Specifications include, but are not limited to: The solids train upgrade project will require extensive modifications/renovation to the facility’s Operation Building to upgrade the facility’s solids train process for separate sludge thickening, pumping, conveyance and sludge cake storage. Major process components of the project include: new thickening centrifuges to separately thicken waste activated sludge, thickened waste activated sludge pumps, sludge mixers, sludge cake conveyance, dewatered sludge cake storage silo, sludge piping/valve modifications and associated appurtances. In addition to the process upgrades, structural steel building modifications, architectural renovations, as well as mechanical and electrical upgrades are required to prepare the existing spaces for the new process and to construct a building addition to expand the existing sludge and grit loading area. There are also ancillary upgrades including but not limited to: a new vactor truck unloading station, exterior odor control duct and supports, and a new mannich polymer unloading station.