Des Moines advisory committee presses for transparency on SeaTac SAMP, plans survey and public outreach

Members of a Des Moines citizens advisory committee pressed for clearer evidence and stronger community engagement during a wide-ranging review of the SeaTac Airport Master Plan (SAMP) and related environmental-review timing.

The committee agreed to refine a work plan and present it to the city council on Jan. 22; members also endorsed developing a short resident survey, an email/form response template for noise complaints and at least one focused public outreach meeting to inform the SEPA comment period.

Why it matters: committee members said the SAMP’s passenger and operations projections could meaningfully change local noise, traffic and health outcomes. Several members urged the committee to prioritize mitigation and public clarity rather than accept rapid operational increases.

At the meeting Speaker 1 (committee member) said the committee must polish its work plan wording because "this is gonna start impacting us with more operations right away," and asked staff to confirm the data source behind the projection numbers members had seen. Speaker 5 (committee member) urged caution, arguing the committee should "do no more harm until we have solid studies on sound and pollution, health effects," and recommended prioritizing mitigation (trees, noise abatement, funding) while the environmental process proceeds.

Members questioned how the plan’s headline numbers were derived. Participants cited a current baseline near 52 million annual passengers and a projection mentioned in discussion to about 56 million by 2032; several members said they wanted to know whether those figures come from population-driven travel demand studies or from airline/port operational planning. Committee members and staff also discussed how NextGen air-traffic procedures, new taxiways and controller staffing affect capacity: members were told NextGen and taxiway work can tighten separations and increase hourly throughput, but that wake-turbulence limits and controller availability remain constraints.

On timing, staff summarized past NEPA experience and said the draft environmental-impact statement (EIS) is anticipated in 2026; the committee has asked for 30 days' public notice but expects an initial comment window of perhaps 15–20 days. Members discussed whether the city should repeat the public forums used during the NEPA stage and agreed to recommend to council that the city consider at least focused open houses or an educational session to help residents submit SEPA comments.

The committee reviewed constituent communications and a draft email/form reply the group could use to acknowledge noise complaints and steer residents to the official FAA and Port of Seattle complaint channels. Speaker 3 (committee member) said they prepared a flyer explaining the NEPA and SEPA processes and offered to distribute it and to send sample responses; members agreed that any response using the committee template should be labeled clearly as committee-level and not an official council response.

Next steps: the committee will refine the three-point work plan, circulate revised wording by email, and seek formal approval at the next meeting prior to the Jan. 22 council presentation. Members also agreed to develop a short resident survey to field priorities (noise, traffic, health) with timing aimed at late spring or early summer to capture higher-operation months. The committee approved the minutes from the prior meeting by voice vote; the transcript does not record a numerical tally for that vote.

What remains unresolved: the committee did not reach agreement on a single remedy to limit operations; some members favored a no-growth approach pending additional health and sound studies, while others acknowledged the Port/FAA technical path to increase throughput. The committee asked staff to track the draft EIS release and to return with a proposed survey and public-engagement plan for council review.