TagEnvironmental Impact Statement(328)

A concerned resident living near Sea-Tac Airport submitted formal comments arguing that the airport's Master Plan Environmental Impact Statement (EIS) is deeply flawed, citing inconsistent data, outdated figures, lack of cumulative impact analysis, and poor document organization across its 6,000 pages. The commenter contends that the EIS fragments project reviews to minimize apparent harm, uses selectively chosen baselines to downplay environmental and health impacts on surrounding communities, and fails to address a full build-out scenario. The primary demand is that the EIS be completely redone with transparent assumptions, holistic cumulative impact analysis, up-to-date data, and accessible cross-referenced documentation.

Joint comment letter filed August 20, 2026 by the Cities of SeaTac, Burien, and Des Moines to Port Of Seattle Senior Environmental Program Manager Steve Rybolt on the Draft SEPA Environmental Impact Statement (DEIS) for the Sustainable Airport Master Plan Near-Term Projects (SAMP NTPs) at Seattle-Tacoma International Airport (SEA). The letter documents cross-cutting deficiencies in

Sea-Tac Noise.Info (STNI) submitted formal comments in August 2026 challenging the Port of Seattle's Draft Environmental Impact Statement for its Sustainable Airport Master Plan, arguing the review is procedurally and analytically flawed. Key concerns include insufficient project design detail to support impact conclusions, missing hazardous materials surveys for 12 buildings slated for demolition, withheld technical documents that the public cannot independently verify, and the exclusion of over $5 billion in prior airport expansion projects from cumulative impact analysis. STNI requests the Port complete additional surveys and design work, extend the public comment period, and recalculate growth impacts using a pre-Third Runway baseline before finalizing the EIS.

Seattle resident David Ortman submitted formal comments on the Port of Seattle's Draft Environmental Impact Statement for its 'Sustainable' Airport Master Plan, arguing that the DEIS fails to adequately address noise and air pollution impacts on surrounding communities, property value effects, and meaningful alternatives to expansion. Ortman criticizes the Port for not issuing a full Sea-Tac EIS in over 30 years and for dismissing alternatives such as relocating airport operations to Joint Base Lewis-McCord. He also demands that airlines, not taxpayers, bear the costs of pollution mitigation, and calls for removal of the word 'sustainable' from a plan he views as promoting unchecked growth at a severely constrained airport.

Port Of Seattle Commission special meeting agenda for August 11, 2026, 3:00 p.m., held at Port of Seattle Headquarters Building Commission Chambers, 2711 Alaskan Way, Pier 69, Seattle, WA 98121. Single agenda item: informal public listening session on the State Environmental Policy Act (SEPA) Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTP) Draft Environmental Impact

In July 2026, the city managers of Burien, Des Moines, and SeaTac jointly wrote to Port of Seattle Commissioners demanding that the public comment period for the Sustainable Airport Master Plan's Draft Environmental Impact Statement be extended from 60 to at least 120 days. The cities argued that the document's enormous size (over 6,000 pages), technical complexity, and missing underlying data made meaningful review within 60 days impossible, particularly for lower-resource community members most affected by airport impacts. The letter also called on the Port to honor its own equity commitments by ensuring historically overburdened communities surrounding the airport have a genuine opportunity to participate in the review process.

The cities of Burien, Des Moines, and SeaTac held a Community Open House to demand equity for communities impacted by Sea-Tac Airport, presenting concerns about a Draft Environmental Impact Statement (DEIS). The cities argue the DEIS fails to adequately address hazardous materials risks—including incomplete PFAS contamination mapping and insufficient evaluation of off-site pollution migration—and does not properly demonstrate how airport expansion affects nearby neighborhoods, parks, and land use. Key deficiencies identified include reliance on future regulatory compliance rather than current evidence, and a lack of clear analysis linking land use conclusions to technical findings.

The City of Burien, Des Moines, and SeaTac co-hosted a Community Open House on July 14, 2026, to present the Draft Environmental Impact Statement (DEIS) for Seattle-Tacoma International Airport's Sustainable Airport Master Plan (SAMP). The meeting covered proposed airfield, terminal, cargo, and landside expansion projects, along with their potential environmental impacts on surrounding communities. Residents were invited to learn about next steps and submit public comments on the plan.