The Corvallis WWRP Electrical Equipment Replacement Project took place in the electrical and mechanical rooms and in other areas of the WWRP site. Work consisted of the demolition of existing switchgear, automatic transfer switches and electrical equipment, HVAC equipment and an unused diesel engine generator set, replacement of the low voltage metal clad switch gear and associated cable splices and electrical work, replacement of five (5) automatic transfer switches, installation of wall and ceiling insulation, installation of a new packaged heat pump mounted on the roof of the electrical room, installation of a new diesel engine generator set outside the electrical room, associated piping and connections, and other improvements.