Tag: No Oil Tunnel

FLOW to U.S. Army Corps: Oil Tunnel in the Great Lakes Is Not a Solution

Editor’s note: The following are comments made by FLOW Deputy Director Kelly Thayer on September 8, 2022, in St. Ignace, Michigan, at a public meeting of the U.S. Army Corps of Engineers (Army Corps). The Army Corps, Detroit District, held the session to help set the scope of its environmental impact statement (EIS) study of a proposal by Enbridge, Inc., of Canada, to build an oil tunnel under the Straits of Mackinac to house its Line 5 oil pipeline, which carries oil from western Canada primarily to refineries in Sarnia, Ontario.

Tribal Nations, agencies, communities, organizations, citizens, and other stakeholders can comment on the tunnel proposal through Oct. 14, 2022, via mail, through the Army Corps project website, or at the Army Corps’ Oct. 6, 2022, online meeting. The Oil & Water Don’t Mix campaign, of which FLOW is a founding steering committee member, also is collecting and forwarding comments to the Army Corps using an email template that suggests key points to make.

Learn more about FLOW’s efforts to shut down Line 5 and stop the proposed oil pipeline tunnel on FLOW’s Line 5 program page and new Line 5 fact sheet.


Good evening. My name is Kelly Thayer. I am Deputy Director of the nonprofit organization For Love of Water or “FLOW”, the Great Lakes law and policy center located in Traverse City, Michigan.

Kelly Thayer, FLOW Deputy Director

Thank you to Commander Boyle and the U.S. Army Corps of Engineers, Detroit District, for this opportunity to comment. FLOW has supporters throughout the Great Lakes Basin, including right here in St. Ignace. They rely on us to ensure that the Great Lakes remain healthy, public, and protected for all.

Simply put, the Straits of Mackinac is the worst possible place to build and operate an oil pipeline tunnel. Any rupture, explosion, or other event resulting in a major oil spill in the Straits would contaminate the very heart of the Great Lakes, which hold 95% of the fresh surface water in the United States.

Simply put, the Straits of Mackinac is the worst possible place to build and operate an oil pipeline tunnel. Any rupture, explosion, or other event resulting in a major oil spill in the Straits would contaminate the very heart of the Great Lakes, which hold 95% of the fresh surface water in the United States.

In the best case scenario, Enbridge-contracted, oil spill response teams would be able to remove no more than 30% of the oil from such a spill.

With this in mind, the Army Corps’ Environmental Impact Statement or “EIS” review of the project should be scoped to eliminate the risk of a pipeline-related oil spill into the Great Lakes.

Unfortunately, the draft purpose and need statement limits the range of risk-elimination options by focusing only on connecting Enbridge’s existing North Straits Facility and Mackinaw City pump station. The purpose and need statement should be revised to eliminate these geographic constraints and focus more generally on liquid-petroleum product transportation solutions to approximate the existing capacity of Line 5.

The draft purpose and need statement’s language regarding the minimization of environmental risks is not specific enough in the context of project-related oil spills. The statement should be revised to include both minimizing environmental risks and avoiding any risk of a pipeline-related oil spill into the Great Lakes.

The environmental study’s focus “should be revised to include both minimizing environmental risks and avoiding any risk of a pipeline-related oil spill into the Great Lakes.”

The alternatives analysis must include, at a minimum:

  1. A no action alternative that would use existing capacity in other pipelines and, if necessary, other transportations solutions–such as rail and truck transport of natural gas liquids–in lieu of building new pipeline infrastructure.
  2. An alternative to connect Enbridge’s Superior, Wisc., and Sarnia, Ontario, terminals without crossing the Great Lakes.
  3. A tunnel alternative that fully eliminates the risk of oil intrusion into the Straits in the event of an explosion or similar event.

The relative risks of the proposed oil tunnel project don’t matter when Enbridge is unlawfully operating the existing oil pipelines in the Straits.

In performing this alternatives analysis, the EIS must evaluate the environmental risks of the proposed project independently of Enbridge’s existing oil pipeline infrastructure in the Straits.

Nearly two years ago, the State of Michigan revoked and terminated the 1953 Easement that allegedly authorizes Enbridge to occupy state bottomlands. The relative risks of the proposed oil tunnel project don’t matter when Enbridge is unlawfully operating the existing oil pipelines in the Straits.

FLOW looks forward to submitting written comments by the October 14, 2022, deadline, in addition to these preliminary, verbal comments.

In short, we recommend that the Army Corps scope its EIS review of the oil tunnel project to eliminate the risk of a pipeline-related oil spill into the Great Lakes, which provide drinking water for millions of people in the United States and Canada, drive our economy, and define our way of life. Thank you.

FLOW to Michigan Public Service Commission: No Enbridge Oil Tunnel Without Authorization Under Public Trust Doctrine

Editor’s Note: FLOW submitted the following comments today to the Michigan Public Service Commission in advance of the MPSC’s March 17, 2022, public meeting regarding Enbridge’s oil tunnel proposed through public bottomlands in the Straits of Mackinac. See the MPSC’s March 17 meeting agenda, and learn about the opportunity to comment in person or online. Members of the media, please contact FLOW Legal Director Zach Welcker at (231) 620-7911 or Zach@FLOWforWater.org with any questions.


Dear Honorable Members of the Michigan Public Service Commission (“MPSC”):

Thank you for the opportunity to comment.

FLOW urges the MPSC to suspend further consideration of this ill-conceived oil tunnel project until Enbridge seeks and obtains legal authorization to occupy state bottomlands from appropriate state agencies. 

We have previously provided the MPSC with detailed analyses of this issue. Suffice it to say, Enbridge has not received authorization from the Michigan Department of Environment, Great Lakes, and Energy to occupy state-owned bottomlands under the Great Lakes Submerged Lands Act, 324.32502-32508 and rules. Nor has the Department of Natural Resources made the required public trust findings to authorize a public-utility easement under Act 10, now MCL 324.2129. Without such authorization, Enbridge does not have a “legal warrant” to occupy state-owned bottomlands. See Obrecht v. Nat’l Gypsum Co., 361 Mich. 399, 416 (1960). Thus, it would be a waste of time and resources for the MPSC to continue considering Enbridge’s proposal at this time.

If the MPSC decides, to the peril of Michiganders, to disregard Enbridge’s lack of authorization for this project, it must contend with the fact that Enbridge’s proposal to build a new oil pipeline inside a new tunnel underneath the Straits of Mackinac has ballooned into a supersized infrastructure project. In comparison to the original project, the diameter of the tunnel will now require a tunnel boring machine four times the size initially proposed. Correspondingly, the amount of excavated material that must be transported and disposed of has quadrupled.

Testimony from Enbridge’s geotechnical expert, Michael Mooney, before the MPSC indicates that the tunnel must also be bored deeper than the original design, stating: “The depth to rock was determined to be deeper than assumed during the Alternative study and the resulting vertical profile takes the tunnel deeper in order to remain fully within rock. The geotechnical investigation also revealed highly fractured rock in places that would yield high groundwater pressures during construction.” On file with the MPSC, pp. 19-20.

Yet Enbridge’s initial $500 million estimate of the cost of the tunnel has not been revised. Experts have raised a host of related geotechnical and safety concerns. Significantly, Enbridge has also recently informed the Federal Energy Regulatory Commission that climate concerns may limit the expected service life of the proposed tunnel to twenty years. The MPSC must accordingly reevaluate the prudence of moving forward with this project in light of these significant developments.