TagSAMP Draft EA(34)

The Port of Seattle is preparing an Environmental Assessment for 31 near-term improvement projects at Seattle-Tacoma International Airport (SEA), covering upgrades to taxiways, runways, terminals, and support facilities. The projects, expected to be operational by 2032, aim to reduce crowding, long lines, and flight delays that have grown as passenger demand has increased. The Federal Aviation Administration (FAA) will review the findings to determine whether the projects will significantly impact the surrounding environment, potentially affecting noise levels for nearby communities.

Four cities neighboring Seattle-Tacoma International Airport — Burien, Normandy Park, SeaTac, and Des Moines — submitted formal comments on the airport's Sustainable Airport Master Plan Environmental Assessment, raising concerns about aircraft noise, air quality, and community health impacts. The letter argues that standard noise metrics like DNL 65 dBA fail to capture residents' real experiences, and calls for supplemental noise measurements, expanded sound insulation programs, and broader mitigation efforts beyond current regulatory thresholds. The cities urge the Port of Seattle to collaborate directly with local communities throughout the environmental review process to ensure that airport growth does not disproportionately burden adjacent neighborhoods.