Digester and Sludge Line Rehabilitation

The City of Millbrae is initiating a significant rehabilitation project aimed at upgrading the conveyance piping and valves at the Water Pollution Control Plant’s sludge treatment system. The project involves replacing outdated and inoperable valves, including four 14-inch plug valves and actuators, as well as installing new valves of various sizes, such as a 14-inch plug valve with an actuator, a 6-inch plug valve, a 3-inch plug valve, and a 6-inch check valve. The scope also covers mobilization, demolition, construction planning, layout, and review activities, alongside essential support functions like traffic control, inventory management, safety protocols, and the preparation of detailed piping shop drawings, submittals, and a comprehensive project schedule. The solicitation, titled "Digester and Sludge Line Rehabilitation," was posted on June 21, 2025, with a response deadline of July 9, 2025. The project is managed by the California Public Works agency and falls within the NAICS code 238910, indicating specialty trade contractors in plumbing, heating, and air conditioning. The contract size ranges from $500,000 to $1,500,000, and interested contractors can contact Nicole Tandel via email or phone for further details. The project emphasizes critical infrastructure upgrades to ensure the continued efficient operation of the plant’s sludge treatment system.