This contract concerns a comprehensive upgrade of the laboratory building HVAC system at the Four Rivers Sanitation Authority campus. The scope includes removal of existing make‑up air units, exhaust fans, air‑handling units, associated ductwork, piping, motors, belts, and controls, followed by installation of new high‑efficiency equipment, remote condensing units, VAV boxes, DDC/BACnet controls, and full testing, adjusting, and balancing. The project also requires coordination of a three‑phase acid‑hood shutdown in March 2024, adherence to strict work‑hour limits, and compliance with numerous state and federal regulations (prevailing wage, safety, environmental, and ADA). The award went to Miller Engineering Co. after an open competitive bidding process.