Enbridge Documents Related to Pipeline/Anchor Support Damage, June 2020

This page contains reports submitted to the State of Michigan by Enbridge Energy Co. as requested by Michigan Gov. Gretchen Whitmer in the aftermath of the discovery of damage sustained in June, 2020, to the Line 5 pipeline and its anchor supports in the Straits of Mackinac. Enbridge shut down both legs of the Line 5 petroleum pipeline in the Straits on June 18, 2020 after examining the damage. The lines remain shut down after a judge on June 25 concurred with Michigan Attorney General Dana Nessel’s request for a temporary restraining order to stop pipeline operations pending a hearing on a preliminary injunction scheduled for June 30, 2020.

Line 5 Straits Engineering Assessment, East Leg and Anchor EP-17-1 (June 21, 2020)

Line 5 Straits Integrity Assessment, West Leg (June 20, 2020 issued; June 21, 2020 revised)

Line 5 Straits Integrity Assessment, West Leg revised (June 20, 2020 issued; June 21, 2020 revised first dive post ROV inspection results; June 24, 2020 revised additional dive activity, ROV flight path clarification, follow-up dive data confirmation, and expanded historical ILI analysis)

Pictures depicting damage to anchor support EP-17-1 on the east leg of the Line 5 pipeline within the Straits of Mackinac
 Pictures depicting damage to anchor support EP-17-1 on the east leg of the Line 5 pipeline within the Straits of Mackinac  Pictures depicting damage to anchor support EP-17-1 on the east leg of the Line 5 pipeline within the Straits of Mackinac
Picture depicting damage to anchor support EP-17-1 on the east leg of the Line 5 pipeline located within the Straits of Mackinac. Picture depicting damage to anchor support EP-17-1 on the east leg of the Line 5 pipeline located within the Straits of Mackinac
 Photo credit: Enbridge Energy