The Line 3 pipeline is an
oil pipeline
Pipeline transport is the long-distance transportation of a liquid or gas through a system of pipes—a pipeline—typically to a market area for consumption. The latest data from 2014 gives a total of slightly less than of pipeline in 120 countr ...
owned by the Canadian
multinational Enbridge
Enbridge Inc. is a multinational pipeline and energy company headquartered in Calgary, Alberta, Canada. Enbridge owns and operates pipelines throughout Canada and the United States, transporting crude oil, natural gas, and natural gas liquids. ...
. Operating since 1968, it runs from
Hardisty, Alberta
Hardisty is a town in Flagstaff County in east-central Alberta, Canada. It is approximately from the Saskatchewan border, near the crossroads of Highway 13 and Highway 881, in the Battle River Valley. Hardisty is mainly known as a pivotal p ...
, Canada to
Superior, Wisconsin
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, United States.
Concerns about the safety of the pipeline led Enbridge to reduce its capacity. Over its history, the pipeline has been the source of millions of gallons of
oil spill
An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into ...
s, including a
1991 oil spill in
Grand Rapids, Minnesota
Grand Rapids is a city in Itasca County, Minnesota, United States, and it is the county seat. The population is 11,126 according to the 2020 census. The city is named for the long rapids in the Mississippi River which was the uppermost limit ...
, that was the worst inland oil spill in U.S. history. In 2014 Enbridge proposed the construction of a new pipeline segment along a different route in
Minnesota
Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the List of U.S. states and territories by population, 22nd most populous, with over 5.75 million residents. Minne ...
which would increase the volume of oil that could be transported.
The replacement pipeline has been completed in
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota ...
,
Wisconsin
Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...
,
North Dakota
North Dakota () is a U.S. state in the Upper Midwest, named after the indigenous Dakota Sioux. North Dakota is bordered by the Canadian provinces of Saskatchewan and Manitoba to the north and by the U.S. states of Minnesota to the east, S ...
,
and
Minnesota
Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the List of U.S. states and territories by population, 22nd most populous, with over 5.75 million residents. Minne ...
. Permitting and construction of the new pipeline has met with
resistance from
Native American communities and
climate justice
Climate justice is a concept that addresses the just division, fair sharing, and equitable distribution of the burdens of climate change and its mitigation and responsibilities to deal with climate change. "Justice", "fairness", and "equity" ar ...
groups.
History
The original Line 3 pipeline began operating in 1968, initially owned by the Lakehead Pipeline Company.
The 34" wide, 1031-mile pipeline transports crude oil from
Hardisty, Alberta
Hardisty is a town in Flagstaff County in east-central Alberta, Canada. It is approximately from the Saskatchewan border, near the crossroads of Highway 13 and Highway 881, in the Battle River Valley. Hardisty is mainly known as a pivotal p ...
, to
Superior, Wisconsin
, native_name_lang = oj
, nickname =
, total_type =
, motto =
, image_skyline = Tower Avenue.jpg
, imagesize =
, image_caption = Downtown Superior
, ima ...
. The pipeline was not tested for flaws in its entirety until after 1976.
Oil spills
From the 1970s until the 1991 spill, the Line 3 pipeline suffered 24 leaks due to the same seam failure
and was the source of 16 "large oil spills" resulting in four million gallons of oil spilled.
Officials with the
Minnesota Pollution Control Agency estimated that a total of 5.7 million gallons had spilled from the Lakehead line from 1971 to 1992.
The Line 3 pipeline was the origin of a 1.3 million gallon oil spill in
Argyle in 1973.
On March 3, 1991, the
Line 3 pipeline ruptured in a wetland near
Grand Rapids, Minnesota
Grand Rapids is a city in Itasca County, Minnesota, United States, and it is the county seat. The population is 11,126 according to the 2020 census. The city is named for the long rapids in the Mississippi River which was the uppermost limit ...
, spilling 1.7 million gallons of crude oil into the
Prairie River, a tributary of the
Mississippi River
The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it ...
. It was the largest inland oil spill in the history of the United States of America. At the time of the 1991 spill, the pipeline carried 22 million gallons of oil every day.
Expansion and new route

Structural deformities, including numerous cracks and holes have developed along the pipeline over time.
Resulting concerns about the safety of the pipeline have led Enbridge to reduce the amount of oil transported daily and propose the construction of a new pipeline.
Due to concerns of the aging pipeline, and its leaks and spills, in 2014, Enbridge announced plans to build a replacement Line 3 pipeline.
