Notes
Draft Environmental Impact Statement (EIS) summary prepared by the Port of Seattle under the State Environmental Policy Act (SEPA) for the Sustainable Airport Master Plan (SAMP) 31 Near-Term Projects (NTPs) at Seattle-Tacoma International Airport (SEA). Documents proposed expansion to accommodate 56 million projected annual passengers through 2032, including a second terminal and concourse with 19 additional aircraft gates, elevated busway linking rental car facility and terminals, cargo facilities, airfield taxiway updates (A01–A10), landside roadway realignment, Northeast Ground Transportation Center, employee parking structure, sustainable aviation fuel facilities, ARFF facilities, and airline support buildings. Exhibit S-1 maps all proposed NTP locations by category: Second Terminal Projects (T01, T02), Cargo Expansion (C01–C03), Airfield Operational and Safety/Standards Projects, and Sustainable Aviation Fuel Projects (S01). Filed May 2026 as part of the SAMP SEPA EIS process.