September 11, 2000August 2, 2026

EXH AR017276: Clean Fill Criteria Language for the 401 Water Quality Certification on the Sea-Tac Third Runway

Notes

Email from Peter Kmet to Kevin Fitzpatrick, Washington State Department of Ecology (Ecology), dated September 11, 2000, providing comments on proposed Clean Fill Criteria language for the Section 401 Water Quality Certification for the Sea-Tac Airport Third Runway project. Kmet comments on sections E6, E7, E7a, E7b, E7c regarding Port Of Seattle borrow sites, fill material contamination, MTCA Method A and Method B soil cleanup levels (WAC 173-340-740), TPH and Priority Pollutants metals analysis, environmental site assessment, Confirmed & Suspected Contaminated Sites Report, EPA databases, MTCA cleanup standards, and environmental professional requirements. Document is marked ‘Deliberative Document Currently Exempt From Public Disclosure.’ AR017276–AR017278.

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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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