Risk Analysis:
No significant or critical risks are associated with this report. The recommendation requires a mandatory 30-day review period which provides an opportunity for the public to provide written comments to the project proponent contacts. A request may be made to the Ministry of the Environment, Conservation and Parks for an order requiring a higher level of study, or that conditions be imposed, only on the grounds that the requested order may prevent, mitigate or remedy adverse impacts on constitutionally protected Aboriginal and treaty rights. Inthe event an objection is filed, the Minister of the Environment will undertake a review and render a decision which may deny with or without conditions, refer the matter to mediation, or require the proponent to comply with Part II of the EA Act.
Climate Change Risks
Climate Change Mitigation:
Future pumping stations designs will be completed following the latest standards including considerations for energy efficiency.
Client Change Adaption:
Extreme precipitation and high surface water levels were considered when developing and evaluating the recommended basement, surface and coastal flooding solutions.
Extreme Precipitation Events: Sewer and overland drainage modelling was completed for various intensity storms including the Urban Stress Test (Climate Change Storm). The recommended solutions include consideration for maintaining emergency access and access to vulnerable areas under the Climate Change Storm. To minimize the risk from sanitary sewer back-ups, backflow preventers and sewage ejector pumps are recommended.
High Surface Water levels: To reduce risk from overland flow in the event of Lake St Clair or the Detroit River reaching its 1:100 year water surface elevation, extension of and improvements to the existing barrier landform system along approximately 6km of Riverside Drive, and installation of backflow prevention devices on sewers, are recommended.
Financial Matters:
In 2019 and 2020 City Council approved changes to the Sewer Surcharge funding resulting in a dedicated allocation of approximately $11M annually for