CMBP GAC Filter Cap Installation

The City of Cincinnati is soliciting bids to remove a portion of existing filter media from one of the eight filters at the Charles M. Bolton Water Treatment Plant and replace it with a new Granular‑Activated‑Carbon (GAC) filter‑cap assembly. The contractor must supply all labor, materials, equipment, temporary facilities, safety programs, testing, start‑up, training, O&M manuals, warranties, and close‑out documentation. The work must be completed within a tight schedule—substantial completion in 60 calendar days and final completion in 85 calendar days after the Notice to Proceed—and is subject to liquidated damages of $1,000 per working day for delays. The bid requires a 10 % bid bond, a 100 % performance bond, and compliance with Ohio prevailing‑wage rules, M/WBE participation, and extensive safety and reporting requirements. • Remove ~2,120 ft³ of existing anthracite and sand media from Filter #8 and dispose off‑site. • Install a new media stack (graded gravel, torpedo sand, silica sand, and 22 in of Calgon‑specified GAC) meeting AWWA and NSF‑61 standards. • Provide all associated documentation (O&M manuals, warranties, as‑built drawings) and adhere to OSHA, EPA, and City of Cincinnati contractual clauses.