Notes
Letter dated September 1, 2000 from Azous Environmental Sciences to Washington State Department of Ecology (Tom Luster, Erik Stockdale), U.S. Army Corps of Engineers (Gail Terzi, Jonathan Freedman), U.S. Fish and Wildlife Service (Nancy Brennan-Dubbs), National Marine Fisheries Service (Lynn Childers, Steve Landino), and EPA (Lee Daneker), prepared at the request of the Airport Communities Coalition (ACC). The letter analyzes proposed wetland mitigation ratios submitted by Port Of Seattle for impacts to wetlands from SeaTac third runway construction. Key findings: mathematical errors in Parametrix wetland acreage accounting; unsubstantiated temporary vs. permanent impact distinctions; buffer enhancement along Miller Creek and Walker Creek deemed inadequate one-for-one functional replacement; Auburn out-of-basin wetland mitigation lacks functional linkage to WRIA9 watersheds (Miller Creek, Walker Creek, Des Moines Creek); proposed ratios fail DOE recommended standards of 3:1 (Class 2/3 forested), 2:1 (scrub-shrub/emergent), 1.25:1 (Class 4). Reviews documents including Parametrix Wetland Functional Assessment (July/August 1999), Natural Resources Mitigation Plan, Biological Assessment, and SeaTac Runway Fill Hydrologic Studies Report. Exhibit AR023005.