Hanlan Feedermain – Contract 1
Camilo Quintero,
CH2M HILL, Toronto, Ontario, Canada
ABSTRACT
The Regional Municipality of Peel is constructing the Hanlan Water Project in order to meet the Region’s future water
supply needs, as outlined in the Region’s 2007 Water and Wastewater Master Plan Update and to meet the commitment
made to the Regional Municipality of York (the Region of York) in the 2002 York-Peel Water Supply Agreement. The
project is required to be in service by 2016 to service projected growth, in both the Region and the Region of York.
The Hanlan Water Project is comprised of a new 2400mm diameter Hanlan Feedermain (Hanlan) that will extend
approximately fifteen kilometers north from the existing Lakeview Water Treatment Plant (WTP) to the existing Hanlan
Reservoir and Pumping Station, a 1500 mm subtransmission main that will be installed approximately six kilometers
from the existing Hanlan Reservoir and Pumping Station to the intersection of Cawthra Road and Burnhamthorpe Road,
and finally, the project includes approximately thirteen kilometres of distribution works to be installed at various locations
throughout the project area.
CH2M HILL was selected for the design of the 8.5 km south section of the feedermain, which includes a 6 km-long,
3.75 m diameter, tunnel in rock under major highways and rail bridges using a Tunnel Boring Machine (TBM). In
addition, the work includes the design of approximately seven kilometers of water distribution mains to be installed at
various locations throughout the project area.
The Hanlan tunnel will excavated in the shale of the Georgian Bay Formation. The rock generally consists of grey,
slightly weathered to fresh, weak, fine to very fine grained, thinly laminated shale with occasional siltstone and
limestone interbeds.
This paper will present the Hanlan Feedermain tunnel (Contract 1), which is currently under construction. The Contract
was awarded to McNallly Construction on October 3, 2013 and Notice of Commencement was issued on November 4,
2013.