That multi-billion dollar project would allow Enbridge to restore their historic operating capacity and move nearly 800,000 barrels of oil per day.
By 2016, governing bodies in Canada,
North Dakota,
and Wisconsin
had approved their segments of the pipeline. Construction of the new Line 3 was completed everywhere but Minnesota by November 2020.
The permitting process has been more complicated in Minnesota where climate justice organizations, Native American groups, and government agencies have resisted the project. Enbridge agreed to a new route for the replacement line, avoiding more sensitive watersheds and some Native American reservations. In 2018, the
Minnesota Public Utilities Commission (PUC) solicited public input about the project.
Most feedback they received opposed the pipeline.
Of the nearly 70,000 individual comments submitted, 68,244, or 94%, were in opposition.
Nevertheless, in June 2018 the PUC approved Enbridge's modified route and granted the Certificate of Need and Route Permit, both necessary permits for the project.
As of December 2020, Minnesota state and federal regulators had granted Enbridge all of the permits required to construct the last stretch of the Line 3 pipeline through Minnesota.
The permits for this project have been consistently contested by Indigenous communities,
environmental justice
Environmental justice is a social movement to address the unfair exposure of poor and marginalized communities to harms from hazardous waste, resource extraction, and other land uses.Schlosberg, David. (2007) ''Defining Environmental Justice ...
organizations, and the Minnesota Department of Commerce. Although several of the pipeline's main permits were still facing appeals in court,
regulatory agencies had granted the remaining permits to Enbridge to begin construction by November 2020.
Enbridge began construction of the new Line 3 oil pipeline across northern Minnesota in December 2020, shortly after final permits were issued. The
Biden administration
Joe Biden's tenure as the List of presidents of the United States, 46th president of the United States began with Inauguration of Joe Biden, his inauguration on January 20, 2021. Biden, a Democratic Party (United States), Democrat from Delaw ...
supported the pipeline. However, the pipeline still faced significant resistance until its completion in September 2021. The pipeline expansion became operational on 1 October 2021.
Ongoing opposition following final permit approval

Several parties, including Ojibwe tribes, environmental organizations, and the Minnesota Department of Commerce, are still appealing the project in court.
In March 2021, the Minnesota Court of Appeals heard testimony from Enbridge, the PUC, and appealing parties. The plaintiffs brought forth several challenges to the pipeline, most notably questioning whether the energy transfer company had ever proved that there would be enough continued demand for tar sands oil to justify construction of Line 3.
A ruling is expected on the appeals in June 2021 which could lead to a revocation of Enbridge's permits for construction.
Outside the courts, Indigenous-led groups have
organized opposition to Line 3, delaying construction along the pipeline route through non-violent direct action and protest. Groups like the Giniw Collective, Camp Migizi, Honor the Earth, and the RISE Coalition staged dozens of protests attended by thousands of people in the first four months of construction. As of April 2021, more than 200 people had been arrested for protesting along the pipeline route. At the time of the pipeline's completion, nearly 900 people were facing charges related to pipeline resistance in northern Minnesota.
On June 7, 2021, protesters referring to themselves as
water protectors
Water protectors are activists, organizers, and cultural workers focused on the defense of the world's water and water systems. The ''water protector'' name, analysis and style of activism arose from Indigenous communities in North America dur ...
organized a gathering at the
White Earth Indian Reservation
The White Earth Indian Reservation ( oj, Gaa-waabaabiganikaag, "Where there is an abundance of white clay") is the home to
the White Earth Band, located in northwestern Minnesota. It is the largest Indian reservation in the state by land area. T ...
. The gathering, attended by "around 2,500 people", culminated in two direct actions. Over 200 protesters occupied an Enbridge pumping station and barricaded access. Subsequently, police in riot gear began making arrests. 247 people were arrested. 68 were released after receiving citations for unlawful assembly and public nuisance while another 179 were charged with trespassing.

The
Equestrian statue of Andrew Jackson in
Lafayette Square just to the north of the
White House
The White House is the official residence and workplace of the president of the United States. It is located at 1600 Pennsylvania Avenue Northwest, Washington, D.C., NW in Washington, D.C., and has been the residence of every U.S. preside ...
was vandalized with the words "Expect Us" on
Indigenous Peoples' Day
Indigenous Peoples' Day is a holiday in the United States that celebrates and honors indigenous American peoples and commemorates their histories and cultures. It is celebrated across the United States on the second Monday in October, and is a ...
