TagSea-Tac Airport(661)

This document outlines the Runway Use Agreement between the FAA and the Port of Seattle at Seattle-Tacoma International Airport (Sea-Tac), effective December 6, 2010. It establishes preferred runway assignments for arrivals and departures under various weather and traffic conditions, while making clear that safety and air traffic management always take priority. The agreement does not change existing FAA practices but aims to provide consistency and transparency for the public regarding how runways are used.

This document is Appendix N of the Seattle-Tacoma International Airport Part 150 Noise Compatibility Study Update, compiled by Landrum & Brown in October 2013. It contains the FAA's official approval, dated August 19, 2010, of the aviation activity forecast submitted by Sea-Tac Airport in July 2010. The FAA determined that the forecast provided adequate justification for total aircraft operations and authorized its use in the airport's Noise Compatibility Plan Update.

This engineering study describes the design and construction of a 46-meter (150-foot) tall mechanically stabilized earth (MSE) retaining wall built along the western edge of Seattle-Tacoma International Airport's third runway embankment, believed to be the tallest such wall in the western hemisphere at the time. The wall was necessary to raise the ground level by up to 50 meters while avoiding encroachment into nearby wetlands and creeks. Monitoring of the wall during and after construction confirmed it performed safely and largely as predicted.

This 2009 report summarizes air quality monitoring studies conducted near Seattle-Tacoma International Airport between 1996 and 2002, following concerns raised during the airport's expansion planning. Measurements of carbon monoxide, nitrogen dioxide, particulate matter, and air toxics were taken at multiple sites around the airport, and none of the pollutants exceeded federal air quality standards. While some elevated levels of metals like chromium were detected at the Sea-Tac monitoring site, overall cancer risk from air toxics was lower than the regional average for the Seattle area.

The Mayor's Roundtable Common Actions and Priorities outlines a cooperative framework between Sea-Tac Airport and four neighboring cities — Burien, Des Moines, Normandy Park, and SeaTac — aimed at ensuring a sustainable future for both the airport and surrounding communities. The document sets out four key actions covering regional transportation connectivity, stormwater impacts, economic development, and mitigation of local environmental and quality-of-life impacts from airport growth. It emphasizes avoiding litigation by requiring the Port of Seattle, FAA, and neighboring cities to work together on policy changes that protect residents, wildlife, and local businesses.

The Federal Aviation Administration approved a total grant payment of $4,935,000 to the Port of Seattle for AIP Project Number 3-53-0062-77, covering acoustical insulation work at Seattle-Tacoma International Airport. Out of $6,476,538.99 in claimed costs, $6,168,750.00 was deemed allowable after disallowing $307,788.99, with the federal share set at 80%. The Port of Seattle submitted closeout documentation in March 2006, though a Circular A-133 audit by Deloitte & Touche and final acoustic test results for Seawind Condominiums were still pending completion at the time of closure.