The City of Oregon Infrastructure Improvements project consists of the construction of an Ozone Building and Liquid Oxygen Loading and Storage Area including the installation of ozone generation quipment, ozone contactors, ozone dosing equipment, calcium thiosulfate storage and dosing system, and effluent pumping equipment. It will also involve the modification of the plant's existing filters including demolition of existing filter media, filter underdrains, and existing surface wash system; installation of new filter underdrains, media and new air scour system including blowers and air piping to provide air scour for filters. All work will occur within the boundaries of the existing WTP.