MN Gives Pipeline Final Green Light


At the end of November, the United States Army Corps of Engineers and independent Minnesota Public Utilities Commission granted a construction storm water permit for the Enbridge Energy’s Line 3 crude oil pipeline replacement.

According to reports, the Minnesota Pollution Control Agency’s approval marked the last hurdle Enbridge needed to launch construction on the $2.6 billion project.

Line 3 History

Extending from Edmonton, Alberta, to Superior, Wisconsin, the Line 3 crude oil pipeline stretches approximately 1,097miles and was built in the 1960s. The pipeline was originally built to transport 760,000 barrels per day of light, medium and heavy crudes. In 2010, Enbridge voluntarily limited the line to 390,000 barrels per day of light crude only.

As the infrastructure has aged however, putting it at risk for corrosion due to failures in its protective coatings, Enbridge first announced its plans to replace the infrastructure back in 2017.

According to Enbridge officials at the time, Line 3, unlike a number of the company’s other pipelines, was protected with a tapecoat, which has since been found to have disbonded from the pipeline steel. Enbridge says the coating failure has sped corrosion rates, causing concerns over deterioration in the line.

Enbridge intends to replace the existing 34-inch diameter pipeline with a new 36-inch diameter pipeline for 13 miles in North Dakota, 337 miles in Minnesota, and 14 miles in Wisconsin. The project is expected to help maintain Enbridge’s high safety standards, reduce future maintenance activities and create fewer disruptions to landowners and the environment, as well as restore the historical operating capabilities of Line 3.

Permit application documentation also revealed that Enbridge planned to construct the new pipeline of high-strength GX-70 steel, with a nominal wall thickness of 0.515 inches (with stretches made of thicker pipeline when necessary, such as segments installed via road bore or horizontal directional drilling).

Additionally, the mainline would be coated with 14 mils of epoxy bonding and stretches installed via trenchless methods would be coated with 50 mils. The new pipeline is expected to initially transport 760,000 barrels per day again. Although, its full design capacity will be capable of transporting 844,000 barrels per day.

When the replacement project was announced in August 2017, Enbridge reported that the  first segment would be built in the Canadian section of the project, comprising about a quarter of the total length, starting at the line’s origin in Alberta.

Only a month after the project announced it would be launching construction, Line 3 hit its first hurdles in Minnesota where some state officials said that Enbridge hadn’t established a need for its Line 3 Replacement Project.

At the time, the project still required two approvals from the state of Minnesota: a certificate of need and a route permit. In parts of Minnesota and Wisconsin, Enbridge planned to reroute the line along existing pipeline and electric transmission line rights-of-way.

According to the Minnesota Department of Commerce, a market analysis conducted by London Economics International indicated that Minnesota refineries and those elsewhere in the region had been operating at high utilization, meaning that the limitations on Line 3 are not adversely affecting operations in the region. The analysis at the time predicted that demands in the region wouldn’t likely grow in the long term.

In October, Enbridge filed with Minnesota's Public Utilities Commission, calling the state’s assessment of the situation “flawed,” and that it "failed to account for the negative economic impact to Minnesota if Line 3 were to be shut down."

“This is an essential project for Minnesotans that will ensure environmental protection of our important natural resources, as well as ensure the safe transportation of crude oil to refineries in Minnesota and neighboring states,” Guy Jarvis, Enbridge Executive Vice President in charge of liquid pipelines, told CBS Minnesota at the time.

By April of the following year, Minnesota administrative law Judge Ann O’Reilly recommended that, if the Enbridge Line 3 replacement were to move forward, the new pipeline follows the route of the old, rather than the company’s preferred route, as that way travels near the headwaters of Mississippi River.

The judge’s recommendation that the line replacement follow its current course—which shares space with five other lines from Alberta—would lower the environmental risks, along with preventing the abandonment of nearly 300 miles of pipeline.

At the time, Enbridge had already begun construction in Canada and Wisconsin.

In June, Minnesota’s Public Utilities Commission voted unanimously to approve the Line 3 replacement project a day after questioning company officials about the necessity of the project.

Opponents of the pipeline project gathered at the PUC meetings to call for its rejection, though an administrative law judge and PUC staff had already recommended its approval, with certain stipulations. The PUC’s five commissioners implied early in a meeting that they would approve a certificate of need, but the permit could come with strings attached.

The permit comes with stipulations that Enbridge establish a trust fund to bankroll the proper decommissioning of the new pipeline when it reaches the end of its service life decades from now, and that the company remove the old pipeline where property owners request that it do so, a concession the company had already promised.

By August, a pair of environmental groups challenged the approval of the Line 3, arguing that the environmental impact statement approved earlier that spring was insufficient. Specifically, the two groups argued that the EIS for the project did not adequately account for potential spills and did not take into account a survey related to tribal matters. Some tribal leaders in Minnesota also expressed concerns about the possibility of the pipeline being routed on tribal lands.

Final Permit

Following years of complications and extensive reviews, the Line 3 replacement project can finally begin construction efforts in Minnesota after receiving its last required permit.

“Construction can now begin,” Enbridge spokesperson Juli Kellner said in a statement. While it wasn’t specified when Enbridge would launch its construction efforts, letters issued to landowners along the route earlier in November, noting that they could expect construction to start on Nov. 30, and expects that work will take about nine months.

“This is the culmination of six years of evidence and science-based review of the project,” Kellner said. “Line 3 is poised to provide significant economic benefits for counties, small businesses, Native American communities, and union members—bringing 4,200 family-sustaining, mostly local construction jobs, millions of dollars in local spending and additional tax revenues at a time when Northern Minnesota needs it most.”

However, the Red Lake and White Earth Bands of Chippewa tribes requested that the PUC stay its approval of the project, pointing out that the influx of construction workers would put residents along the route at higher risk of COVID-19. Currently, a consolidated appeal made by environmental and tribal groups is pending before the Minnesota Court of Appeals.

“It’s unfortunate that Minnesota is issuing permits for an unnecessary tar sands pipeline during a global pandemic that is particularly hitting hard Native and non-native communities and fragile healthcare systems along the route even though the appeals process is still underway,” Winona LaDuke, Executive Director of Honor the Earth, said in a statement. “This is just reckless and irresponsible government that will have consequences for all sides.”

According to Enbridge, during construction the pipeline will bring a $2 billion boost to the Minnesota economy, with $1.5 billion of that in Enbridge spending alone. Additionally, the project is also slated to bring about $334 million in payroll to workers (about 50% of that to local workers), and a $162 million construction-related gain for local economies, as a result of non-local workers in Minnesota, through purchase of local products/materials and use of local hotels, restaurants and services.


Tagged categories: Corrosion; Government; Infrastructure; Infrastructure; NA; North America; Oil and Gas; Ongoing projects; Pipelines; Program/Project Management; Project Management; Protective coatings

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