The Town of Milton, located in southern Ontario, is part of the Halton Region in the Greater Toronto Area. With a fast growing population, Halton Region sought to increase the Town’s supply and storage of water. The Region retained Associated Engineering to design and provide contract administration and inspection services of a new water feedermain and a 30 million litre, twin-cell reservoir to provide the capacity and security of a larger water supply system. With a total construction cost of $130 million, the infrastructure will also support the delivery of lake-based water supply for the Town of Halton Hills, which is planned for 2021.
The 14 kilometre-long feedermain comprises approximately 3 kilometres of 1200 millimetre diameter pipe, 7 kilometres of twin 900 millimetre diameter pipe, and 3 kilometres of 900 millimetre diameter pipe. The new reservoir will be located near Halton Hills No. 5 Sideroad and Trafalgar Road. Under the sustainable Halton Master Plan, the new feedermain will eventually serve the pump stations at the reservoir site, which feed south Georgetown.
Construction Project Manager and Senior Civil Engineer, Dave Monaghan, tells us, “The work on both the feedermain and reservoir were fast tracked, once the pre-design report was presented to the Region. Despite some site access challenges that reduced our ability to conduct early inspections, our project team was able to compete the final design in just six months.”
The project site presented several challenges, including the need for two major tunnels to cross the Canadian Pacific Railway and Ministry of Transportation of Ontario property.
The final design included evaluating whether water quality could be maintained using a single 1200 millimetre pipe instead of using twin 900 millimetre pipe.
The detailed design was completed in November 2015. The project is currently in construction, with an expected completion date of Fall 2018.
Key personnel on this project are Dave Monaghan, Caroline Korn, Cian McDermott, Wendy Tian, and Roman Gluzman.