The City of Richmond Hill has completed a study to determine the best way to rehabilitate the Humber Flats Stormwater Management Facility and reduce the number of residential properties in the Regional floodplain.

The study area is shown in the map and services the surrounding residential subdivision. The preferred solution includes the following:

• Replace the existing 2.4m wide x 1.8m high concrete culvert under Humberland Drive with three 3.0m wide x 2.1m high concrete box culverts
• Clean out the sediment, and deepen and expand the existing wet pond to provide enhanced quality treatment of stormwater runoff
• Minor regrading works to decommission the existing filter pads in the valleylands 

Detailed design of this project is expected to start in 2025.

The study has been conducted in accordance with Schedule B of the Municipal Class Environmental Assessment (EA) process.

A Project File Report outlining findings and recommendations is available for public review and comment at RichmondHill.ca/HumberFlatsEA until April 26, 2024. Alternative versions of this document are available upon request.

Any outstanding concerns can be directed to the Project Lead, Jowell Liang at the City of Richmond Hill for a response (see contact information below).

In the event there are outstanding concerns regarding potential adverse impacts to constitutionally protected Aboriginal and treaty rights, a request for an order requiring higher level of study of conditions on those matters should be addressed in writing to the Minister of the Environment, Conservation and Parks and the Director of the Environmental Assessment Branch. Requests on other grounds will not be considered. Requests must be received by the Minister and Director at the addresses below by April 26, 2024, with a copy sent to the City’s Project Lead. If there are no requests by April 26, 2024, the City may proceed with design and construction of the project as documented in the Report.

City Staff Contact:

Jowell Liang, P.Eng.
Project Manager, Water Resources
City of Richmond Hill
225 East Beaver Creek
Richmond Hill, ON L4B 3P4
905-780-2049
jowell.liang@richmondhill.ca

Ministry of the Environment, Conservation and Parks Contact:

Minister
Ministry of the Environment, Conservation and Parks
777 Bay Street, 5th Floor
Toronto ON M7A 2J3
Minister.mecp@ontario.ca

Director
Environmental Assessment Branch
Ministry of the Environment, Conservation and Parks
135 St. Clair Ave. West, 1st Floor
Toronto, ON M4V 1P5
EABDirector@ontario.ca

Any personal information is collected under the authority of the Municipal Act 2001, S.O. 2001, c.25, and the Environmental Assessment Act, R.S.O 1990, c. E.18. This information will be used and/or disclosed for the purposes of compiling comments, responses and related activities for the assessment process. Individuals who submit correspondence should be aware that any personal information in their communication will become part of the public record. The City will make it available to the public, unless the individual expressly requests the City to remove the personal information from the public record.  Questions about the collection of this information may be directed to Jowell Liang, at 905-780-2049, 225 East Beaver Creek Rd, Richmond Hill, Ontario L4B 3P4.