Upgrades & expansion for the existing 5 MGD Front Royal WWTP. Demolish existing grit removal system and primary sludge pumping station and construct new headworks. Build a new cake storage building. Construct new primary clarifiers and process building. Modify existing aeration basins and construct a new post anoxic-reaeration basin. Construct new final clarifiers and recirculation pumping station. Construct a new UV disinfection system. Modify digesters and construct new post aeration tank. Modifiy existing ATAD tanks and construct a new ATAD building. Demolish and replace septage receiving station. Civil, Mechanical, Piping, Electrical and Instrumentation System improvements to support the WWTP upgrades.