Notes
Final Environmental Impact Statement (EIS) prepared jointly by the Federal Aviation Administration (FAA) Northwest Mountain Region and the Port of Seattle for the Seattle-Tacoma International Airport (Sea-Tac) Master Plan Update, dated February 1996, AR038744. Covers proposed development actions 1996-2020 including a new third parallel runway (Runway 16X/34X) up to 8,500 feet long separated 2,500 feet from existing Runway 16L/34R, extension of Runway 34R by 600 feet, standard Runway Safety Areas for Runways 16R/34L and 16L/34R, new air traffic control tower, North Unit Terminal, Main Terminal improvements, parking and access expansion, South Aviation Support Area for cargo and maintenance, and support facilities relocation. Examines Alternative 3 as Preferred Alternative. Combined NEPA and Washington State Environmental Policy Act (SEPA) document addressing wetland impacts, floodplain encroachment, stream relocation, noise, air quality, and water quality. References 1992 Flight Plan Final EIS, Major Supplemental Airport Study (MSA), Puget Sound Regional Council (PSRC), Clean Air Act conformity statement, FEMA Flood Insurance Rate Map, 42 U.S.C. 4321, 49 USC Subtitle VII, RCW 43.21C. Responsible Federal Official: Dennis Ossenkop; SEPA contact: Barbara Hinkle; signed by Lowell H. Johnson, Manager, Northwest Mountain Region Airports Division.