Notes
AR028014. Port of Seattle biological assessment map depicting wetland and stream impacts in the Miller Creek Basin related to the Seattle-Tacoma International Airport Third Runway project. Shows delineated wetlands verified by Army Corps of Engineers (ACOE), wetlands not verified by ACOE, creeks, boundary of acquisition area, third runway and interconnecting taxiways, third runway embankment and RSAs, and relocated S 154th Street. Features labeled include Lora Lake, Lake Reba, Miller Creek, Channel V1, Channel V2, South 156th Street bridge replacement, runway safety areas (RSAs), north employee parking lot, and numbered wetland parcels. Annotations describe mitigation measures: retaining walls to minimize wetland impacts, TESC outside wetlands to reduce temporary impacts, reduced perimeter road width, temporary interchange designed to avoid wetland, and minimum 50-ft buffer between perimeter road and Miller Creek. FAA minimum design and operational standards referenced.