Greenway Water Pollution Control Plant Expansion

The Greenway WPCP Project was a major expansion to a live plant involving multiple stages and phases which were required to maintain the ongoing functionality of the facility.

Below is a listing of the various activities that occurred during the construction of the expansion to this facility.

• Temporary and permanent retaining walls and temporary unwatering
• Construction of a new headworks building
• Construction of the new final clarifiers & decommissioning of the existing final clarifiers
• Construction of a new 2 section aeration tank with diffuser and channel modifications
• Construction of a new 3 section aeration tank with diffuser and channel modifications
• Construction of RCP sewers
• Construction of the new CEPT bypass sewer & construction of the new effluent sewer
• Retrofitting the 3 section final clarifier 5 to a new WAS holding tank
• Retrofitting the 3 section final clarifier 4 to wet weather storage tank no. 1
• Retrofitting the 3 section final clarifier 3 to wet weather storage tank no. 2
• Retrofitting the 3 section final clarifier 2 to wet weather storage tank no. 3
• Construction of a new RAS pumping stn. & construction of the new TWAS unloading stn.
• Architectural upgrades to the south access house and primary sludge pumping station
• New electrical power feed, control and lighting for emergency generator
• New HVAC and building services, new SCADA system hardware and integration
• Construction of associated pumping, piping, electrical, mechanical and site works
• Management of the new works and integration with ongoing plant operations
• Provision of construction facilities and other temporary controls
• Construction of temporary measures and works including bulkheads for flow isolation inchannels, temporary piping, equipment, piping, civil, mechanical, and electrical needed toperform the work
• SCADA and PLC programming, installation, start-up, testing and commissioning.