TagSea-Tac Airport(2010)

This 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.

The 1988-2020 Regional Airport System Plan, published in October 1987, outlines policies for managing and developing public-use airports across King, Kitsap, Pierce, and Snohomish counties through the year 2020. A central finding is that Sea-Tac Airport was projected to reach full capacity within 10 to 15 years, with intolerable aircraft delays expected unless alternative measures were taken. The plan also addresses noise and flight track mitigation programs, land use compatibility near airports, and the potential role of satellite airports such as Paine Field, Bremerton National, and Tacoma Narrows in relieving pressure on Sea-Tac.

This 1981 airspace study, prepared by Peat, Marwick, Mitchell & Co., examines how the shared use of airspace between Seattle-Tacoma International Airport (Sea-Tac) and King County International Airport (Boeing Field) affects the capacity of both airports. The two-phase study analyzes projected congestion and delays through the year 2000 and evaluates operational and policy alternatives to reduce airspace conflicts. A public information program was also included to keep the community informed of the study's findings and implications.