Dufferin Street Sanitary Sewer - Replacement of vitrified clay pipe

completed

OBJECTIVE: The Town is actively adopting wastewater infrastructure renewal projects that improve operation and maintenance requirements, reduce inflow and infiltration, provide enhancements to the natural environment and support long term sustainable infrastructure. SCOPE: The scope of this project includes the replacement of 352 metres of 300-375mm diameter vitrified clay sanitary sewers from Central Avenue to the Niagara Parkway that were constructed in 1925. The sanitary sewer is in a poor structural state and is beyond the end of its service life, as such, replacement of the sanitary sewer is the recommended rehabilitation alternative along with the replacement of maintenance holes and sanitary laterals. This is a priority project for the Town. Town Council has accelerated this project to design in 2016 and construction in 2017 through administrative report IS-22-2016. This project was originally forecast for design in 2018 with construction forecast for 2019. The design for this project is currently being completed by an engineering design firm with a planned 2017 construction start. OUTPUT: The estimated reduction in stormwater (inflow & infiltration) entering the wastewater distribution system is approximately 2,700 cubic meters per annum as a direct result of the replacement of the sanitary sewer, maintenance holes and service laterals. This project will directly contribute to reduce point source sanitary overflows to meet both regulatory requirements and objectives of the remedial action plan for the Niagara River.