Replace existing storm sewer and appurtenances, and construct a Stormwater Management Pond

completed

The project will replace and upsize 525m of deteriorating and aging storm sewer, improve inlet infrastructure and provide a stormwater retention facility. The objective of the project is to reduce frequency and extent of surface flooding on public and private properties, and reduce surcharging of storm sewers in high flow events without increasing flows to downstream components of the system. It is also intended to replace aging and failing existing sewers. The existing sewers range from 300 mm to 1050 mm diameter. The new sewers will range from 300 mm to 2100 mm diameter. The existing material is corrugated steel pipe and concrete, and proposed pipe material for small bore pipe is PVC and large bore will be reinforced concrete. One portion of the sewer will be a 1.8m by 1.2m concrete box culvert. The Stormwater Management Facility is designed for a 1 in 100 year return period and the Regional Storm, and design storm volume in the retention facility is approximately 8 hectare-meters (80,000 cubic meters).