EXH AR023036: ACC Comment Letter — Azous Environmental Sciences Review Third Runway Wetland Stream Fisheries Impacts

A February 2001 letter from Azous Environmental Sciences, submitted on behalf of the Airport Communities Coalition, critiques the Port of Seattle's environmental mitigation plan for the proposed third runway at Seattle-Tacoma International Airport. The letter argues that key analyses of wetland functions, permanent and temporary wetland area losses, and cumulative environmental impacts are missing or scientifically unsupported in the Port's December 2000 documents. The author concludes that federal and state agencies lack sufficient information to determine whether the project complies with the Clean Water Act or whether the proposed mitigation adequately offsets the project's adverse impacts on wetlands, streams, and fisheries.

Notes

Letter dated February 16, 2001 from Azous Environmental Sciences (professional wetland scientist SWS 001067) to USACE Project Manager Jonathan Freedman and Washington State Department of Ecology Environmental Specialist Ann Kenny, filed on behalf of the Airport Communities Coalition (ACC). Reviews December 2000 updates to the Natural Resource Mitigation Plan (NRMP), Wetland Functional Assessment and Impact Analysis, Wetland Delineation Report, Biological Assessment, and Comprehensive Stormwater Management Plan prepared by Parametrix, Inc. for the Port of Seattle’s third runway project at Seattle-Tacoma International Airport. Critiques absence of wetland function loss analysis, unscientific calculation of permanent and temporary wetland area losses, and failure to conduct cumulative effects analysis under Clean Water Act Section 404. Analyzes functional rankings for Miller Creek and Des Moines Creek watershed wetlands using data from NRMP Tables 3-1 and 3-3, citing resident anadromous fish, passerine birds, waterfowl, amphibians, small mammals, organic export, groundwater, flood storage, and nutrient/sediment trapping functions. References USACE permit 1996-4-02325.

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