Notes

Memorandum dated July 1, 1998 from Ken Ludwa (Parametrix, Inc.) to Paul Fendt, describing results of a Reasonable Potential Analysis (RPA) for the Sea-Tac International Airport (STIA) Third Runway area. Analysis used outfall 005 (SDS-3) stormwater runoff data (1994-98), with two 1996 deicing sampling events removed. Criteria established for Miller Creek (hardness 23 ppm) and Des Moines Creek (hardness 35.6 ppm) per STIA 1998 NPDES Permit Fact Sheet. Parameters analyzed include fecal coliform (CFU/100mL), turbidity (NTU), copper, lead, and zinc. Copper concentrations after BMP treatment (bioswales, sand filters, wet ponds/vaults) exceeded water quality criteria. Meeting attendees included Lisa Zinner (Ecology), Lori Terry (Preston Gates and Ellis), Tom Hubbard (POS), John Rogers (CH2M Hill), Bill Taylor (Taylor and Assoc.), and Jim Good.

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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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