Specifications include, but are not limited to: • Construction of a new multi-level grit removal building, including grit removal basins, grit pumping facilities, grit washing and conveying equipment, odor control, and associated appurtenances and yard piping. • Modifications to existing bioreactors for improved biological phosphorus removal (BPR) including minor modifications to fine bubble diffusers, additional mixing equipment, improvements to the aeration control system, addition of trench drains, modifications to the mixed liquor recycle system, and associated appurtenances and yard piping. • Construction of new duct banks and connections to existing manholes and handholes to bring power and fiber optic cables to the grit facility. Installation of a motor control center, panelboards, lighting transformer conduit and wire etc. to support the new grit facility. A new bioreactor powerhouse with three motor control centers and modifications to the existing powerhouse and motor control centers to support the bioreactor upgrades.