Hazardous Gas Monitors Replacement – Southerly Water Reclamation Plant

The City of Columbus is seeking a qualified contractor to replace and add hazardous‑gas monitoring equipment throughout the Southerly Water Reclamation Plant. The work includes supplying, installing, wiring, calibrating, and commissioning new methane, hydrogen sulfide, carbon monoxide, carbon dioxide, and oxygen sensors, along with associated panels, relays, and control‑system integration in multiple plant buildings. The contract is funded through the Water Pollution Control Loan Fund, carries a DBE goal of 5.4 %, and requires compliance with Davis‑Bacon wage rules, AIS requirements, and extensive safety and environmental controls. • Replace existing hazardous‑gas monitors in 11 plant structures (RSP, SGB, DCB‑1‑4, SLB, TFE, TFW, SEV, SCB). • Provide all instrumentation, wiring, enclosures (NEMA 4X/NEMA 12), and control‑panel integration; perform start‑up, commissioning, and training. • Must meet DBE participation, EEO certification, and submit extensive documentation (bid bond, performance bond, insurance, sub‑contractor disclosures, etc.).