TagThird Runway(1067)

A 1993 letter from the Port of Seattle to a Des Moines resident explains that airline deicing at Sea-Tac Airport uses only FAA-approved ethylene or propylene glycol, and that wastewater from deicing drains to the airport's treatment system before being discharged to Puget Sound — not to Miller or Des Moines Creeks. The Port acknowledged its treatment plant was not designed to handle glycols and was evaluating upgrades. A follow-up 1996 letter challenges a contradictory statement in the airport's Final Environmental Impact Statement, which claimed most deicing fluids were contained and treated by the Port's Industrial Wastewater System.

Resolution A-93-03 adopted by the Puget Sound Regional Council General Assembly on April 29, 1993, amending the 1988 Interim Regional Airport System Plan (RASP) for long-term commercial air transportation capacity needs of the central Puget Sound region (King, Kitsap, Pierce, Snohomish counties). Establishes as preferred alternative a major supplemental airport in the four-county area plus

In April 1993, the Puget Sound Regional Council adopted Resolution A-93-03, amending its Regional Airport System Plan to address long-term commercial air transportation needs for the central Puget Sound region. The resolution established a dual-track strategy of pursuing both a major supplemental airport within the four-county area and a third runway at Sea-Tac Airport, with the third runway to be authorized by April 1, 1996 unless a viable supplemental site could eliminate that need. Key conditions attached to the third runway approval included independent evaluation of demand management programs and measurable noise reduction performance objectives, while small supplemental airports such as Paine Field were eliminated as preferred alternatives.

In April 1993, the Puget Sound Regional Council adopted Resolution A-93-03, amending its 1988 Regional Airport System Plan to address long-term commercial air transportation needs in the central Puget Sound region. The resolution established a preferred strategy of pursuing both a major supplemental airport within the four-county area and a third runway at Sea-Tac Airport, with the third runway to be authorized by April 1, 1996 subject to conditions including noise reduction performance objectives and demand management efforts. The resolution also eliminated small supplemental airports such as Paine Field as a preferred alternative and called for site-specific environmental impact studies on the proposed Sea-Tac third runway.

A 1993 confidential legal memorandum from law firm Cutler & Stanfield to the Airport Communities Coalition (ACC) outlines strategies for opposing the planned third runway expansion at Seattle-Tacoma International Airport. The memo recommends that the ACC Cities prioritize preventing new runway construction as their primary goal, with secondary goals focused on reducing noise impacts, limiting night flights, and improving mitigation for affected residents. The overarching strategy was to build enough political and legal leverage so that airport expansion decisions could not practically move forward without the ACC Cities' participation.

This April 1993 confidential legal report, prepared by law firm Cutler & Stanfield for the Airport Communities Coalition, examines the legal issues surrounding the proposed expansion of Seattle-Tacoma International Airport, including the construction of a third runway. It reviews the powers and responsibilities of key governmental entities — including the FAA, the Port of Seattle, the Puget Sound Regional Council, and surrounding cities — in relation to airport planning, noise abatement, and environmental impacts. The report also assesses geographic and environmental conditions in the SEA area, covering noise-sensitive locations, wetlands, air quality, and other factors relevant to community opposition to the expansion.

The Regional Commission on Airport Affairs (RCAA) was a coalition of cities and citizen groups in the Puget Sound region that opposed the proposed third dependent runway at Seattle-Tacoma International Airport in the early 1990s. The organization compiled expert research and white papers covering noise impacts, public health effects, environmental and social consequences, and economic costs associated with airport expansion. Their goal was to identify financially feasible and environmentally responsible alternatives to meet the region's air capacity needs without further expanding Sea-Tac.