BURKE MOUNTAIN STORMWATER UPPER DIVERSION
Location: Coquitlam, BC
Project Type: Municipal Infrastructure
About This Project
The City retained ISL to lead the design to construction of what became one of the largest stormwater pipe projects in BC. ISL created a complex stormwater management system that conveyed up to 21,000 litres/sec of flow through Burke Mountain, bypassing several environmentally sensitive creeks including Hyde Creek and Smiling Creek, and ultimately dissipating a hydraulic force of 550 kN before safely reaching the DeBoville Slough.
- The contractor was not used to working with large diameter HDPE pipe.
- Materials were shipped from Texas.
- Environmental monitoring and mitigation were extremely important as working on the mountain resulted in very quick runoff response when rainfall occurred. The native soil conditions were easy to work with when dry, however, when they were wet or saturated construction equipment mobility and slope stability were compromised.
- Our site reps worked closely with the contractor, showing how the product had to be handled, how it was to be properly fused together and the proper methods for connecting the mechanical joints. Close inspection and quality control were critical in completing the product to a high quality.
- Scheduling was critical. ISL allowed the contractor to start the project in multiple locations and provided quality assurance on grades so adjustments could be made to phasing and the project could stay on its critical path.
- Proper silt fencing, mitigation of slopes and placing impermeable membranes on them helped mitigatethese issues.
- Municipal Engineering
- Structural Engineering
- Supporting Services
- Infrastructure Upgrades
- Stormwater Management
- Municipal Infrastructure
- Climate Resilience
- Environmental Management
- Landscape Architecture
- Sustainable Design
- Supply and Treatment