W.O. 26-08: WRF Digester Gas Pipe Replacement

The City of Billings is soliciting sealed bids for the replacement of digester gas piping and associated equipment at its Water Reclamation Facility. The scope includes demolition of existing gas lines, installation of new piping, valves, foam separators, monorail track systems, and safety devices, as well as required bonding and insurance. Bids must be submitted by November 4, 2026, with a non‑mandatory pre‑bid conference on October 14, 2026. Successful bidders must provide performance and payment bonds and meet Montana labor registration requirements. • Demolition of existing digester gas piping, valves, HVAC ducts, and air handlers. • Supply and install new digester gas piping, valves, control, and safety equipment. • Install two new digester gas foam separators with associated water, drain, power, and control piping. • Provide and install a 3‑ton monorail track system with switches, hoists, trolleys, and structural supports. • Install pressure and vacuum safety devices for primary and secondary digester gas hatches. • Mandatory bonding (10% bid bond, 100% performance and payment bonds) and insurance. • Pre‑bid conference (optional) with site tour on October 14, 2026.