TagFONSI(16)

The cities of SeaTac, Burien, Des Moines, and Normandy Park are jointly challenging the FAA's environmental review of the Port of Seattle's Sustainable Airport Master Plan (SAMP), arguing that a September 2025 Finding of No Significant Impact (FONSI) failed to adequately address their concerns about airport expansion impacts. The SeaTac City Council is being asked to approve a budget amendment of up to $350,000, authorize an Interlocal Agreement among the four cities, and hire two law firms to advocate for airport-affected communities. The action reflects ongoing efforts by neighboring cities to ensure environmental impacts of SEA airport growth are properly evaluated under both federal (NEPA) and state (SEPA) law.

The City of SeaTac is authorizing its City Manager to join an updated cost-sharing agreement with Burien and Des Moines to hire outside legal counsel in response to the FAA's September 2025 environmental review of the Port of Seattle's Sustainable Airport Master Plan (SAMP). The cities are concerned that their comments about the airport's potential negative impacts were not adequately addressed in the FAA's Final Environmental Assessment and Finding of No Significant Impact. To fund the legal effort, SeaTac is amending its 2025–2026 budget by adding $350,000 in expenditures and $253,000 in shared revenues to its Port ILA Fund.

The City of SeaTac, Washington has engaged the law firm Leech Tishman Nelson Hardiman to provide legal counsel regarding the Port of Seattle's Sustainable Airport Master Plan (SAMP), specifically in connection with the forthcoming Final Environmental Assessment and Finding of No Significant Impact (FONSI). The firm will advise the City, prepare legal memoranda, and file a Petition for Review with a federal appeals court challenging the FAA's Record of Decision once it is published in late 2025. The engagement is capped at $300,000, with an initial retainer of $10,000, and hourly rates ranging from $300–$540 per hour.

This document outlines the forty most frequently asked questions about the National Environmental Policy Act (NEPA), covering topics such as how agencies evaluate a range of alternatives, the role of environmental impact statements (EIS), and the use of environmental assessments (EA). It provides plain-language guidance on requirements like the no-action alternative, mitigation measures, public comment periods, and records of decision. While not specific to airport noise, it serves as a foundational reference for understanding the federal environmental review process that governs major infrastructure projects such as those at Sea-Tac Airport.

A federal appeals court denied a challenge by Oregon residents and an aviation watchdog group against a new runway project at Hillsboro Airport near Portland, Oregon. The court found that the Federal Aviation Administration acted properly in concluding the project would have no significant environmental impact, including only a minimal effect on air traffic and air quality. This case, a follow-up to a 2011 ruling, may be relevant to discussions of how environmental reviews are conducted for airport expansion projects in the Pacific Northwest.

In November 2012, the Federal Aviation Administration (FAA) issued a Finding of No Significant Impact (FONSI) and Record of Decision (ROD) approving new satellite-based navigation procedures at Seattle-Tacoma International Airport (Sea-Tac) under the 'Greener Skies over Seattle' initiative. The new procedures, developed with Alaska Airlines, Boeing, and the Port of Seattle, use advanced RNAV/RNP technology to guide arriving aircraft along more precise, optimized descent paths, reducing fuel burn and environmental impact. The FAA determined that these airspace changes would not result in significant environmental harm or any physical airport development.