CX-270143: Idaho Falls (IF)-682 (University Boulevard [UB]3) Mezzanine Expansion

The proposed action would install a new mezzanine to meet the need for additional security space for research, testing, and evaluation of specialized cyber and control systems, located at building IF-682 (UB3) in Idaho Falls. The scope of work includes modification of the west end of IF-682 (UB3), including installation of structural steel, metal stairway, steel decking, and light-weight concrete to construct the mezzanine. Penetrations for utility chases would pass through the mezzanine and roof at various locations. The track system for the overhead doors would be modified from a hi-lift system to a conventional track system after mezzanine installation. Modifications to fire pipe, electrical systems, heating, ventilating, and air conditioning (HVAC) systems, communications systems, and security systems would also be required. In addition, a new electrical/data room, unisex restroom, and various laboratories/rooms would be installed within the secured area.