukwila, SeaTac, Des Moines, Federal Way, Kent, Renton, and Auburn. Sites are categorized by land use type including storage, vacant, and -
2026-07-16Joint letter from Burien, Des Moines, and SeaTac requesting extension of SAMP SEPA DEIS comment period
In July 2026, the city managers of Burien, Des Moines, and SeaTac jointly wrote to Port of Seattle Commissioners demanding that the public comment period for the Sustainable Airport Master Plan's Draft Environmental Impact Statement be extended from 60 to at least 120 days. The cities argued that the document's enormous size (over 6,000 pages), technical complexity, and missing underlying data made meaningful review within 60 days impossible, particularly for lower-resource community members most affected by airport impacts. The letter also called on the Port to honor its own equity commitments by ensuring historically overburdened communities surrounding the airport have a genuine opportunity to participate in the review process. -
2026-07-16
Joint letter from Burien, Des Moines, and SeaTac requesting extension of SAMP SEPA DEIS comment period
In July 2026, the city managers of Burien, Des Moines, and SeaTac jointly wrote to Port of Seattle Commissioners demanding that the public comment period for the Sustainable Airport Master Plan's Draft Environmental Impact Statement be extended from 60 to at least 120 days. The cities argued that the document's enormous size (over 6,000 pages), technical complexity, and missing underlying data made meaningful review within 60 days impossible, particularly for lower-resource community members most affected by airport impacts. The letter also called on the Port to honor its own equity commitments by ensuring historically overburdened communities surrounding the airport have a genuine opportunity to participate in the review process.