FLOW & Straits-Area Citizens Groups Call on State of Michigan to Deny Permits for ‘Line 5’ Oil Pipeline Tunnel in Straits of Mackinac

Citing inadequate legal authorization, an incomplete application, and lack of a comprehensive state review, FLOW and two Straits-area citizen groups called today in formal comments on the State of Michigan to deny pending permits sought by Enbridge to construct and operate a roughly four mile-long tunnel under the Great Lakes. 

The Canadian corporation’s giant tunnel, at roughly 20-feet in diameter, would house a new Line 5 pipeline to continue for another 99 years carrying up to 23 million gallons of oil and natural gas liquids a day through the public trust bottomlands of the Straits of Mackinac, where Lake Michigan connects to Lake Huron.

The comments by FLOW, the Straits of Mackinac Alliance (SMA), and the Straits Area Concerned Citizens for Peace, Justice, and the Environment (SACCPJE) came at today’s deadline in legal and technical comments directed to the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and Michigan Department of Natural Resources (DNR). The groups’ comments identify critical deficiencies in the project’s construction permit application filed in April, its legal authorization, and the review by state environmental agencies of expected impacts to wetlands, bottomlands, and surface water, including from the daily discharge of millions of gallons of wastewater during construction.

“Enbridge’s attempted private takeover of the public’s bottomlands under the Straits of Mackinac for the tunnel project is not authorized by the state, not good for the climate or Gov. Whitmer’s goals, not good for public health, safety, and welfare, and not consistent with public need as the nation and world turn to clean energy for survival,” said Liz Kirkwood, executive director of FLOW, a Great Lakes law and policy center based in Traverse City. 

“We share the public’s deep concerns about the Canadian pipeline company’s tunnel proposal and its lack of necessity, and risks it would pose to the Great Lakes, drinking water, the fishery in the Straits, Tribal rights, the Pure Michigan economy, the climate, and a way of life,” said Kirkwood. “The biggest consequence right now of this proposed project is that it distracts the government from its duty to shut down the current Line 5 oil pipelines that pose a clear-and-present danger to the Great Lakes.”

To date, more than 2,600 members of the public—including individuals, families, business owners, community leaders, organizational leaders, and others—have filed comments with EGLE urging the agency to reject Enbridge’s proposed tunnel permits. Many groups, including FLOW and Oil & Water Don’t Mix, have articulated scientific and legal deep concerns about the Canadian pipeline company’s tunnel proposal and its lack of necessity, and risks to the Great Lakes, drinking water, the fishery in the Straits, Tribal rights, the Pure Michigan economy, the climate, and a way of life.

The comments Enbridge’s proposed oil pipeline tunnel submitted today by FLOW, SMA, and SACCPJE determined that EGLE:

1. Cannot properly proceed on administering the Enbridge permit applications unless and until the December 2018 easement and tunnel lease have been authorized under the Public Trust Doctrine (PTD) and Great Lakes Submerged Lands Act (GLSLA);  
2. Must undertake an analysis of the lifetime greenhouse gas emissions attributable to the proposed tunnel, particularly in light of Governor Whitmer’s Executive Directive 2020-10 setting a goal of economy-wide carbon neutrality by 2050. Extending the life of Line 5 for the next 99 years with  the tunnel project is fundamentally at odds with the reduction of greenhouse gases necessary to avoid the most catastrophic effects of climate change.
3. Is required to measure the benefits of the proposed tunnel against its reasonably foreseeable detriments, under Part 303 of the Natural Resources and Environmental Protection Act (NREPA), which includes determining the:
   1. Public and private need for the project; and 
   2. Availability of feasible and prudent alternative locations and methods to accomplish the expected benefits from the activity; and
4. Is required to comprehensively and independently consider and determine whether the tunnel project is consistent with protection of Michigan’s natural resources under the Michigan Environmental Protection Act (MEPA). The state must determine whether extending the life of an oil pipeline that will emit approximately tens of  million tons of greenhouse gases annually for the next 99 years, under the state NREPA, “is consistent with the promotion of the public health, safety and welfare in light of the state’s paramount concern for the protection of its natural resources from pollution, impairment or destruction.”

EGLE expects to issue its final decision on the oil pipeline tunnel permits and for wastewater impacts in late November and impacts to wetlands and submerged lands in early December. While Enbridge takes an estimated 5-10 years to study, seek permits, and build an oil tunnel, the 67-year-old Line 5 oil pipelines in the Straits would continue to decay and endanger the Great Lakes, jobs, and the drinking water supply for half of Michiganders. 

“The unique characteristics of the Straits of Mackinac make the area incredibly susceptible to disruption and destruction if EGLE approves the permits for Enbridge’s proposed tunnel,” said Patty Peek, Chair of the Straits of Mackinac Alliance. “The surrounding wetlands, shorebirds, waterfowl, and aquatic species will be in jeopardy from the millions of gallons of wastewater to be discharged daily into the surface waters of the Great Lakes. Local drinking water wells may be polluted and/or drilling operations may imperil the aquifer. Missing information and a lack of specificity on applications cannot be acceptable. The risk to our precious waters is too great to allow this tunnel project to move forward.”

For more information, see:

• FLOW’s Program: Line 5 in the Straits of Mackinac.
• FLOW’s Fact Sheet: Line 5-Key Facts. 
• Straits of Mackinac Alliance
• Straits Area Concerned Citizens for Peace, Justice, and the Environment