(also
Columbus day
Columbus Day is a national holiday in many countries of the Americas and elsewhere, and a federal holiday in the United States, which officially celebrates the anniversary of Christopher Columbus's arrival in the Americas on October 12, 1492 ...
), Monday, October 11, 2021. Protesters had been chanting "respect us or expect us" in response to protesting the Line 3 pipeline in Minnesota that runs through lands owned by Indigenous tribes who are concerned that the pipeline could spill and ruin the land they use to hunt, fish, gather, and farm.
Debate in Minnesota
Opposing arguments
Climate change

Much of the resistance to the Line 3 project comes from concerns over climate change. Climate justice groups such as the North Star Chapter of the
Sierra Club
The Sierra Club is an environmental organization with chapters in all 50 United States, Washington D.C., and Puerto Rico. The club was founded on May 28, 1892, in San Francisco, California, by Scottish-American preservationist John Muir, w ...
, MN350, and
Honor the Earth have campaigns to "Stop Line 3." The
Environmental Impact Statement (EIS), which was conducted by the
Minnesota Department of Commerce
The Minnesota Department of Commerce is the governmental agency in the U.S. State of Minnesota
Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the List of U.S. ...
, explains how the new Line 3 pipeline would contribute to
deforestation
Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then land conversion, converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban area, urban ...
, increase risk of pollution to Minnesota's pristine water ecosystems and
wild rice
Wild rice, also called manoomin, Canada rice, Indian rice, or water oats, is any of four species of grasses that form the genus ''Zizania'', and the grain that can be harvested from them. The grain was historically gathered and eaten in both ...
beds, and generate the
greenhouse gas
A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor (), carbon dioxide (), met ...
ses that contribute to climate change.
In fact, a study authored by over a dozen climate justice organizations found that the greenhouse gas emissions from constructing the new Line 3 pipeline would be equivalent to building 50 new coal-fired power plants. The EIS estimated that the
social cost of carbon
The social cost of carbon (SCC) is the marginal cost of the impacts caused by emitting one extra tonne of greenhouse gas (carbon dioxide equivalent) at any point in time, inclusive of 'non-market' impacts on the environment and human health. Th ...
from those emissions would total more than $120 billion over 30 years. The MN Department of Commerce under Governor
Mark Dayton
Mark Brandt Dayton (born January 26, 1947) is an American politician who served as the 40th governor of Minnesota from 2011 to 2019. He was a United States Senator for Minnesota from 2001 to 2007, and the Minnesota State Auditor from 1991 to 1 ...
formally denounced the proposed Line 3 project on environmental grounds.
As of October 2020, that appeal had been renewed twice by Governor Tim Walz's administration.
In February 2021, U.S. Representative
Ilhan Omar
Ilhan Abdullahi Omar (born October 4, 1982) is an American politician serving as the U.S. representative for since 2019. She is a member of the Democratic–Farmer–Labor Party. Before her election to Congress, Omar served in the Minnesot ...
called on
President Biden to stop the construction of the pipeline: "The decision that U.S. entities make on Line 3 is a decision made for the entire world, and for all coming generations of humanity. I urge you to make the one decision supported by the scientific consensus on climate change: Stop Line 3." A press release cited how the pipeline would "add five times as much greenhouse gas annually as Minnesota transportation produced in total in 2016."
Oil spills
Many people are concerned about potential
oil spill
An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into ...
s along Line 3.
Among other accidental releases, the original Line 3 pipeline was responsible for the
largest ever inland oil spill in the U.S. In 1991, 1.7 million gallons of oil ruptured from Line 3 in
Grand Rapids, MN. Enbridge was also responsible for the 2010
Kalamazoo River oil spill
The Kalamazoo River oil spill occurred in July 2010 when a pipeline operated by Enbridge (Line 6B) burst and flowed into Talmadge Creek, a tributary of the Kalamazoo River. A break in the pipeline resulted in one of the largest inland oil spills ...
in Michigan.
Clean up of that spill cost over a billion dollars and took nearly a decade.
In total, Enbridge has overseen over 800 oil spills between 1999 and 2010.
The resulting pollution has adversely affected the economy, public health, and the environment in Michigan. Enbridge has reassured the public that pipeline safety is their primary goal, and they employ technology to monitor their pipelines and train employees on emergency response.
