STNI Comments on the SAMP Near-Term Projects Draft Environmental Impact Statement, May 2026

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.

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Sea-Tac Noise.Info (STNI) public comment letter to Port Of Seattle AV Environment and Sustainability (Steve Rybolt) on the Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTP) Draft Environmental Impact Statement (DEIS), issued May 2026. Comments address SEPA procedural and analytical deficiencies across three parts: (1) insufficient design detail for 31 NTPs, missing hazardous materials surveys for twelve buildings slated for demolition (160D, 161A, 161E, 161G, 166B, 167A/167B, 170A, 170B, 170C, 170D, 170W, 188WB) including asbestos, lead, and mercury concerns; incomplete Public Records Requests PRR 26-610 and PRR 26-949 for AEDT and TAAM modeling files, IWTP Basis of Design Report, IWS Alternatives Analysis, and Cultural Resources Assessment; and improper baseline treatment folding the Third Runway and over $5 billion in post-2008 capacity-adding projects (North Satellite Modernization, International Arrivals Facility, Baggage Optimization, SEA Gateway, C Concourse expansion, S Concourse Evolution) into existing conditions rather than cumulative impact analysis. Cites WAC 197-11-635, WAC 197-11-080, FONSI/ROD, TAAM, and operations forecasts of 540,000 annual operations by 2034.

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