TagSea-Tac Airport(1855)

This document contains scoping comments submitted to the Port of Seattle regarding the Sustainable Airport Master Plan (SAMP) environmental review process, compiled by the Quiet Skies Coalition. Community members raised concerns about the lack of long-term human health and environmental impact studies related to aircraft noise and emissions, questioning why the Port had not studied the effects of a four-year increase of 97,000 additional annual flights. The comments request comprehensive assessments covering neighborhoods such as Des Moines, Burien, Tukwila, and Normandy Park, and call for the Port to include worldwide scientific studies on the health effects of aircraft noise and pollution in its environmental review.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes constrained operating growth scenarios (COGS), FAA approval documentation, and airside modeling data used to support environmental review planning. The forecast serves as a foundational planning tool for understanding future airport capacity and operational assumptions.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes constrained operating growth scenarios, FAA-approved forecast data, and airside simulation modeling documentation used to support environmental review planning at Sea-Tac.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes Constrained Operating Growth Scenarios (COGS), FAA approval of the forecast update, and airside modeling documentation used to support environmental review. The forecast and operational assumptions outlined in this document serve as the foundation for planning future airport capacity and assessing potential noise and environmental impacts.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, provides an updated aviation activity forecast for Seattle-Tacoma International Airport as part of a FAA Part 150 noise study. It outlines forecast and operational assumptions—including projected aircraft types and flight activity levels—that were used to model future noise conditions around Sea-Tac. The report is accompanied by operational data appendices supporting the airport's long-term noise compatibility planning efforts.

Table I summarizing analytical results for PFAS (per and polyfluoroalkyl substances) in groundwater at Sea-Tac Airport, prepared by Haley & Aldrich, Inc. in August 2023. Groundwater monitoring wells sampled include LAI-4, MW-01, MW-02, MW-03, T-111-MW-1, TF-MW-01 through TF-MW-08-D, DMC Augmentation Well, and Tyee Well, with sample dates ranging from March 2019 to April 2023. Analytes

This document appears to be an organizational roster for CASE (Citizens Against Sea-Tac Expansion), listing officer positions and contact information including a Chair (acting), Vice Chair, Treasurer, Secretary, and members of Technical and Research Committees focused on noise and environmental health concerns. The document references a goal of addressing airport expansion alternatives and includes phone numbers for key members such as Loretta Bower (Treasurer) and Joan Bell (Secretary). It likely dates from the early period of community organizing around Sea-Tac Airport expansion opposition.