statement of qualifications pipeline, oil and gas services - Hatch Mott ...

Alloa Feedermain
Location
Ontario, Canada
Client
Regional Municipality
of Peel
Project Type
Water Distribution and
Storage
Services
Preliminary Design
Detailed Design
Duration
Start Date: January 2011
End Date: Ongoing
Construction Cost
$27.5M (estimated)
Project Description
The Regional Municipality of Peel (Peel) engaged the services of Hatch Mott MacDonald (HMM),
as a sub-consultant of Cole Engineering, to undertake the detailed design and contract
administration for the installation of the 1,200mmØ Alloa Feedermain.
The project requires detailed coordination between multiple ongoing assignments within the
Region's Transportation Group including the widening of Mississauga Road, from south of Bovaird
Drive to Bovaird Drive; the Municipal Class Environmental Assessment (EA) for the widening of
Mississauga Road, from Bovaird Drive to Mayfield Road; and the Class EA for the widening of
Mayfield Road. A portion of the feedermain south of Bovaird Drive from the West Brampton
Pumping Station to the south side of Bovaird Drive was constructed under the existing Mississauga
Road Widening project, which is scheduled for completion in 2012.
Tunnel Section
HMM Role
HMM is responsible for the detailed design of a 3,010m/1,200mmØ concrete pressure pipe (CPP)
watermain along Mississauga Road from Bovaird Drive to Wanless Drive. This unique project
required the construction of: two 2,400mmØ twin tunnels, using tunnel boring machine methods for
both the Alloa Feedermain and the Mississauga Trunk Sanitary Sewer; and a 600mmØ transmission
main using Horizontal Directional Drilling (HDD) methods to cross the Huttonville Creek, CNR
Railway and two Trans-Canada pipelines. The design currently calls for the construction of six castin-place
water valve chambers, two cast-in-place drain chambers, three pre-cast concrete air release
chambers, and four pre-cast concrete drain chambers: all designed to accommodate confined space
entry requirements; including associated valves, appurtenances and fittings.
Project Highlights
Two cast-in-place drain chambers, at an approximate depth of 25m, were designed with
provisions for future access into the 1,000m/2400mmØ tunnel for the 1200mmØ Alloa
Feedermain
HMM and Thurber Engineering Ltd., are preparing a Geotechnical Baseline Report (GBR) for
this project
The twin-tunnels are to be excavated in rock using a 2.4mØ rock tunnel TBM at a 0.80% slope
Crossing of the CN Rail right-of-way will take place approximately 25.5m below the CN track
surface; the crossing includes provisions for settlement monitoring and a continuous 1800mmØ
secondary carrier pipe, using structural steel casing, with full penetration welded joints that
extend 8m beyond the CN Rail right-of-way limits
Sustainability
By using tunnel construction methods to cross under the Huttonville Creek, minimal impacts
are anticipated for the natural environment/habitat at this creek crossing
Third-party Environmental Monitoring was included as part of the Huttonville Creek crossings
Erosion and sediment controls (e.g., rock check dams, sediment control fencing, and ditch
check) were included to reduce the risk of construction runoff into the Huttonville Creek