The Lower Monumental Dam Powerhouse in Kahlotus, Washington, requires a modernized HVAC system using river water for heating and cooling, including pressurization for smoke exclusion and a new electronic control system. This is a firm-fixed-price construction contract open to all businesses, with a small business subcontracting plan required for large firms and 100% performance and payment bonds. The solicitation is expected to be posted on SAM.gov around mid to late July 2026, with proposals due approximately 30 days later and an anticipated award in late September 2026. No budget amount is specified in the description. The contractor must provide an on-site Safety and Health Officer and a Quality Control System Manager, each with specific experience and training requirements.