November 1, 2001August 2, 2026

AR 026637: Trickle Down Effect — Metal Roofing Materials Contribute to Elevated Zinc Concentrations in Sea-Tac Airport Stormwater Discharges

Notes

Article by Scott A. Tobiason and Linda R. J. Logan published in ‘Industrial Wastewater’ magazine (WEF publication), November 2001, about whole effluent toxicity (WET) testing and source tracing at Seattle-Tacoma International Airport (STIA), operated by Port Of Seattle. Documents that galvanized metal roofing on cargo buildings contributed to elevated zinc concentrations in stormwater discharges from outfall SDN1, with source tracing also examining SDE4, SDS3, and SDN4. NPDES permit stormwater monitoring involved Daphnia pulex and Pimephales promelas bioassays, metals chelation, and EPA Method 1669 trace-metal sampling. Receiving waters include Miller Creek and Des Moines Creek, critical Coho salmon and cutthroat trout spawning habitat draining to Puget Sound. AR 026637 exhibit identifier.

Sidebar On/Off

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.

continue...

V V

Notes

Message