This 1996 Final Environmental Impact Statement, prepared jointly by the FAA and the Port of Seattle, evaluates the environmental effects of proposed expansion and improvement projects at Seattle-Tacoma International Airport, including the construction of a third parallel runway, terminal upgrades, and expanded parking and cargo facilities. The document examines a range of impacts such as wetland disturbance, floodplain encroachment, stream relocation, and noise, water, and air quality effects on surrounding communities. The proposed improvements were planned for completion between 1996 and 2020, with early phases prioritizing the new runway and existing terminal and access enhancements.Open full document
Notes
This Final Environmental Impact Statement (EIS), prepared jointly under NEPA and Washington State Environmental Policy Act (SEPA), assesses the environmental impacts of proposed development actions at Seattle-Tacoma International Airport as part of a Master Plan Update. Key proposed actions include construction of a third parallel runway (16X/34X) up to 8,500 feet long, runway extensions, a new air traffic control tower, terminal improvements, and cargo/maintenance facility development. The document covers impacts including wetland effects, floodplain encroachment, stream relocation, and air quality and noise impacts for improvements planned through 2020.