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Line 5: timelines

EGLE Timeline

In April 2020, EGLE received permit applications from Enbridge. EGLE must review the applications to determine completeness within 30 days of receiving them. This 30-day review is tolled, allowing the review period to pause when questions or comments requiring a response are sent to permit applicants.

Public comment, public hearings, and tribal consultations are scheduled after this completeness review. For more information on the permits covered by each of the timelines go to the "Anticipated Permits" page. EGLE has also established a dedicated permit application email account related to the proposed tunnel project, EGLE-Enbridge-Comments@Michigan.gov to provide the public with a simplified means of commenting on the proposed project.

Resource permits timeline (revised Dec 2, 2020)

  • July 1, 2020 - Tribal informational meeting
  • August 6, 2020 - Public informational meeting on permit application
  • August 13, 2020 - Tribal consultation
  • September 10 and 21, 2020 - Public information meetings
  • October 1 and 8, 2020 - Public hearings
  • October 19, 2020 - Deadline for public comments on proposed decisions
  • January 2021 - Final permit decisions

*Permit application deemed complete on June 8, 2020

NPDES permits timeline (revised Dec 2, 2020)

  • July 1, 2020 - Tribal informational meeting
  • August 6, 2020 - Public informational meeting on permit application
  • August 17, 2020 - Tribal consultation
  • August 2020 - Proposed permit decision released
  • September 8 and 15, 2020 - Public informational meetings on proposed permit decision
  • September 29 and October 6, 2020 - Public hearings on proposed permit decision
  • October 19, 2020 - Deadline for public comments on proposed permit decision
  • January 2021 - Final permit decision

*Permit application deemed complete on May 28, 2020

MPSC Timeline

On December 1, 2023, the MPSC issued an order approving Enbridge’s application to replace and relocate the segment of Line 5 crossing the Straits of Mackinac subject to a number of conditions. Additional information regarding the Commission’s order and approval can be found in the MPSC’s Line 5 Issue Brief.

On June 30, 2020, the MPSC issued an order that states that Enbridge is required to file an Act 16 application and to obtain Commission approval to construct the Line 5 Straits Replacement Project through a contested case. The Commission found that the Line 5 project involves important factual, policy and legal issues best resolved through a proceeding that includes discovery, comprehensive testimony and evidence to provide a robust record. The Commission observed that this proposal is a matter of significant public interest best addressed through a contested case. The June 30th order set a date for a public hearing and a subsequent Notice of Hearing scheduled a prehearing conference for the case.

On April 22, 2020, the Commission issued an order putting the Act 16 siting application on hold while it considered the request for a declaratory ruling and established a public comment period. All comments filed in response to this request are available in the case docket.

On April 17, 2020, Enbridge filed an application with the MPSC in Case No. U-20763 requesting siting approval under Act 16 to replace and relocate the Line 5 segment that currently crosses the Straits into a tunnel to be constructed beneath the Straits. In the alternative, Enbridge asked the MPSC for a declaratory ruling that it already has the authority from the Commission to construct the replacement segment based on the Commission's original 1953 order granting authority for the Line 5 pipeline.

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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