Royal Rouge Trail Erosion Control Project - Toronto and Region ...

Terraprobe Limited (1994) – Bank Stability Assessment
Terraprobe Limited conducted a slope stability assessment of the valley wall directly behind
Nos. 40 - 42 Royal Rouge Trail to assess ongoing erosion concerns. The firm concluded the
residential dwelling was not in jeopardy; however there would be additional crest loss in
order for the slope to re-position to a stable slope angle. Furthermore, Terraprobe outlined
several temporary stabilization and maintenance alternatives to help stabilize the slope in the
short term, and noted that further planning and finances were required to develop a design
that would offer long-term stabilization.
Terraprobe Limited (2008) – Geotechnical Investigation and Slope Stability Assessment
As a result of the ongoing concern regarding active erosion in the area, TRCA retained
Terraprobe Limited in 2007 to conduct a geotechnical investigation to re-asses the risk to the
properties at Nos. 30 to 48 Royal Rouge Trail. The results of the investigation revealed there
was significant risk of additional property loss at all to all 10 of the residential properties, and
as a result Terraprobe recommended that large scale remedial works be undertaken to
provide long term protection to each of the properties at risk. As such, this investigation
initiated the need for a Class EA to examine slope stability alternatives from Nos. 30 to 48
Royal Rouge Trail.
2.2.2 Planning Documents
The study area has received extensive scrutiny at all levels of government as part of the
Toronto Watershed planning process. In developing the range of alternatives for evaluation
under the Class EA guidelines, TRCA incorporated many of the planning recommendations
from the municipal, provincial and federal governments into the study.
Greenspace Strategy (1989)
The Toronto and Region Conservation Authority completed the Greenspace Strategy (the
strategy) for the Greater Toronto Region, a strategic planning exercise to establish long-term
goals for the management of greenspace within the Authority’s jurisdiction. This strategy
provided direction for the conservation of the Lake Ontario waterfront, the river valleys, and
the Oak Ridges Moraine, and identified the need for greater cooperation to achieve more
integrated natural resource planning and management. It proposed that the TRCA establish a
planning task force for each major watershed, and for the Lake Ontario waterfront within the
TRCA’s jurisdiction.
As per the strategy a watershed defined as the total area of land drained by a watercourse
and its tributaries, and the objective of the strategy is to provide direction on natural systems
protection, restoration, public education, recreation, and cultural and heritage planning
activities within a watershed. To date, the TRCA has established planning task forces and
completed watershed management strategies for three of the nine watersheds within its
jurisdiction. In 1990, the TRCA adopted the Comprehensive Basin Management Strategy for
the Rouge River Watershed, the first watershed management strategy. Forty Steps to a New
Don, was published by the Don Watershed Task Force in 1994, and in 1997 Legacy: A
Strategy for a Healthy Humber and A Call To Action were published as an integrated
watershed management strategy for the Humber River (TRCA 1999).
Comprehensive Basin Management Strategy for Rouge River (1990)
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Project Plan
Toronto and Region Conservation Authority
Royal Rouge Trail Erosion Control Project January 2010