On Tuesday a number of environmental groups appealed the air and water permits that have been approved for the proposed PolyMet copper-nickel mine.
The groups argue the Minnesota Pollution Control Agency ignored evidence that PolyMet intends to process more ore daily than called for in its air permit. They also argue the company’s water permit improperly allows pollutants to be discharged to groundwater.
The groups include the Minnesota Center for Environmental Advocacy, Friends of the Boundary Waters Wilderness, Center for Biological Diversity, and the Sierra Club. WaterLegacy filed its own appeal.
In a statement to CBS 3 a PolyMet spokeperson said, “All the permits we have received from the state are based on a mine plan that was the subject of a 14-year-long environmental review and permitting process. We have no other mine proposals. Our focus right now is on building the mine for which we have received permits.”
PolyMet is hoping to become Minnesota’s first copper-nickel mine.