Enbridge will pay more than $7 million to address environmental damage from building the Line 3 oil pipeline across northern Minnesota last year, and it now faces a criminal charge related to a breached aquifer where groundwater continues to flow.
State environmental regulators, the Fond du Lac Band of Lake Superior Chippewa and Minnesota Attorney General Keith Ellison announced the new penalties and agreements Thursday. They said they want to hold the company accountable for violating state and tribal water and environmental rules, but some also acknowledged limited authority to act.
The new payments are in addition to the $3 million the Canadian oil pipeline operator was forced to pay in a previous enforcement action related to some of the same problems, bringing total payments to more than $11 million. The new payments, which go to the tribe and two state agencies, include fines but mostly will go to environmental projects and set-aside financial assurances to cover future work.
The Line 3 replacement pipeline was one of the largest construction projects in recent state history and generated fierce environmental opposition because it crossed more than 200 streams and rivers and affected more than 700 acres of wetlands.
In a joint press release with the state Department of Natural Resources (DNR), the Minnesota Pollution Control Agency (MPCA) said Enbridge violated a series of regulations and requirements last year that involved releasing drilling mud into water at 12 locations, and discharging construction storm water into wetlands.
"We are committed to protecting Minnesota's wetlands and streams and will continue to monitor the company's ongoing work to return the site to its preconstruction condition," MPCA Commissioner Katrina Kessler said in the news release.
The DNR said it finalized enforcement agreements to address three previously confirmed aquifer breaches, one of which affected the Fond du Lac Band's reservation near Cloquet.
It's very difficult to stop groundwater from flowing from a punctured aquifer. While Enbridge has stopped the release of groundwater just outside the Fond du Lac reservation, it continues to flow at the other two sites, albeit at much lower volumes: 20 gallons per minute at the LaSalle Creek site and less than 1 gallon per minute at the Clearbrook location.