Chief Allan Adam filed a complaint against the Alberta Energy Regulatory Agency (AER) on Tuesday.
Allan Adam served notice of the lawsuit to the executive director of the provincial regulatory body, Laurie Pushor, who was present at the meeting organized by communities to raise their concerns about the Kearl mine leak on Tuesday.
None of the allegations have been proven in court.
The Athabasca Chipewyan First Nation is all the more angry against the AER that' ;she believes the spills have had a significant impact on resources such as groundwater, to the point where communities would live in fear of potential contamination.
Imperial had, however, affirmed that the spills had not damaged waterways or wildlife in the area.
During At a meeting organized Tuesday by the region's communities, some members felt that, because of its lack of diligence in this matter, the AER had broken the last bond of trust that existed between the public and it.
Kendrick Cardinal, president of the Fort Chipewyan Métis Nation, agrees. He hopes, however, that the AER will hold the tar sands industry accountable.
The spill of a mixture of 5.3 million liters of water and toxic chemicals was discovered in May 2022, but it was not made public until March 2023.
According to the Athabasca Chipewyan First Nation, three major leaks occurred between May 2022 and November 2023.