The Greater Nanaimo Pollution Control Center project consists of an expansion and upgrades to the existing wastewater treatment plant in general, and specifically new wastewater process structures including screening building, bioreactors, secondary clarifiers, aeration and thickening building, RAS pump station, gravity thickeners, service tunnels and miscellaneous chambers; construction of a new maintenance building and pre-engineered storage building; modification, expansion and upgrade to existing structures including digester 3 electrical room, headworks, sludge dewatering building, digester 2, and the operator services building and operations building; site-works including ground improvements for structural foundations, rock blasting and removal, excavating, backfilling, grading, drainage, fencing, site dewatering and landscaping; roadworks including gravel roadway, curbing and asphalt paving; site utilities including storm sewers, sanitary sewers, water, reclaimed service system water, natural gas and underground electrical; installation of yard process mechanical piping for interconnection of the proposed works; process equipment supply and installation including fine screens, screenings washer/compactor, grit washer classifiers, conveyors, aeration blowers and diffusers, secondary clarifiers, dissolved air flotation tanks, centrifuges, polymer systems, pumps, mixers, digester gas mixing system, gates and other specified equipment; supply and installation of foul air treatment systems including primary odour control facility, FRP ducting, fans, valving and carbon scrubbers; installation of mechanical piping, valves, fittings and appurtenances to interconnect equipment and tie-into proposed works; demolition of existing structures, equipment, piping and electrical devices, and tie-ins to existing structures and maintenance of existing plant operations; new electrical service, substation, transformers and standby diesel generator; electrical and instrumentation to service the new facilities and miscellaneous required to complete the work; installation of HVAC, natural gas, hydronic and plumbing systems.