A consulting team addresses two community concerns about Seattle-Tacoma International Airport: the lack of a direct NEPA environmental review covering noise impact growth between 2012 and 2018, and questions about how the airport's third runway is being used. The document explains that while current NEPA and Part 150 processes will capture existing noise conditions, they will not specifically compare 2012 versus 2018 impacts, and that federally funded runways like the third runway must be made available whenever air traffic control deems it necessary. The consultants propose reviewing historical Part 150 studies, past NEPA documents, and third-runway records to assess noise impacts on surrounding communities, while also supporting clients in engaging the Port, FAA, and airlines through the StART committee and other channels.Open full document
Notes
ABCx2 (now Vianair) consulting team’s response addressing two areas of client concern: growth in airport impacts between 2012-2018 not addressed through NEPA review, and SEA 3rd runway use. Explains NEPA review processes, Part 150 studies, and proposes additional work to review historical documentation and engage with Port, FAA, and airlines.