Notes
Exhibit 348 (AR 021148). Letter dated September 6, 2000 from Peter Willing, Ph.D., Water Resources Consulting L.L.C., Bellingham, Washington, to Tom Luster, Washington State Department of Ecology, submitted on behalf of the Airport Communities Coalition (ACC). Critiques the Port Of Seattle’s Implementation Plan for the Des Moines Creek Flow Augmentation Facility in connection with Sea-Tac Airport third runway expansion. Identifies nine deficiencies: plan is a bare concept with no finalized design or secured water source; no hydrologic analysis of extreme climatic conditions; plan co-opts the Des Moines Creek Basin Plan’s 1 cfs minimum flow recommendation; Seattle Public Utilities water reaches 20°C in September making temperature targets unachievable; reliance on pumps, sensors, and chemicals whose continuity cannot be assured; 4,500-foot pipeline through golf course with no construction details; dechlorination of drinking water conditioning chemicals unresolved; poor fish passage characteristics of proposed flow measurement devices; and Highline Water District Well #1 exploits three aquifers in a common casing contrary to state guidance.