The cities of SeaTac, Burien, and Des Moines jointly wrote to the Port of Seattle on May 18, 2026, requesting a 90-day public comment period for the Sustainable Airport Master Plan (SAMP) Draft Environmental Impact Statement. The cities cited the document's technical complexity, overlapping regional demands including 2026 FIFA World Cup preparations, summer scheduling constraints, and unresolved concerns from the prior federal environmental review as reasons more time is needed. The letter was signed by the SEPA Responsible Officials from all three cities and emphasizes that airport-related impacts on noise, air quality, transportation, and public health directly affect their communities.Open full document
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Joint letter from the Cities of SeaTac, Burien, and Des Moines requesting the Port of Seattle extend the public and agency comment period for the Sustainable Airport Master Plan Draft SEPA Environmental Impact Statement to 90 days. The Cities cite the need for adequate review time due to the scope and complexity of the SAMP, overlapping 2026 FIFA World Cup preparations, and the need to coordinate across multiple departments and stakeholders.