2025 Water Pollution Control Facility Upgrades

Description: Improvements to the existing Effluent Tertiary Filters including removal and replacement of the filter media, replacement of filter nozzle assemblies, coating of the inner cell tank walls, removal and replacement of backwash waste butterfly valves, replacement of pneumatic valve control airlines, removal and replacement of cell isolation butterfly valves, installation of a grated stainless-steel platform in the filter center column, and other miscellaneous work. Replacement of the existing Bar Screen including removal and replacement of the bar screen, disconnecting power and control wiring from the existing screen and reconnecting to the new screen, and fabrication and installation of a screenings chute to connect to the new Bar Screen to the existing Screenings Washer Compactor. An alternate bid to also include replacement of the existing Screenings Washer Compactor with a new piece of equipment is also to be provided. Improvements to the existing Aeration Basin including replacement of the existing chain driven assemblies and motors with new right-angle gearbox drives and motors, removal of existing soft motor starters, installation of variable frequency motor controllers, integration of SCADA controls, new conduit and wiring, and other miscellaneous work. Improvements to the existing Backwash Holding Tank including reinforcing steel and concrete repairs, minor demolition, removal and replacement of handrails, coating of the tank concrete walls, and other miscellaneous work. Preparation and coating of walls, ceilings, floors, piping, and equipment in the Grit Room and Filter Room and other miscellaneous surfaces. Installation of a bypass pumping connection in the existing buried heavy sludge pipeline from Final Clarifier No. 2 to the Main Building and other miscellaneous site work. All other civil, mechanical, structural, electrical, and instrumentation and control work necessary for a complete and functioning project as shown or specified.