Three City Summary of Draft Mediation Issue Proposals

2026.01.26 three city summary and mediation issues for FAA and port of seattle pdf

This document outlines 18 proposed mediation issues submitted by the cities of SeaTac, Burien, and Des Moines in response to the FAA's environmental review of Seattle-Tacoma International Airport's Sustainable Airport Master Plan (SAMP) expansion projects. The proposals seek voluntary commitments from the Port of Seattle and FAA covering a wide range of community concerns, including nighttime flight noise reduction, air quality monitoring, sound insulation for schools and homes, traffic improvements, and a community benefits fund. All proposals are designed to work within existing legal frameworks without requiring the FAA or Port to reopen the environmental assessment.

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Summary of eighteen draft mediation issue proposals prepared for the Cities of SeaTac, Burien, and Des Moines in connection with their Petition for Review of the FAA’s Final EA and FONSI/ROD for the Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTPs). Proposals target the Port of Seattle and FAA and cover: voluntary preferential runway use coordination (Part 161), emissions reduction and clean technology (electrified GSE, SAF, AIP, PFC), community health monitoring (UFPs, NO2, FAA Order 1050.1G), discretionary grant eligibility for local infrastructure, voluntary sound insulation expansion beyond 65 dB DNL contour (Part 150), transportation improvements, LED lighting and visual buffers, green infrastructure and wetland restoration, voluntary community benefits fund ($1–2 million), financial mitigation for lost property tax base and Surface Water Utility costs (Des Moines Creek estuary), SEPA mitigation for tree loss and construction noise, school air filtration and education partnerships, traffic mitigation interlocal agreements, cumulative impacts monitoring framework, historic growth documentation since 2012, SEPA process clarification, SEPA review of L06 employee parking and C02/C03 cargo facilities, and SR 509 transit and traffic impact analysis.

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