Elgin Mills Greenway
Discharge of uncontrolled storm runoff to a tributary of the East Don River resulted in significant erosion. The material eroded from the channel accumulated in an on-line SWM pond at the downstream end of the reach, compromising its performance. A unique SWM pond design was needed to minimize impacts to the mature vegetation surrounding the channel. Given the prominent location between a high school and community centre, an expanded public consultation program was needed to secure public and agency support for the project.
Scope of Services
The study scope included completion of a Schedule ‘B’ Class EA, including two Public Open Houses. Supporting studies included detailed hydrologic modelling, fluvial geomorphology assessments, and extensive ecological fieldwork. The alternative solutions were refined to avoid significant vegetation in the valley corridor.
The project originated as two separate assignments for the channel erosion and SWM pond rehabilitation. It became clear that both would be best rehabilitated by constructing a new SWM pond at the upstream limit of the valley corridor where storm runoff discharges from two uncontrolled storm sewers. The footprint of the new facility displaces the existing eroded channel and allows the downstream channel and pond to be safely rehabilitated back to their natural condition.
Town of Richmond Hill
Richmond Hill, Ontario
2014 - 2017