TagSea-Tac Airport(2026)

This 2013 FAA grant agreement provides up to $3,900,000 in federal funding to the Port of Seattle for noise mitigation at Olympic Elementary School near Seattle-Tacoma International Airport, with the federal government covering 80% of allowable project costs. The agreement, offered September 9, 2013, outlines conditions including the Sponsor's responsibility to complete the project without undue delay, recover any misused federal funds, and comply with federal assurances and anti-trafficking provisions.

In September 2013, the FAA's Seattle Airports District Office issued a grant offer of $3,900,000 to the Port of Seattle for Seattle-Tacoma International Airport under AIP Project Number 3-53-0062-131-2013. The grant required acceptance by the airport sponsor no later than September 13, 2013, with proper execution of the Grant Agreement by authorized officials and the sponsor's attorney. The fully executed agreement was confirmed and transmitted on September 12, 2013.

In September 2013, the FAA's Seattle Airports District Office issued a $3,900,000 grant offer to the Port of Seattle for Seattle-Tacoma International Airport under AIP Project Number 3-53-0062-131-2013. The grant agreement was fully executed by September 12, 2013, meeting the required acceptance deadline of September 13, 2013. All environmental analysis and approval requirements were fulfilled in accordance with FAA Order 5050.4B, the Airport Environmental Handbook.

This exhibit from the Seattle-Tacoma International Airport 14 CFR Part 150 Study maps the existing 2013 baseline noise exposure contours around Sea-Tac Airport, showing DNL 65, 70, and 75 dBA noise zones across surrounding communities including SeaTac, Burien, Des Moines, and Tukwila. The DNL 65 dBA or greater contour covers approximately 5.9 square miles, encompassing an estimated 1,887 housing units and roughly 4,879 residents, along with 9 noise-sensitive facilities such as schools, churches, and hospitals. Notably, no housing units fall within the higher-impact DNL 70 dBA or above zones, though significant residential and commercial land uses exist within the broader 65 dBA contour area.

This is a proposed court order from the King County Superior Court in the case of Kebede Admasu et al. v. the Port of Seattle, in which the Port sought summary judgment against plaintiffs based on express avigation easements tied to Sea-Tac Airport. The order lists the numerous declarations and filings considered by the court, including submissions from both the Port and affected property owners. The case centers on whether recorded avigation easements legally shield the Port from noise and property-related claims brought by neighboring residents.

This February 2013 report documents the as-built conditions of a wetland mitigation project at Tyee Valley Golf Course, carried out as part of Seattle-Tacoma International Airport's 1997 Master Plan Update. Prepared by ESA for the Port of Seattle under a US Army Corps of Engineers permit, it details construction outcomes, planting plans, and habitat restoration work completed to offset environmental impacts from airport improvements. The report also outlines ongoing vegetation and hydrologic monitoring standards to ensure the mitigation site meets long-term performance goals.

This map, prepared by Landrum & Brown on January 22, 2013 as part of the 14 CFR Part 150 Study for Seattle-Tacoma International Airport, shows projected future (2021) noise exposure contours around Sea-Tac Airport at DNL 65, 70, and 75 dBA levels. The contours extend across surrounding communities including SeaTac, Burien, Des Moines, Tukwila, and portions of Renton and Kent, with sensitive land uses such as schools, churches, hospitals, and residential areas identified within the noise impact zones. The study was conducted to inform noise compatibility planning and policy decisions aimed at reducing aviation noise impacts on affected neighborhoods.