October 8, 2001August 2, 2026

Stipulation and order: Airport Communities Coalition v. Department of Ecology and Port Of Seattle (PCHB Nos. 01-133, 01-150, 01-160)

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A stipulation and order filed before the Pollution Control Hearings Board for the State of Washington involving the Airport Communities Coalition, the Department of Ecology, and the Port of Seattle regarding Clean Water Act Section 401 certifications. The document records the transfer of pleadings and supporting documents from earlier PCHB case numbers to the new appeal number (01-160) following the Department of Ecology’s rescission and reissuance of a 401 Certification. The parties jointly request dismissal of PCHB Case Nos. 01-150 and 01-133.

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As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.

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