Summary
The scope of work includes upgrade the aeration basins and associated channels, blowers and secondary control complex (SCC) building. The scope of work to include: various structural modifications, retrofit of aeration basins 3, 4, 7 and 8 to be seismically resilient (bid alternate), retrofit of the secondary control complex (SCC) building to be seismically resilient (bid alternate 2), building modifications including conversion of a mechanical equipment room to an electrical room, roof replacement for the SCC (bid alternate 3), addition of two new turbo blowers (and modifications to one existing turbo blower), Inspection, renovation and replacement of corroded process air piping and process water (w2) piping and associated valves, Replacement of the course bubble channel mixing system with a compressed air mixing system, replacement of fine bubble diffuser discs or fine bubble diffuser system in aeration basins 3, 4, 7 and 8 (bid alternates 4 and 5), replacement of the instrument air system, replacement of building mechanical and plumbing systems, provision of air conditioning in spaces or enclosures containing electrical equipment sensitive to temperature, electrical work associated with equipment replacement and upgrades, instrumentation and control work associated with equipment replacement and upgrades, upgrades to electrical distribution equipment associated with the aeration system, upgrades to the aeration system instrument communications system to PROFINET and associated actuators and instruments with PROFINET compatible equipment, installation of a fire alarm system.