UOSA IFB 27-02 P2NR+ Construction

Upper Occoquan Service Authority -14631 Compton Rd, Centreville, VA 20121

The project generally consists of nitrogen management process improvements andcomplementary Renewal and Replacement (R/R) improvements at the Millard H.Robbins, Jr. Regional Water Reclamation Plant (RWRP). Major work includesreplacement of eight (8) screw pumps at Primary Effluent Lift Stations (PELS) 55/1and 55/2; upgrade of two (2) RAS pumps and increased pumping capacity at RASPump Station 9/1; and cyclone/settleability improvements at Selector Basins 56/1â56/3 and 56/4â56/7; replacement of secondary clarifier mechanisms for SecondaryClarifiers 6/5 and 6/6; replacement of electrical equipment in Load Center No. 1 andLoad Center No. 8; replacement of a primary sludge pump in Primary Sludge PumpStaton 54/2; and other R/R improvements associated with the Primary Effluent PumpStations, Aeration Basins, Secondary Clarifiers, Return Activated Sludge PumpStations, Secondary Effluent Collection Box, Primary Sludge Pump Stations,Selector Basins and associated pipe galleries, Biofoam Pump Station, SecondaryClarifier Dewatering Pump Station, Aeration Basin Dewatering Pump Station ValveVault, Mixed Liquor Splitter Box, Load Center No. 1, Load Center No. 8, BlowerBuilding, and miscellaneous site piping and site electrical items.

IFB Construction

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