Notes

Presentation by UW Center for Environmental Health Equity (CEHE) team — Elena Austin, Edmund Seto, Timothy Larson, Ningrui Liu, and Janice North (DEOHS/Epidemiology) — to the Airport Round Table Advisory Committee on August 11, 2025. Covers aviation air pollution health impacts in King County including leaded aviation gasoline (avgas), ultrafine particles, nitrogen oxides, and Jet A fuel. Documents that King County airports account for 70% of airborne lead emissions in the county (1.23 tons, 2020 data). Cites EPA 2023 endangerment finding for aircraft lead emissions, blood lead level (BLL) studies from California (Zahran 2022), North Carolina (Soale 2024), Colorado (Berg 2024), and Bellingham WA lead deposition sampling (Shull 2025). Piston-engine aircraft account for ~70% of U.S. airborne lead emissions (Klemick 2022). Discusses neurological, cardiovascular, and respiratory health harms near airports with piston-engine and jet traffic.

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StART SEA Stakeholder Advisory Round Table
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Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures
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Commercial Aviation Work Group
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Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant
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As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.

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