TagEnvironmental Impact Statement(400)

A Normandy Park resident and aerospace engineering manager submitted detailed comments in November 1996 criticizing a draft impact study related to Sea-Tac Airport's proposed Third Runway, arguing that the analysis underestimated real estate value losses, air pollution risks, and traffic disruptions caused by the project. The letter contends that home values in Normandy Park stagnated or declined after the Third Runway was publicly announced, and that any valid property value assessment must use baseline figures from before negative publicity began. The author also challenges the study's air quality modeling assumptions and traffic analysis, warning that the Port of Seattle would selectively cite favorable findings while ignoring methodological flaws.

This 1996 Memorandum of Agreement establishes a 24-month air quality monitoring program near Seattle-Tacoma International Airport, involving the Port of Seattle, FAA, EPA, Washington State Department of Ecology, and the Puget Sound Air Pollution Control Agency. The program, funded at $195,000, focuses on measuring carbon monoxide, nitrogen oxides, and aircraft fuel particle residue to establish baseline air quality data and evaluate potential pollution impacts from planned airport expansion projects. The Port agreed not to proceed with expansion elements projected to cause carbon monoxide standard violations until monitoring is complete and, if necessary, mitigation measures are identified.

In August 1996, community groups CASE and RCAA formally appealed the Port of Seattle's Resolution No. 3212, which approved construction of a third runway at Seattle-Tacoma International Airport. The appeal argued that newer navigation technologies such as Localizer Directional Aid (LDA) and GPS, combined with demand management strategies, could provide equivalent airport capacity at far lower cost and with less environmental harm. The groups requested a Supplemental Environmental Impact Statement to evaluate these technology-based alternatives and reconsider the third runway decision.

Resolution A-96-02 adopted by the Puget Sound Regional Council (PSRC) General Assembly on July 11, 1996, amending the 1995 Metropolitan Transportation Plan (MTP) and Regional Transportation Plan (RTP) to include plans for a third runway at Seattle-Tacoma International Airport with additional noise reduction measures. References Resolution A-93-03, Expert Arbitration Panel on Demand/System Management and Noise,

Appendix E contains public comments submitted in response to the Final Environmental Impact Statement (FEIS) for the Seattle-Tacoma International Airport Master Plan Update. Commenters include the Highline Water District, the Washington State Department of Ecology, the U.S. Public Health Service, and the Washington State Department of Natural Resources, raising concerns about groundwater contamination, the handling of aircraft de-icing glycols, storm water runoff, and surface mining permit requirements for borrow sites on Port of Seattle property. The agencies generally called for stronger mitigation measures and clearer answers to environmental questions before approving the proposed airport expansion.

This 1996 Final Environmental Impact Statement, prepared jointly by the FAA and the Port of Seattle, evaluates proposed expansion plans at Seattle-Tacoma International Airport through the year 2020, including the construction of a third parallel runway up to 8,500 feet long, a new north terminal, and various landside improvements. The document assesses environmental consequences across 24 categories—including noise, air quality, water quality, and human health—for a range of alternatives, from building a new regional airport to a no-build option. Ultimately, the Port of Seattle selected Alternative 3 as the preferred option, concluding that Sea-Tac was the only feasible site to address the region's growing air transportation needs.

This 1996 Final Environmental Impact Statement, prepared by the Port of Seattle and the Federal Aviation Administration, evaluates the environmental effects of proposed development projects at Seattle-Tacoma International Airport, including the construction of a third parallel runway, terminal expansions, and parking improvements planned for completion between 1996 and 2020. The document assesses a range of impacts such as noise, air quality, wetlands, and floodplains affecting surrounding communities. Appendix C specifically addresses noise impacts resulting from the proposed airport expansion alternatives.

This 1996 Final Environmental Impact Statement, prepared jointly by the FAA and the Port of Seattle, evaluates the environmental effects of proposed expansion and improvement projects at Seattle-Tacoma International Airport, including the construction of a third parallel runway, terminal upgrades, and expanded parking and cargo facilities. The document examines a range of impacts such as wetland disturbance, floodplain encroachment, stream relocation, and noise, water, and air quality effects on surrounding communities. The proposed improvements were planned for completion between 1996 and 2020, with early phases prioritizing the new runway and existing terminal and access enhancements.

This 1996 Final Environmental Impact Statement, prepared by the Port of Seattle and the Federal Aviation Administration, evaluates proposed improvements at Seattle-Tacoma International Airport through the year 2020, including the construction of a third parallel runway, terminal expansions, and parking upgrades. The document assesses a range of environmental impacts such as noise, air and water quality, wetlands, and floodplain encroachment resulting from the planned development. It was prepared in compliance with both the National Environmental Policy Act and Washington State Environmental Policy Act.