This document outlines the U.S. Army Corps of Engineers' analysis of a December 2000 mitigation plan developed by the Port of Seattle to offset wetland impacts caused by the construction of a third runway at Seattle-Tacoma International Airport. The plan covers roughly 18.6 acres of on-site wetland restoration near the airport—including the relocation of a stretch of Miller Creek and improvements to Lora Lake's shoreline—as well as 23.39 acres of off-site wetland mitigation in Auburn. Key goals include improving water quality, restoring floodplain and fish habitat, and managing vegetation to reduce wildlife hazards such as bird strikes near the airfield.Open full document
Notes
This document presents the U.S. Army Corps of Engineers’ analysis of the Port of Seattle’s December 2000 Natural Resource Mitigation Plan for the Sea-Tac Airport third runway project. It details on-site mitigation measures at Vacca Farm and Lora Lake, including relocation of Miller Creek, restoration of floodplain wetlands, and enhancement of upland buffers. The analysis evaluates improvements to water quality, hydrologic, and habitat suitability functions resulting from converting farmland to palustrine shrub and forested wetlands.