On the behalf of the Town of Innisfil and the Lake Simcoe Region Conservation Authority (LSRCA), Greenland International Consulting Ltd. has completed a Conservation Authority Class Environmental Assessment (EA) to address the persistent flooding that occurs in the South Alcona Region. The Study Area for this project is outlined in red in the figure. Residents have expressed concerns about public safety as well as the rising economic burden to repair annual damages (total ~$2M).


The objective of the Conservation Authority Class EA for the South Alcona region was to identify and evaluate engineering design options to address the chronic flooding issues which have persisted in the Belle Aire and Cedar Creek watersheds of South Alcona for over a decade. These design options included green infrastructure to assist with water quality and infiltration. The preferred stormwater management solution would minimize impacts to both the natural and social environments and would be technically feasible and economically sensible.


This study is being conducted in accordance with the Conservation Authority Class Environmental Assessment for Remedial Flood and Erosion Control Projects (Class EA) guidelines. The Class EA process looks at potential environmental, cultural and economic effects, develops alternatives, determines preferred measures, and incorporates mitigation methods. This type of EA includes public and agency consultation.

The preferred stormwater management solution for the South Alcona area included channel improvements in the residential section of the Belle Aire Creek as well as redirecting flows above the 2-yr storm away from the Belle Aire Creek to the local Little Cedar Creek wetland. This diversion would be done with an engineer designed flow splitter.

The diverted water would travel from the flow splitter to the wetland through a conveyance channel designed to increase sedimentation. A 1.2m berm would be built around the Little Cedar Creek wetland so that it would be able to handle the increase stormwater volume. The primary outlet for the wetland would remain the Little Cedar Creek. A weir control structure would be built at the outlet to maintain pre-development flows in the Little Cedar Creek. An emergency outlet would also be built ~1 km southwest of the primary outlet to outlet any storm volume above the 100-yr storm.

Two (2) Public Information Centers (PIC) were held on Tuesday December 10th, 2019 from 4:00pm to 7:00pm and March 10th, 2020 from 4:30pm to 7:30pm. Subject to comments received as a result of these PICs, Greenland was able to complete the Conservation Class EA Environmental Study Report.


By this Notice, the Environmental Study Report for the Alcona South NDMP Project, which documents the process undertaken and the conclusions reached, will be on public record for 30 calendar days in accordance with requirements of the Environmental Assessment Act.

The Project Information File will be available for review between Wednesday April 1st 2020 and April 30th, 2020. An electronic version of the document can be accessed on the LSRCAs website ( as well as the Greenland International Consulting Ltd. website ( To limit physical interaction due to the COVID-19 virus, no physical copies of this document will be available


After reading the Class EA Environmental Study Report (ESR) for the Alcona South NDMP Project, interested persons with additional questions or concerns should provide written comments to the LSRCA or the Project Manager within 30 calendar days of this Notice. Comments should be addressed to:

Bhavika Patel, P.Eng.,
CFM Restoration Engineer,
(905) 895-1281 ext. 322
Lake Simcoe Region Conservation Authority

Josh Maitland, P.Eng
Project Manager,
(705) 444-8805 ext. 263
Greenland International Consulting Ltd.

If major concerns arise which cannot first be resolved through discussions with the Project Manager, a person or party may request that the Minister of the Environment make an order for a project to comply with Part II of the Environmental Assessment Act (referred to as a Part II Order), before proceeding as a flood remediation project.

Projects eligible for a Part II request as part of this EA include all projects listed in Section 8.1 of the ESR.

Requests must be received by the Minister at the address below within 30 calendar days of this Notice.

Minister of the Environment and Climate Change,
Ontario The Honourable Jeff Yurek
College Park 5th Floor, 777 Bay Street,
Toronto, ON
M7A 2J3

In addition, a copy of the request must also be sent to the LSRCA’s Project Manager.

If there is no “request” received by April 30th, 2020, the Alcona South NDMP Project Environmental Study Report Conservation Authority Class Environmental Assessment will be implemented and will proceed as presented in the planning documentation.

Information will be collected in accordance with the Freedom of Information and Protection of Privacy Act. With the exception of personal information, all comments will become part of the public record. This notice issued at the Town of Innisfil on March 31st, 2020

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