Notice of Completion: Municipality of Grey Highlands Markdale Wastewater Treatment Plant Schedule ‘C’ Municipal Class Environmental Assessment

Notice of Completion

Municipality of Grey Highlands Markdale Wastewater Treatment Plant Schedule ‘C’ Municipal Class Environmental Assessment

The Municipality of Grey Highlands (Municipality) has completed a Class Environmental Assessment (Class EA) to determine options for expanding the Markdale Wastewater Treatment Plant to service future development.

The Schedule ‘C’ Municipal Class EA, initated by the Municipality in 2022, is being issued for a 30-day review period. It assessed options to address future wastewater servicing needs in Markdale. The preferred solution was identified as upgrading the existing lagoon (wastewater treatment plant), including a new mechanical headworks building with septage receiving, an upgraded aeration system, and an expansion of the rapid infiltration basins.
Further details are presented in the Schedule ‘C’ Class EA report, which is available for review on the Municipality’s website at: https://connectgreyhighlands.ca/lagoonEA.
This study is being conducted according to the requirements of a Schedule C project under the Municipal Class EA process (October 2000, as amended in 2015 and 2023).
By this notice, the Class EA is being placed on public record for a 30-day review period in accordance with the requirements of the Municipal Class EA process. Interested persons may provide comments to the project team listed below by April 20, 2026.

This Notice was issued on March 20, 2026. Find full PDF version here.

Jane Wilson, P.Eng.
Senior Environmental Engineer
J.L. Richards & Associates Limited
107-450 Speedvale Ave W
Guelph, ON N1H 7Y6
Phone: 226-780-7487
Email: jwilson@jlrichards.ca

Jenn Eagan
Environmental Compliance Specialist
Municipality of Grey Highlands
50 Lorne St
Markdale, ON N0C 1H0
Phone: 519-986-1216 Ext. 239
Email: eaganj@greyhighlands.ca

A request to the Minister of the Environment, Conservation and Parks for an order imposing additional conditions or requiring an individual environmental assessment may be made on the grounds that the requested order may prevent, mitigate, or remedy adverse impacts on constitutionally protected Aboriginal and treaty rights. Requests should include your full name and contact information; specify what order is being requested (additional conditions or an individual environmental assessment); explain how an order may prevent, mitigate, or remedy potential adverse impacts; and include any supporting information. The request should be sent to:

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

Ministry of Environment, Conservation and Parks
135 St. Clair Ave. W, 1st Floor
Toronto ON, M4V 1P5
EABDirector@ontario.ca

Requests should also be sent to the Municipality. Please visit the MECP’s website for more information on requests for orders under section 16 of the Environmental Assessment Act at: https://www.ontario.ca/page/class-environmental-assessments-part-ii-order. If there is no request received by April 20, 2026, this Class EA is deemed complete. The Municipality may then proceed with implementing the recommendations.

In accordance with Ontario’s Municipal Freedom of Information and Protection of Privacy Act (MFIPPA), all information provided for or during a Public Process are considered part of the public record. Personal information collected during this study, under the authority of Section 30 of the Environmental Assessment Act, will become part of the public record unless you request that your personal information remain confidential. For more information, please contact the Ministry’s Freedom of Information and Privacy Coordinator at 416-327-1434.