Construction of a new 24 MGD influent screening structure, influent pump station & grit removal facility. Construction of a new RAS/WAS pump station, precast electrical building, potable water booster pump station, side stream pump station, 36-inch influent sewer from the existing influent splitter box to the influent structure, 30-inch parallel aeration basin influent and a 36-inch influent to Secondary Clarifier No 4. Modifications to the existing chlorine contact chambers, demolition of the remaining internal structures and demolition of the slab of the existing trickling filters.