The U.S. Army Corps of Engineers Tulsa District has been tasked to solicit for and award a contract for providing and installing two new 8-inch station service draft tube drain gate valves and two new 16-inch unwatering gate valves at Denison Dam Powerhouse. The work will include the removal and disposal of the existing valves, as well as the inspection and refurbishment of existing valves operating equipment, including stem extensions, shafts, bearings, bushings, and associated components. The work will be performed in a confined space within a manhole approximately 30 feet deep, requiring specialized access, lifting equipment, and appropriate safety measures. The type of set-aside decision to be issued will depend upon the capabilities of the responses to this synopsis.