WM4830-03 Canal WTP Filter Rehabilitation and Valve Replacements

The City of Columbia is seeking a qualified contractor to perform comprehensive filter rehabilitation and valve replacement work at the Canal Water Treatment Plant (WTP). The scope includes demolition of existing structures, concrete repair, installation of new filter underdrains, replacement of a range of valve types (butterfly, gate, actuated), associated piping, mechanical and electrical components, and full commissioning of the upgraded system. The contractor must provide all labor, materials, equipment, traffic control, and 24‑hour emergency response, and must adhere to a 600‑day substantial‑completion schedule with a total contract period of 630 days. The contract also requires submission of detailed as‑built drawings, spare‑part inventories, warranties, and a one‑year warranty period after final acceptance.