The rehabilitation of existing wastewater treatment plant includes but is not limited to: the rehabilitation of existing above ground lift station piping as specified in plans; approximately 150 linear feet of proposed 16-inch force main; one (1) proposed reinforced concrete headworks platform with one (1) proposed drum screen, one (1) proposed manually cleaned coarse bar screen, and two (2) proposed effluent boxes; the rehabilitation of two (2) existing aeration basins, one (1) existing clarifier, two (2) existing digesters, one (1) existing chlorine contact basin; the replacement of one (1) existing blower; the installation of access stairs and bridges; the removal and replacement of piping and valves in wastewater treatment plant units and other associated works as specified in plans, yard piping, electrical and controls.