P2NR+

The Upper Occoquan Service Authority (UOSA) is soliciting sealed bids for the Phase 2 Nitrogen Removal Plus Other Interim Process Improvements project (Contract P2NR+) at the Millard H. Robbins, Jr. Regional Water Reclamation Plant in Centreville, Virginia. The scope of work includes upgrading two RAS pumps and increasing pumping capacity at RAS Pump Station 9/1, implementing cyclone and settleability improvements at Selector Basins, replacing secondary clarifier mechanisms, and replacing electrical equipment in Load Centers 1 and 8. The project is divided into three subprojects with substantial completion timelines ranging from 1,120 to 1,456 calendar days, with final completion required within 90 days of the completion of Subproject C. The contract will be awarded to the lowest responsive and responsible bidder based on the total cost of the base bid. Bidders must be licensed in the Commonwealth of Virginia and provide a bid bond, cash, or certified check as security. Key personnel, including the Project Manager and Project Superintendent, must have at least 10 years of experience in complex wastewater construction. The project is managed by Jacobs and requires the use of Trimble Unity Construct for electronic communications. Bids are due by 2:00 PM on October 22, 2026, and can be submitted physically at UOSA's Administration Building F or electronically via eVA. The contract includes a total owner's bid allowance of 775,000 dollars for potential additional work, such as structural concrete repair and hazardous materials mitigation.