While big oil spills (>238 barrels of oil) have decreased in recent years,
activists in Minnesota feel that the potential for even one serious spill is too much of a risk.
The Environmental Impact Statement of Line 3 acknowledges that some accidental release of oil is inevitable and that serious oil spills are possible.
Ojibwe treaty rights

Some Native American communities in Minnesota have opposed the project on the basis of
treaty rights
In Australia, Canada, New Zealand and the United States the term treaty rights specifically refers to rights for indigenous peoples enumerated in treaties with settler societies that arose from European colonization.
Exactly who is indigen ...
. Most of the land in northern Minnesota was ceded to the U.S. through treaties with
Ojibwe
The Ojibwe, Ojibwa, Chippewa, or Saulteaux are an Anishinaabe people in what is currently southern Canada, the northern Midwestern United States, and Northern Plains.
According to the U.S. census, in the United States Ojibwe people are one of ...
peoples throughout the 1800s. Those treaties established
reservations, as well as land use rights for Ojibwe people to hunt, fish, and harvest
manoomin (wild rice) on the rest of the ceded territory. The proposed route for the new Line 3 pipeline would cross through that protected land.
Several Ojibwe communities have said that construction of the pipeline would violate treaty rights by disrupting and threatening the resources promised to them on their ancestral land.
The Environmental Impact Statement acknowledges that construction of Line 3 would disrupt Native historic and cultural sites such as burial grounds. However, a complete Traditional Cultural Properties Survey has not been conducted of the proposed route.
Five Ojibwe bands have resisted the pipeline replacement project in court. The
White Earth,
Red Lake Red Lake may refer to:
Lakes Australia
*Red Lake (Western Australia)
Croatia
*Red Lake (Croatia) (Crveno jezero)
Romania
*Red Lake (Romania) (Lacul Roşu)
United States
* Red Lake (Arizona–New Mexico)
* Red Lake (Orlando), Florida
*Red Lake ( ...
,
Mille Lacs,
Fond du Lac, and
Leech Lake bands all opposed the pipeline and held status as intervening parties against the project in the PUC's initial permit deliberations. After the PUC's June 2017 approval, the White Earth and Red Lake bands were part of a joint appeal of the Certificate of Need, while the Mille Lacs, White Earth, and Red Lake bands appealed the Environmental Impact Statement.
In August 2018, the Fond du Lac band signed a right-of-way agreement with Enbridge, allowing the company to route the pipeline through their reservation. Ahead of that decision, Tribal council chairman Kevin Dupuis, Sr., said “as a sovereign nation, we are confounded that we are being forced to choose between two evils as both routes pass through our lands,” either through the reservation or ceded treaty land. The Leech Lake Band also stepped back from formal appeals in December 2018 when Enbridge agreed to remove the old pipeline from their reservation if construction of the new pipeline begins.
Drug and sex trafficking
Native activists and allies are bringing awareness to the connection between fossil fuel infrastructure projects like Line 3 and increased drug and sex trafficking in and around Native American reservations.
While oil pipelines like Line 3 are being built, the construction workers stay in concentrated, temporary housing along the route, often known as “man camps.” The high wages and social isolation in man camps lead to increased drug use, as well as violence perpetrated by employees on the surrounding Native communities. In 2019, Native and climate justice activists held a “March on Enbridge to Protect the Sacred,” at the Enbridge terminal in Clearbrook, Minnesota. They demanded an end to the Line 3 project citing, among other things, “the direct link between the fossil fuel industry and
Missing and Murdered Indigenous Women and Relatives.” The Environmental Impact Statement on Line 3 acknowledges that connection as well, saying “The addition of a temporary, cash-rich workforce increases the likelihood that sex trafficking or sexual abuse will occur.” Under the EIS, Enbridge was required to prepare a Human Trafficking Prevention Plan for the project. Enbridge's plan has been critiqued, however, as a step made more to follow procedure than a true commitment to ending violence by their employees.
Groups of Native activists and climate justice organizers maintain opposition to the pipeline over the potential for increased violence and drug trafficking along the proposed pipeline route.
Pipeline "abandonment"

The agreement between Enbridge and the Leech Lake Band centers on another debate, namely: what will happen to the infrastructure of the old Line 3 pipeline if the new one is built? Enbridge proposed a process they call "deactivation."
Many who oppose the project call this "abandonment." Enbridge explains deactivation of a pipeline as a 5 step process: remove the oil, clean the pipe, disconnect it from facilities, put corrosion controls in place, and then leave the pipe in the ground.
