TagEnvironmental Impact Statement(328)

This document tabulates public comments received during a permit review process, likely related to a construction or development project near Sea-Tac Airport. A total of 509 individuals opposed the permit, while 101 supported it, with additional concerns raised across topics including MSE wall integrity, wetlands, hydrology, air and noise pollution, and airport/aircraft safety. The index identifies specific commenters — ranging from environmental consultants to aviation industry groups — and maps each comment to a designated paragraph number for formal review response.

This document analyzes the environmental impacts of construction projects at a north airfield area on wetlands and waterways in the Miller Creek Basin. It details how filling approximately 2.75 acres of wetlands and 980 linear feet of Miller Creek will affect water quality, hydrology, fish habitat, wildlife, and plant communities. It also describes a compensatory mitigation plan at the nearby Vacca Farm site, where Miller Creek will be relocated and wetlands restored to offset the project's ecological losses.

This document summarizes the environmental wetland impacts associated with airport expansion projects near Sea-Tac Airport, detailing acreage affected across four creek basins — Miller Creek, Walker Creek, Des Moines Creek, and Green River. It breaks down impacts by wetland vegetation type (forested, shrub, emergent, and open water) and hydrological classification (depressional, riverine, and slope), with total impacts ranging from 4% of the Walker Creek project area to 100% of the Green River area. The tables also distinguish between temporary and permanent wetland impacts as determined by the U.S. Army Corps of Engineers, covering features such as the Third Runway and Runway Safety Area extensions.

This map document illustrates the planned Third Runway expansion at Seattle-Tacoma International Airport, showing the proposed runway location, construction staging area, and fill 'borrow' areas in the Sea-Tac region. The map covers surrounding communities including Burien, Normandy Park, and Des Moines, and highlights nearby waterways such as Des Moines Creek, Miller Creek, and Walker Creek that could be affected by construction. Based on the 1996 Port of Seattle EIS Sea-Tac Airport Master Plan and 1997–1998 King County Wetlands Maps, the document provides geographic context for environmental and land-use planning related to the runway project.

228-78-R

This draft report from the City of Burien analyzes environmental impacts of proposed updates to the Seattle-Tacoma Airport Master Plan, covering noise and vibration, air quality, water resources, and visual aesthetics. The study found that while the airport's Environmental Impact Statement used accepted noise modeling methods, several gaps remain — including the need for better data on aircraft noise levels, surface traffic noise, and vibration effects on nearby residents and buildings. Mitigation measures to address these issues will be developed in a separate follow-up report.

A map showing potential mitigation sites and existing Port of Seattle habitat sites in the greater Seattle area, including Terminal 25, Terminal 117, and the Auburn Site. The map covers cities including Seattle, Burien, Tukwila, SeaTac, Des Moines, Federal Way, Kent, Renton, and Auburn. Sites are categorized by land use type including storage, vacant, and

The Burien Airport Committee held a meeting on March 15, 2022, covering topics including a Port of Seattle presentation on city ordinances related to aviation issues, an update on the Environmental Impact Statement for Ambaum Boulevard Park Plans, and a review of the committee's draft workplan. Draft minutes from the February 15, 2022 meeting were also included, noting that the committee discussed Burien Municipal Code chapter 15.12 on Aircraft Noise Reduction and planned future agenda items. The committee operates as an advisory body focused on monitoring and responding to the impacts of Sea-Tac Airport on the City of Burien.

The Burien Airport Committee held meetings in December 2021 and February 2022 to discuss issues related to Sea-Tac Airport, including updates on the Sustainable Airport Master Plan (SAMP) comment period, a University of Washington study on ultrafine particle pollution affecting nearby schools, and a draft committee workplan. Agenda items included potential presentations on aviation-related city codes, an Environmental Impact Statement for a local park, and federal legislative updates. The committee also discussed briefing the full City Council on its activities at a March 2022 study session.