October 26, 2000August 2, 2026

Exhibit 89: FW: 3rd Runway Notes and Next Meetings — Ecology Internal Comments on 401 Certification Issues

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Exhibit 89 (AR 017784-017785). Email chain forwarded by Raymond Hellwig (Ecology) to Ann Kenny on October 26, 2000, containing internal comments by Tom Luster (Ecology) on draft 10/20/2000 meeting notes for the Sea-Tac Airport third runway 401/404 review. Luster raises concerns about: NPDES major modification and stormwater plan for SR-509 interchange; South Access/Tyee Pond spill containment impacts on wetlands and 401 conditions; Des Moines Creek flow augmentation condition language and fill placement restrictions; temporary construction in SASA footprint above Des Moines Creek; Lagoon #3 direct and indirect hydrologic impacts on Wetland #28; and 401 relationship with Agreed Order and Governor’s certification letter. Rachel McCrea (Floyd & Snider) original message schedules meetings at Ecology NWRO on 10/27 and 10/31 regarding SMP results and base flow update.

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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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