Notes
This document summarizes the proposed Master Plan Update improvement projects at Seattle-Tacoma International Airport, detailing elements that will impact wetlands, floodplains, streams, and drainage channels. Projects include adding a third parallel runway, establishing runway safety areas, developing the South Aviation Support Area, and relocating roads and utilities. The document includes a comprehensive table of all proposed projects covering runways, taxiways, borrow sites, terminal improvements, roads, parking, and stormwater facilities.