Minnesotans for Pipeline Cleanup, an organization opposed to Line 3, has expressed concerns about the potential for pollutants to remain after the clean up.
Many landowners along the old route worry that they will bear the financial burden for the decommissioned pipe, either through costs of cleanup, removal, or lost property value.
Both the Pipeline Abandonment Report from Minnesotans for Pipeline Cleanup and the Chippewa Cumulative Impact Statement, written to supplement the EIS, mention that Line 3 would be the first pipeline ever to be decommissioned in MN, and worry about what sort of precedent that might set.
Arguments in support
Job creation
Supporters of Line 3 cite job creation as a key reason to build the pipeline. A large study published by the University of Minnesota Duluth in 2017 claimed that the Line 3 Replacement Project would create thousands of jobs. However, later that year, investigative journalists uncovered that a business group funded by Enbridge, APEX, had financed the study, and that data inputs for it were provided by Enbridge themselves. In the end, a UMD Professor behind the research severed the school's ties with APEX. While there might not be significant long term job creation, supporters assert that even some temporary employment would be a key source of income for numerous families in Minnesota. The original EIS also distinguished between long and short term jobs, but came to different conclusions saying, "Based on the small number of permanent jobs, it is likely that operation of the pipeline would result in no to negligible impact on the per capita household income, median household income, or unemployment rates in the ROI (region of interest.)”
The pipeline's possible impact on jobs in Minnesota remains contested.
Tax revenue
Line 3 supporters argue that counties along the proposed route will benefit from the revenue of Enbridge's property taxes. In the first year of the new pipeline's operations, Enbridge has been projected to pay $19.5 million in property taxes along the route.
That number would increase over time.
Those opposed to the pipeline hold some reservations about the promise of that revenue, however, citing lawsuits in which Enbridge claimed that they had been overtaxed, and left counties across Minnesota in debt for tens of millions of dollars.
Use for oil industry
Construction of the Line 3 pipeline would help the Canadian oil industry increase their production and stabilize prices. Enbridge has argued that Line 3 would help meet the demand of Minnesota's oil refineries, and they're not the only company hoping the pipeline is built.
Line 3 is seen as key to the Canadian oil industry.
Difficulty transporting oil out of Alberta has led to production cuts and price discounting.
Thousands of Canadians have lost their jobs in oil infrastructure due to instability in Alberta's oil sands economy. Additionally, companies which are unable to ship their product through pipelines have considered expanding train shipments of oil.
Recent studies have highlighted that train transportation of oil results in more regular spills than transport by pipe.
In his endorsement of Line 3, the
Prime Minister of Canada
The prime minister of Canada (french: premier ministre du Canada, link=no) is the head of government of Canada. Under the Westminster system, the prime minister governs with the confidence of a majority the elected House of Commons; as suc ...
,
Justin Trudeau
Justin Pierre James Trudeau ( , ; born December 25, 1971) is a Canadian politician who is the 23rd and current prime minister of Canada. He has served as the prime minister of Canada since 2015 and as the leader of the Liberal Party since ...
, supported this argument:
Enbridge estimates that Line 3 would replace more than 10,000 rail cars transporting oil every day.
The group Minnesotans for Line 3 says that by approving the pipeline, government regulators could ensure safer transport of millions of barrels of oil a year.
The Minnesota Department of Commerce, in their testimony against Line 3, questioned these projections, claiming they fail to consider a variety of possible future demands for oil.
See also
*
List of oil pipelines
This is a list of oil pipelines.
Africa
* Chad–Cameroon pipeline – Chad–Cameroon
* Sudeth pipeline – South Sudan–Ethiopia (under construction)
* Transnet Pipelines – South Africa
* Sumed pipeline – Egypt
* Tazama Pipeline – Tanz ...
*
References
{{Canadian pipelines
Enbridge pipelines
Oil pipelines in North America
Environmentalism in Canada
Crude oil pipelines in the United States
Proposed pipelines in the United States
Oil pipelines in Minnesota
Oil pipelines in North Dakota
Oil pipelines in Wisconsin
Oil pipelines in Canada
Proposed pipelines in Canada
Pipelines in Alberta
Pipelines in Saskatchewan
Environmental justice
Environmental controversies
Indigenous peoples and the environment
Nonviolent occupation
Mississippi River
Water law in the United States
Environment of Minnesota
Indigenous rights in Canada
Climate change and society
Environmentalism in the United States