Construct the concrete containment structure to house fish screens in the Packwood Hydroelectric Project tailrace on the Cowlitz River. The structures were placed inside the existing asphalt tailrace and required critical efforts to manage water and control silt. Concrete and steel embedments were placed to precise dimensions to accommodate pre-fabricated screen structures. Fisheries required smooth, grout-cleaned sacked finishes on the concrete walls. We were the civil subcontractor to NAES Power Contractors on this project.