Virginia's eProcurement Marketplace #IFB 127048 (IFB-127048)

Water reclamation plant nitrogen-management and renewal construction

The Upper Occoquan Service Authority is seeking construction bids for process improvements and equipment renewals at its Millard H. Robbins, Jr. Regional Water Reclamation Plant. - Government buyer: Upper Occoquan Service Authority; regional water reclamation plant in Centreville, Fairfax County, Virginia. - Procurement: Construction work for nitrogen-management improvements and related renewal and replacement projects. - Major equipment quantities: - Replace 8 screw pumps at Primary Effluent Lift Stations 55/1 and 55/2. - Upgrade 2 return activated sludge (RAS) pumps at RAS Pump Station 9/1, including increased pumping capacity. - Replace mechanisms in 2 secondary clarifiers, Clarifiers 6/5 and 6/6. - Replace electrical equipment at 2 load centers: No. 1 and No. 8. - Replace 1 primary sludge pump at Primary Sludge Pump Station 54/2. - Other notable work: Improve cyclone and settleability processes at Selector Basins 56/1–56/3 and 56/4–56/7, with additional renewal and replacement work involving pump stations, aeration basins, clarifiers, collection and splitter boxes, pipe galleries, the Biofoam Pump Station, dewatering facilities and valve vault, the blower building, site piping, and site electrical systems. - OEMs and vendors: No manufacturers, OEMs, vendors, equipment models, or part numbers are identified.

Description

The project covers nitrogen management process improvements and complementary Renewal and Replacement improvements at the Millard H. Robbins, Jr. Regional Water Reclamation Plant. Major work includes replacing screw pumps, upgrading RAS pumps, improving selector basins, replacing secondary clarifier mechanisms, electrical equipment, and a primary sludge pump. Additional work includes improvements to associated plant systems, facilities, site piping, and electrical items. The posting is Round 2 and notes the posting of Addendum #2.

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