December 27, 2001August 2, 2026

Exhibit 2049: Port Of Seattle Construction Stormwater Monitoring Report Letter — STIA Water Quality Certification No. 1996-4-02325

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Letter dated December 27, 2001 from Keith R. Smith, Water Resources Manager at Port Of Seattle Seattle-Tacoma International Airport, to Ms. Ann Kenny at Washington State Department of Ecology (Bellevue, WA 98088-5452), transmitting construction stormwater monitoring reports for September, October, and November 2001 under Section K.6 of Water Quality Certification No. 1996-4-02325 (Amended-1) and NPDES permit. Includes Walker Creek Watershed construction site stormwater monitoring data tables (AR 031461–031463) with turbidity, pH, sheen measurements at multiple stations including Wetland 44a, Wetland 43, SR509, Gilliam Creek, 178th St, 12th Ave S, Lowe Blvd, 168th Ave, and S. 168th St. Tom Hubbard (206/433-7135) identified as future responsible party for assembling reports; separate future reports to Ed Abbassi for NPDES monitoring.

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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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