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Proposed Project List for Comprehensive Environmental Assessments

Proposed Project List for Comprehensive Environmental Assessments


Posted October 7, 2020

In an earlier blog we discussed the amendments to the Environmental Assessment Act which were enacted by the provincial government without public consultation as a result of the cessation of the consultation normally required under the Environmental Bill of Rights due to the state of emergency.  Those changes contemplated the creation of a list of projects which would be subject to comprehensive environmental assessments.

On September 11, 2020, the government gave notice of the Proposed Project List.  As postings to the Environmental Registry and the public consultation process under the Environmental Bill of Rights has resumed, the Proposed Project List is subject to a public consultation period which ends on November 10, 2020.  A copy of the Notice can be found using this link.

The government has also indicated that a list of proposed projects which will be subject to a streamlined environmental assessment will be coming in the future.

According to the Notice, it is intended that the projects which will be subject to comprehensive environmental assessment are those with the potential for significant environmental impacts taking into account the following criteria:

  1. the magnitude of the project
  2. the geographic extent of the effect
  3. the duration of the effect
  4. the frequency of the effect
  5. the degree of reversibility of the effect
  6. the possibility of occurrence of the effect

The proposed list itself sets out projects under the categories of electricity projects, waste management projects and transportation projects, including projects that are currently designated for Individual Environmental Assessments and for which no exemptions are available under the regulations.

Additional categories of projects which are included are conservation projects and railway lines.

The list also potentially includes mining projects, however the government has indicated that it is looking for feedback as to whether to include mining projects or not and if so, what types of projects should be included.  Some mining projects are subject to environmental assessment under federal legislation.

For each category, with the exception of mining, the proposed list sets out thresholds or triggers as to when environmental assessment would be required.

These thresholds and triggers focus on scope of the projects contemplated.

Electricity Projects

The thresholds and triggers for electricity projects are dependent upon the type of project, be it transmission lines, transformer stations, hydroelectric facilities or electricity generating facilities which use oil as a fuel.  There are also thresholds for project changes involving significant modifications to electricity projects, where the changes would result in the project becoming one of the other type of electricity projects listed.  For transmission lines, the threshold for the projects are related to the amount of electricity transmitted and the distance carried. For hydroelectric facilities and oil facilities, the threshold is based on the capacity of the facility.  These thresholds are proposed to be maintained from the existing regulations, but the government is seeking comments as to whether changes should be made.

Waste Management Projects

For waste management facilities, there are several thresholds or triggers identified for landfills, waste disposal sites (hazardous or liquid industrial waste), thermal treatment sites and also for changes to any of these types of sites.  As with electricity projects, the thresholds and triggers set out for waste management projects are proposed to be maintained from the existing regulations, but the government is seeking comments as to whether changes should be made.

Transportation Projects

For transportation projects, the two types of projects listed are provincial freeways and municipal expressways.  The threshold for provincial freeways is described as “new provincial freeways and associated transitways, including extensions of existing freeways and transitways that are greater than 75 km.”  Accordingly, provincial freeways that are less than 75 km would not automatically be subject to a comprehensive environmental assessment.  To put this into perspective, 75 km is approximately the distance from Ottawa to Arnprior.  It is disconcerting that a project of that magnitude, which could traverse wetlands or other environmentally sensitive areas, would not be subject to a comprehensive environmental assessment.  That being said, these thresholds are said to have been proposed to align Ontario’s environmental assessment requirements with those of the federal government.

Conservation Projects

The conservation projects set out in the proposed list of projects are major flood, erosion control and associated conservation projects.  The thresholds or triggers for these projects are proposed as “significant remedial flood and erosion control projects that facilitate or anticipate development” and “major flood and erosion control projects, such as multipurpose projects.”  The focus is clearly on enhancing development projects.

Railway Line Projects

The railway line projects contemplated for comprehensive environmental assessment are lines within Ontario, and the thresholds or triggers identified are construction, operation, decommissioning and abandonment of a new railway line for freight or passenger rail that requires 50 km or more of new right of way or an extension of 50 km or more to an existing line that requires a new right of way.

It will be interesting to see the comments on the Proposed Project List generated by the consultation process given that there was no consultation for the amendments to the Act itself.

This blog post was written by Cheryl Gerhardt McLuckie, a member of the Environmental Law team.  Cheryl can be reached at 613-369-0365 or at

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