TagEnvironmental Impact Statement(328)

The City of Tukwila submitted formal comments on December 13, 2024, objecting to SeaTac Airport's Sustainable Airport Master Plan Draft Environmental Assessment (SAMP Draft EA), arguing that the study area is too narrow, covering only 3,692 acres, and fails to account for broader impacts on surrounding communities including increased traffic, air quality degradation, and noise under flight paths. The city contends that proposed mitigation measures are inadequate and that the assessment ignores equity and social justice concerns affecting the low-income, diverse communities near the airport. Tukwila is calling for a full Environmental Impact Statement with an expanded General Study Area that includes the entire city and broader South King County region.

The City of Burien submitted formal comments in December 2024 arguing that the Port of Seattle's Sustainable Airport Master Plan (SAMP) for Sea-Tac International Airport contains serious flaws, including an unrealistically narrow study boundary that ignores noise and air pollution impacts on surrounding neighborhoods. The city contends that the plan fails to account for cumulative impacts such as the SR-509 highway extension, the 2008 opening of the airport's third runway, and emerging science on health risks from ultrafine particles and aircraft noise. Burien is calling for a full Environmental Impact Statement rather than the less rigorous Environmental Assessment currently underway.

A federal appeals court reviewed a challenge by conservation groups to an Air Tour Management Plan regulating tourist flights over four national parks near San Francisco, including Golden Gate National Recreation Area and Point Reyes National Seashore. The Federal Aviation Administration and National Park Service had jointly issued the plan under the National Parks Air Tour Management Act of 2000, determining that no full environmental review was required because the plan would cause minimal additional environmental impact. The court considered whether the agencies properly bypassed environmental analysis under the National Environmental Policy Act.

Final Environmental Impact Statement (Final EIS) for the Burien 2044 Comprehensive Plan Update, dated October 18, 2024, prepared by the City of Burien. Evaluates three alternatives: Alternative 1 (No Action), Alternative 2 (Neighborhood Centers), and Alternative 3 (Greater Downtown). Addresses 20-year growth targets for housing and jobs, new future land use map, zoning districts, Transportation

This document is the References section of the Environmental Assessment for Seattle-Tacoma International Airport's Sustainable Airport Master Plan Near-Term Projects, prepared by Landrum & Brown in October 2024. It lists the sources cited across four chapters, including federal regulations, FAA advisory circulars, technical memoranda, city and county planning documents, and environmental studies used to evaluate the airport's proposed near-term development projects. Key references cover topics such as air quality, greenhouse gas emissions, stormwater management, facility requirements, and land use planning for the communities surrounding Sea-Tac Airport.

This October 2024 report from the Washington State Department of Ecology examines options for collecting and disposing of Aqueous Film-Forming Foam (AFFF), a firefighting chemical that contains harmful PFAS compounds. The Final Programmatic Environmental Impact Statement evaluates the potential environmental effects of different collection and disposal methods for this toxic foam, which has historically been used at airports and military facilities. It is published by Ecology's Hazardous Waste and Toxics Reduction Program and is unrelated to airport noise policy.

This technical report analyzes existing surface transportation and traffic conditions around Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP) Near-Term Projects Environmental Review. It examines 108 intersections — including signalized, stop-controlled, and uncontrolled locations — along key travel routes connecting the airport to surrounding communities, focusing on weekday PM peak-hour traffic volumes. The study also includes freeway analysis of SR 518 and I-5 ramps and segments at the request of WSDOT.

The Federal Aviation Administration (FAA) issued a Negative Determination in July 2024, concluding that planned near-term construction and equipment relocation projects at Seattle-Tacoma International Airport (SEA) are not reasonably likely to cause effects on Washington State's coastal zone. The 31 Near-Term Projects, which include taxiway extensions, blast pad expansions, and relocation of navigational aids, are part of the airport's Sustainable Airport Master Plan and are scheduled to begin construction in 2026. The FAA requested written concurrence from the Washington State Department of Ecology, while the Port of Seattle remains responsible for separate consistency certification for any projects requiring Clean Water Act permits.