TagNEPA(463)

This 1997 Final Supplemental Environmental Impact Statement evaluates the environmental effects of proposed expansion projects at Seattle-Tacoma International Airport, including construction of a new 8,500-foot third parallel runway, terminal improvements, and expanded parking and cargo facilities. The document examines potential impacts such as wetland disturbance, floodplain encroachment, stream relocation, and air, water, and noise quality effects on surrounding communities. It was prepared jointly under the National Environmental Policy Act and Washington State Environmental Policy Act to address concerns arising from continued growth in aviation activity levels.

This 1997 Final Supplemental Environmental Impact Statement (SEIS) evaluates the environmental effects of proposed expansion projects at Seattle-Tacoma International Airport, including the construction of a new 8,500-foot third parallel runway, terminal improvements, parking expansions, and cargo facilities. The document addresses a range of potential impacts such as noise, air and water quality, wetlands, and floodplains resulting from increased aviation activity. It was prepared jointly under federal (NEPA) and Washington State (SEPA) environmental review requirements by the Port of Seattle and the Federal Aviation Administration.

A handbook published by the Council on Environmental Quality providing guidance on analyzing cumulative effects under NEPA. The document covers scoping, describing affected environments, determining environmental consequences, and addressing cumulative impacts in environmental assessments.

A handbook by the Council on Environmental Quality providing framework and methods for analyzing cumulative effects in environmental assessments and impact statements under NEPA. The document outlines principles, steps, and data sources for cumulative effects analysis but does not establish new legal requirements.

JARPA (Joint Aquatic Resources Permit Application) and Section 404 application submitted by Port Of Seattle to the U.S. Army Corps of Engineers (Jack Kennedy, Seattle District Office) in December 1996, prepared by Parametrix, Inc. Requests authorization to place fill material into waters of the United States at Sea-Tac Airport associated with the Master Plan Update

Final Environmental Impact Statement (EIS) prepared jointly by the Federal Aviation Administration (FAA) Northwest Mountain Region and the Port of Seattle for the Seattle-Tacoma International Airport (Sea-Tac) Master Plan Update, dated February 1996, AR038744. Covers proposed development actions 1996-2020 including a new third parallel runway (Runway 16X/34X) up to 8,500 feet long separated 2,500 feet

A 1995 City of Burien memorandum and accompanying draft strategy paper outline concerns about the negative impacts of constructing a third runway at Seattle-Tacoma International Airport on surrounding communities, including increased noise, traffic, and neighborhood blight. The document warns that heavy truck traffic, expanded air traffic noise 'shadow,' and construction disruption could drive down property values, destabilize local businesses, and accelerate community deterioration. It calls for proactive planning and mitigation efforts, while criticizing the Environmental Impact Statement (EIS) for inadequately addressing these impacts.

The Airport Communities Coalition, representing the cities of Burien, Des Moines, Normandy Park, and Tukwila, Washington, submitted formal scoping comments to the FAA and Port of Seattle regarding the proper scope of an Environmental Impact Statement for a proposed expansion of Seattle-Tacoma International Airport. The comments address key issues including the purpose and need for the project, the role of Puget Sound Regional Council planning, and the requirement for the FAA to independently fulfill its obligations under the National Environmental Policy Act. The document also calls for the EIS to account for connected and cumulative impacts, including planned land-side facility improvements and the Part 150 Noise Mitigation Program.

In 1992, the Ninth Circuit Court of Appeals upheld the FAA's decision to change flight patterns for turbine-powered aircraft at Seattle-Tacoma International Airport without preparing a full Environmental Impact Statement. The FAA had issued a Finding of No Significant Impact based on a computer noise model using the 65 decibel day-night sound level as the threshold for significant noise impact, which the court found to be a reasonable approach. The Seattle Community Council Federation had challenged the decision, arguing that the FAA failed to adequately assess the noise effects on surrounding communities.

This 1990 Final Environmental Assessment, prepared by the FAA's Air Traffic Division in Seattle, evaluates proposed changes to arrival and departure flight routes at Seattle-Tacoma International Airport. The document was signed by Air Traffic Division Manager Temple H. Johnson, Jr. on March 27, 1990, and examines the potential environmental impacts of rerouting aircraft traffic in and out of Sea-Tac. It serves as an official federal record relevant to noise and environmental policy affecting communities around the airport.