BID 2026-78 Tri-City Water Resource Recovery Facility (WRRF) Aeration Basin Improvements

Clackamas County is soliciting bids for the Tri-City Water Resource Recovery Facility Aeration Basin Improvements project, with an engineer's estimate of 3,700,000.00 dollars. The project involves comprehensive modifications to four parallel concrete aeration basins to replace aging components, including gates, pumps, mixers, instruments, diffusers, and electronic controls. The scope of work is divided into two main phases spanning two summer shut-down seasons, encompassing initial sitework, basin cleaning, structural concrete repairs, and mechanical, electrical, and instrumentation upgrades. Key performance milestones require the refurbishment of basins one and two by September 30, 2027, and all four basins by September 30, 2028, with substantial completion required within 700 calendar days of the Notice to Proceed. The contract will be awarded to the lowest responsive and responsible bidder. Bids must be submitted electronically, and the project is subject to Oregon state prevailing wage rates. The contractual framework is governed by EJCDC C-700 Standard General Conditions and Supplementary Conditions. Required deliverables include a detailed progress schedule, performance and payment bonds, and a comprehensive safety plan. The contractor is also expected to provide specific digital documentation in PDF, AutoCAD, and Excel formats upon completion. Evaluation of the work will be based on strict compliance with technical specifications and the successful commissioning of unit processes for beneficial use by the owner.