March 22, 2001August 2, 2026

Exhibit 192: Handwritten Meeting Notes on Stormwater Ponds D, F, and G — Wetland Hydrology and Drainage

Notes

Handwritten meeting notes dated 3-22-01 (AR 018495–018497, Exhibit 192) from a meeting involving Kelly Whiting, Katie Walters, and others (SKW MIG at WLRD). Notes cover Pond D (discharge not modelled, meets flow standards, indirect impacts to wetlands, SDW1B, seasonal groundwater at 336 ft, infiltration facility 0.2 cfs), Pond F (discharges to Walker Creek via riprap outfall, 2yr=1.2 cfs, 100yr=10 cfs, 10 garden hoses=1 cfs, potential enlargement due to outwash soils), Pond G (pulls water from Pond C, discharge spreader above WL18, affects WL44a), drainage features not shown in NRMP plans, stormwater drawings labelled as 65% construction level documentation, flow spreader within wetland, Miller Creek berm at Vaca Farm, geotextile lifespan, channel dynamics, and sewer easement maintenance impacts.

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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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