Description
The City of Manchester is seeking to pre‑qualify general contractors for the repair of three secondary clarifiers at its 34 MGD wastewater treatment plant. The work involves replacing deteriorated carbon‑steel fasteners, structural members, and a failed 48‑in influent slide gate, installing isolation plates on a crossover pipe, and replacing 14‑in plug valves, while maintaining continuous plant operation through extensive bypass pumping. Estimated construction cost is $2.75 million and the project is expected to last about 300 calendar days. Only contractors that meet stringent experience, safety, bonding, and financial criteria will be invited to submit formal bids after the pre‑qualification deadline of April 9 2026.
• Scope: structural steel repairs, gate replacement, valve replacement, and temporary bypass system installation.
• Required experience: minimum three completed WWTP/WTP projects > $1 M in the past 10 years; key personnel with ≥20 years total (≥10 years WWTP) experience.
• Pre‑qualification deadline: April 9 2026 (4 PM EST); submissions mailed to Underwood Engineers, Concord, NH.