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Line 5: timelines

EGLE Timeline

In February and March of 2025, EGLE received permit applications from Enbridge.

On July 8, 2025, EGLE’s Water Resource Division received Revision 5 of the Joint Permit Application  (JPA) from Enbridge.

Based on EGLE’s review, the application meets the statutory definition of being administratively complete.  The application requests authorization for surface facilities associated with the proposed tunnel. This application applies to Part 303, Wetlands Protection, and Part 325, Great Lakes Submerged Lands, of the Natural Resources and Environmental Protection Act, 1994 PA 451, as amended.

A public notice has been published on July 16, 2025,  which officially starts EGLE’s full review of the proposed project. Due to the strong public interest in the JPA, the public notice period will run from July 16, 2025, through August 29, 2025.  

During this time, EGLE will review the application and information provided by the applicant, collect and consider public comments, continue tribal consultations, and continue to coordinate with other agencies and partners.  

It is common during this official review process for EGLE to request that the applicant consider additional modifications to the project and provide additional information in response to this ongoing review and coordination with other state agencies and other parties.

For more information on the permits covered by each of the timelines, visit the Line 5 anticipated permits page.

EGLE has established a dedicated permit application email account related to the proposed tunnel project, EGLE-Enbridge-Public-Comments@Michigan.gov to provide the public with a simplified means of commenting on the proposed project.

Comment on the Line 5 project via email

The public can also submit their comment online through our public notice webpage for application number HQ3-8BYB-N9DT1 in MiEnviro Portal. You do not need an account to add a comment.

Comment on the Line 5 project online

NPDES permits timeline 

  • March 24, 2025 – Enbridge submitted some of the additional permit application information requested by EGLE
  • February 28, 2025 – additional information regarding the permit application was requested by EGLE
  • February 14, 2025 – NPDES application for permit reissuance was internally reviewed by EGLE staff
  • February 13, 2025 – NPDES application for permit reissuance received

Resources permit timeline

  • July 8, 2025 – EGLE’s Water Resource Division received Revision 5 of the Joint Permit Application  (JPA) from Enbridge
  • March 17, 2025 – Correction requests were sent via MiEnviro Portal and email to the applicant by EGLE requesting additional information.
  • March 3, 2025 – Resources permit application received under submission HQ3-8BYB-N9DT1 and EGLE staff began reviewing the application for completeness.
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Find the latest updates on the Line 5 homepage

Information on the Line 5 tunnel project proposal by Enbridge, including overview, timelines, recent permit documents and decisions, and more.

Go to Line 5 home