TagSustainable Airport Master Plan(237)

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes constrained operating growth scenarios, FAA-approved forecast data, and airside simulation modeling documentation used to support environmental review planning at Sea-Tac.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes constrained operating growth scenarios (COGS), FAA approval documentation, and airside modeling data used to support environmental review planning. The forecast serves as a foundational planning tool for understanding future airport capacity and operational assumptions.

The Sea-Tac Airport Sustainable Airport Master Plan (SAMP) Near-Term Project Environmental Review outlines a comprehensive set of planned improvements at Seattle-Tacoma International Airport, covering airside, landside, terminal, cargo, and airport support facilities. Key projects include taxiway and runway upgrades, a new second terminal with associated roads and parking, cargo facility expansions, and sustainability initiatives such as sustainable aviation fuel infrastructure and consolidated de-icing tanks. These near-term projects are intended to enhance airport capacity, safety, and operational efficiency while supporting the airport's long-term growth strategy.

The Washington Aviation System Plan (WASP) Airport Site Selection Study presented findings to the Commercial Aviation Coordinating Commission (CACC) on March 30, 2023, covering a secondary screening analysis and airspace review for potential greenfield airport sites in Washington State. The presentation also included preliminary air cargo forecasts to help evaluate future commercial aviation capacity needs for the region.

The Regional Commission on Airport Affairs (RCAA) submitted formal scoping comments on the proposed Sea-Tac Airport Master Plan Update, which includes the addition of a third runway, calling for the Environmental Impact Statement to comply fully with both federal NEPA and state SEPA requirements. The RCAA emphasized that the EIS must be a comprehensive, nonpartisan document that is accessible to ordinary citizens and public officials, complete with proper citations, consistent terminology, indexed appendices, and clearly sourced maps and data. The comments also urged that all environmental impacts be analyzed across multiple time horizons, including the full useful life of the proposed runway, and that all study documents be made freely available to the public throughout King and Pierce Counties.