RECOVERY--Y--PROJECT NUMBER 013398, Tres Rios, AZ Tres Rios Environmental Restoration Project - Phase II In-Plant Secondary Effluent Pump Station (IPSEPS), Maricopa County, AZ

Solicitation W912PL-10-B-0009, issued by the Department of Defense through the U.S. Army Corps of Engineers Los Angeles District, concerns the construction of a 460 million gallons per day In-plant Secondary Effluent Pump Station (IPSEPS) as part of the Tres Rios Environmental Restoration Project Phase II in Maricopa County, Arizona. This ARRA-funded project involves the construction of a wet well, basins, flow structures, approach channels, and 84-inch diameter force mains with associated valves, motors, and meters. The scope includes integrating the pump station automatic control system with the existing plant distributed control system, installing a ventilation system, and completing necessary earthwork, concrete work, and the installation of operations and maintenance roads, access ramps, and right-of-way fencing. The procurement process included a sealed bid invitation with a performance period of 550 calendar days and a HUBZone price evaluation preference. Technical specifications cover a wide range of disciplines, including civil, structural, electrical, and mechanical engineering, with specific requirements for fiberglass reinforced plastic weir plates, aluminum grating, and complex HVAC and plumbing systems. The solicitation underwent three amendments to update wage rates, revise bid schedules, and refine technical drawings and specifications before the bid opening on April 6, 2010.