TagSAMP(642)

Three Washington cities near Seattle-Tacoma International Airport — Burien, Des Moines, and SeaTac — filed a legal challenge on November 24, 2025, asking a federal appeals court to review the FAA's September 2025 decision approving near-term construction and expansion projects under the airport's Sustainable Airport Master Plan. The cities argue the FAA's environmental finding, known as a FONSI/ROD, should be scrutinized by the Ninth Circuit Court of Appeals, which has jurisdiction because the cities are located within that circuit. The petition was filed on the last allowable day of the 60-day filing window, as the original deadline fell on a Sunday.

Vashon Island Fair Skies (VIFS), a Washington nonprofit representing residents affected by aircraft noise, has filed a petition in the Ninth Circuit Court of Appeals challenging a September 2025 FAA decision approving near-term expansion projects at Seattle-Tacoma International Airport. The group argues that the FAA's environmental review failed to adequately address the significant noise impacts on Vashon and Maury Islands resulting from concentrated, low-altitude flight paths introduced under the FAA's NextGen navigation program. VIFS has been actively opposing these flight path changes since 2018, when new Performance-Based Navigation procedures began routing more aircraft directly over the islands at lower altitudes.

Jennifer Sanscrainte is an environmental and tribal law attorney at Ogden Murphy Wallace in Seattle, representing public and private clients on matters involving federal and state environmental laws such as CERCLA, the Clean Water Act, and the Clean Air Act. She specializes in site remediation, cleanup cost recovery, and permitting, and also works with Native American tribes on environmental program development. This document is a professional biography and does not contain information related to Sea-Tac Airport noise policy.

The City of Des Moines and neighboring cities have entered into an Interlocal Agreement (ILA) to coordinate their review of and response to the SeaTac Airport Master Plan (SAMP) environmental review process, covering both federal (NEPA) and state (SEPA) requirements. Originally signed in 2018 and updated in 2024, the agreement establishes how participating cities share costs, manage contracts, and jointly hire environmental and legal consultants—including attorneys who can support a legal challenge to the SAMP's environmental conclusions. The latest version, managed by the City of SeaTac and expected to run through December 31, 2028, excludes Normandy Park but otherwise continues the multi-city partnership focused on protecting community interests during the airport planning process.