Lemieux Island Water Purification Plant Filter Expansion

The work at Lemieux Island consisted of expanding the existing 12-cell filter gallery and significantly retrofitting the existing facility, which involved numerous tie-ins and shutdowns.

The scope included:

• Six new filter cells and gallery extension over the existing south reservoir
• Extensive concrete refurbishing and baffle installations within each reservoir
• Sequenced retrofit to the existing floc tanks, including baffle installations
• A new blower building, new flow metering chambers
• New sections of CPP piping requiring multiple tie-ins completely redirecting process flow for the facility
• Installation of new low-lift pumps, including refurbishment of existing pumps
• Plus the complete sequenced overhaul of electrical distribution and PLC systems all while keeping the entire facility in continuous operation.