Pomona Mills Washout Bank Stabilization Project

Toronto and Region Conservation Authority (TRCA) in partnership with the Regional Municipality of York (York Region) are proposing to undertake remedial bank stabilization works for sanitary infrastructure protection along Pomona Creek, a tributary of the East Don River, in the City of Markham. The main objective of the works are to remediate the failed bank in order to provide underground sanitary infrastructure protection and reduce public safety risks. 

Project Location

The project area is located along a stretch of Pomona Creek, a tributary of the East Don River, northwest of the closet major intersection at John Street and Bayview Avenue. The immediate bank failure is located northeast of the Pomona Valley Tennis Club parking lot, which is found within Pomona Mills Park at 200 John Street, Markham.

Figure 1. Pomona Mills Project Location. Source: TRCA, 2018.
Learn More About This Project

Project Background

In early 2018, the Regional Municipality of York Environmental Services Department advised TRCA of a bank failure near the Region’s Central Collector Sewer in Pomona Mills Park. TRCA’s Erosion Risk Management team immediately initiated hazard monitoring to assess the risk and commenced planning, design and permitting for remedial infrastructure protection and bank stabilization works in March 2018.

Pomona Mills washout in April 2018
Figure 2. Pomona Mills washout in early spring of 2018. Source: TRCA, 2018
Pomona Mills washout in August 2018
Figure 3. Pomona Mills washout with significant vegetation in August 2018. Source: TRCA, 2018.
Scope of Work
  • Development of detailed designs drawings
  • Obtain all necessary permits and approvals to proceed with construction
  • Construction scheduled for October 2018, pending the receipt of all permits and approvals

Construction Information

To ensure public safety, the northeast portion of Pomona Valley Tennis Club parking lot will be closed during construction. The remaining area of the parking lot, as well as the tennis club and Pomona Mills Park will remain open to the public throughout the construction.

For your safety, please respect all posted construction signs and stay clear of the work areas and equipment. Your cooperation and patience is appreciated.

Public Consultation


Notice of Construction signage will be installed within Pomona Mills Park. Construction notices will also be delivered to properties in close vicinity to the project area.

Project Updates

TRCA is currently gathering the required permits and approvals in preparation for construction in October 2018.

Contact Us:
The Pomona Mills Bank Stabilization Project Planning Team is located at TRCA’s Boyd Field Centre Office in Vaughan:

Restoration and Infrastructure Division, Erosion Risk Management
9755 Canada Company Avenue
Vaughan, Ontario
L4H 0A3

Contacts:
Phil Wolfraim, Project Manager 
phil.wolfraim@trca.on.ca
416.661.6600