SEATTLE - The Upper Clear Creek Mitigation Bank is the Port of Tacoma's first mitigation bank and only the second joint wetland and fish conservation bank in Washington. The Port of Tacoma’s Upper Clear Creek Mitigation Bank, designed to offset adverse impacts to salmon and wetland habitat from development, received final approval on June 24 from the state Department of Ecology (Ecology), U.S. Army Corps of Engineers (Corps), and National Oceanic and Atmospheric Administration’s National Marine Fisheries Service (NMFS).