TagSea-Tac Airport(1855)

This 1989 draft Environmental Assessment, prepared by the FAA's Air Traffic Division, evaluates proposed changes to arrival and departure flight routes at Seattle-Tacoma International Airport. The changes aimed to reduce air traffic congestion and improve airspace efficiency, particularly during peak demand periods when south-arrival capacity (42 aircraft/hour) lagged significantly behind north-arrival capacity (56 aircraft/hour). The inefficiency was linked to a requirement routing turbojet aircraft through Elliott Bay, a legacy of noise abatement agreements with local governments and the Port of Seattle dating back to 1970.

This 1989 FAA draft Environmental Assessment examines proposed changes to arrival and departure flight routes at Seattle-Tacoma International Airport, aimed at reducing air traffic congestion and improving airspace efficiency. The document identifies a key inefficiency: during good weather and peak demand, south-landing capacity (42 aircraft/hour) was significantly lower than north-landing capacity (56 aircraft/hour), largely due to a requirement routing turbojet aircraft through Elliott Bay. The assessment traces the issue back to noise abatement procedures established since 1970 that prioritized limiting jet overflights in certain Seattle metropolitan areas over operational efficiency.

A May 1989 environmental report from Hart Crowser, Inc. details the installation of three groundwater monitoring wells (WY-1, WY-2, WY-3) near underground fuel storage tanks at the Weyerhaeuser Aviation facility at Sea-Tac International Airport. Soil samples collected during drilling showed no detectable petroleum contamination, and no groundwater was encountered at the site. The report was prepared to help Weyerhaeuser comply with the Port of Seattle's NPDES permit requirements and to assess subsurface soil conditions around the tanks.

In April 1989, the Port of Seattle Commission passed Resolution No. 3042 authorizing the Executive Director to enter into an agreement with the Puget Sound Council of Governments (PSCOG) to develop a long-term regional air carrier system plan for the Puget Sound area. The resolution was prompted by a recognized need for additional air carrier capacity beyond the year 2000, following a 1988 Airspace Study Update of Seattle-Tacoma International Airport. The agreement allowed the Port to seek federal FAA funding and hire consultants to study long-term aviation capacity options for the region.

Resolution No. 3032, adopted by the Port of Seattle Commission on October 25, 1988, amends an earlier resolution (No. 3016) concerning noise management at Seattle-Tacoma International Airport. The key change gives the negotiating committee—known as the Joint Committee on Aircraft Overflights—the freedom to select their own neutral convener (mediator) from at least three interviewed candidates, rather than being restricted as under the previous rules. The chosen convener would be retained for up to four months to organize a mediation process, ensure all relevant parties are represented, and report regularly to the Port Commission on progress.

In September 1988, the Port of Seattle Port Commission passed Resolution No. 3035, authorizing the acceptance of a Federal Aviation Administration grant (AIP Project No. 3-53-0062-19) to fund development work at Sea-Tac International Airport. The project included construction of Taxiway A-3/4, installation of an electrical duct bank and broadramp centerline lights, and widening of Taxiways B-2 and A-1. The resolution directed the Executive Director to sign the grant agreement on the Port's behalf, provided it was reviewed and approved by the Aviation Division and Legal Department.

This archival box (Historical Box No. 1324) contains Airport Litigation Documents related to Sea-Tac Airport noise issues, spanning 1988 to 1996. The materials include correspondence, budget estimates, press releases, and documents submitted to an Expert Arbitration Panel addressing noise reduction and demand/system management. Records are held at the Washington State Archives and were prepared by the Port of Seattle's Administration office.

This January 1987 edition of the Sea-Tac Forum newsletter reports on the Port of Seattle's ongoing Noise Remedy Program, which had already soundproofed 14 homes near Sea-Tac Airport and provided selling assistance to homeowners in high-noise areas. The program, part of a broader 15-year plan expected to benefit thousands of households, was drawing interest from major airports across the country seeking to launch similar initiatives. The newsletter also includes a community calendar of January 1987 meetings related to airport noise, land use, and flight track planning.