The City of Columbia is soliciting qualified contractors to replace the existing sludge thickening facilities at its Metropolitan wastewater treatment plant, delivering a modern, regulatory‑compliant system. The scope includes design, demolition of old equipment, procurement, installation, testing, and commissioning of new thickening units. • Replace existing sludge thickening equipment with a new, state‑of‑the‑art system. • Perform demolition, site preparation, and construction activities in the WWTP. • Provide full engineering, procurement, and construction (EPC) services, including testing and commissioning. • Ensure compliance with all applicable environmental and regulatory requirements. • Complete the project in accordance with the bid schedule, with submissions due April 23 2026.