TagSea-Tac Master Plan Update 1996(6)

The Regional Commission on Airport Affairs (RCAA) submitted formal scoping comments on the proposed Sea-Tac Airport Master Plan Update, which includes the addition of a third runway, calling for the Environmental Impact Statement to comply fully with both federal NEPA and state SEPA requirements. The RCAA emphasized that the EIS must be a comprehensive, nonpartisan document that is accessible to ordinary citizens and public officials, complete with proper citations, consistent terminology, indexed appendices, and clearly sourced maps and data. The comments also urged that all environmental impacts be analyzed across multiple time horizons, including the full useful life of the proposed runway, and that all study documents be made freely available to the public throughout King and Pierce Counties.

This 2009 report summarizes air quality monitoring conducted near Seattle-Tacoma International Airport between 1996 and 2002, covering carbon monoxide, nitrogen dioxide, particulate matter, and air toxics. Monitoring found that levels of all measured pollutants remained below federal National Ambient Air Quality Standards (NAAQS), though chromium concentrations at the Sea-Tac North site exceeded EPA's lifetime risk-based threshold. The studies were prompted by a Memorandum of Agreement among the Port of Seattle, FAA, and environmental agencies following an Environmental Impact Statement for proposed airport expansion.

This catalog lists documents received in 1996 related to Seattle-Tacoma International Airport planning and policy, including environmental impact statements, noise arbitration hearing transcripts, air quality studies, and budget documents. Key sources include the Port of Seattle, the FAA, the Airport Communities Coalition (ACC), and various consulting firms, covering topics such as the proposed Sea-Tac Master Plan Update, a third runway, groundwater studies, and community noise mitigation. The collection reflects ongoing disputes between the Port of Seattle and surrounding communities over airport expansion impacts during the mid-1990s.

This 1996 document outlines the Port of Seattle's wetland impact and mitigation plan associated with the Seattle-Tacoma International Airport Master Plan Update. It includes vicinity maps showing the airport's location in King County, Washington, and identifies numerous wetland sites affected by planned airport improvements. Detailed tables classify each impacted wetland by type—forested, shrub-scrub, or emergent—and quantify the acreage disturbed across sections of Townships 22N and 23N, Range 4E.