Specifications include, but are not limited to: Construction of new aerobic digesters with associated piping, earthwork, concrete, electrical, and instrumentation. The new digesters include blowers, air diffuser equipment, controls, air piping, pumps, and valves. The digesters will be constructed with concrete and will include walkway, handrails and stairs. Instrumentation work includes controls and updates to existing Supervisory Control and Data Acquisition (SCADA) system. Sewer Lift Stations - Construction of improvements to three existing sewer lift stations and one vacuum sewer station. Improvements include new pumps, controls, piping, valves, valve vaults, emergency generators, wet well concrete rehabilitation, site security upgrades and updates to existing SCADA