Suomi FAA Final 2020-03-03

We request that the Federal Aviation Administration (FAA) conduct a comprehensive cumulative impact1 assessment as part of an Environmental Impact Statement (EIS) for any future development of capacity at Sea-Tac Airport, including buildout of the Sustainable Airport Master Plan (SAMP). Growth in operations at Sea-Tac Airport has exceeded most other airports in the nation and all projections developed by the Port of Seattle in recent years. In just four years, (2014 – 2018) operations have grown by nearly 30%2, an increase equivalent to another medium sized airport. This growth is resulting in significant impacts to the quality of life in surrounding communities, including noise and air quality degradation, affecting the health of residents. This growth has been enabled through numerous actions taken by the FAA and Port of Seattle, adding gates and other capacity enhancements resulting in more operations. These actions have been undertaken and analyzed incrementally over the years. While cumulatively, these actions have resulted in more planes, more noise, and more community impacts, no cumulative impact analysis, as called for under the National Environmental Policy Act (NEPA) has been conducted since 1997 (Final Supplemental EIS on the third runway). “Cumulative impact is the impact on the environment which results from the incremental impact of the action when added to other past, present, and reasonably foreseeable future actions regardless of what agency (Federal or non-Federal) or person undertakes such other actions. Cumulative impacts can result from individually minor but collectively significant actions taking place over a period of time.”…
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