The Environmental Protection Agency Office of Inspector General has opened an investigation into the agency's handling of a crucial pollution permit for Minnesota's first copper mine after a retired agency attorney raised questions about the episode.
The investigation was announced June 12, the same day the Environmental Protection Agency (EPA) released documents related to the water quality permit requested by several parties, including the Minnesota-based advocacy group WaterLegacy and U.S. Rep. Betty McCollum, D-Minn.
Release of the documents shows that written comments by EPA regulators, challenging key parts of the permit, were never formally submitted for the public record and were never sent to officials at the Minnesota Pollution Control Agency (MPCA). Instead, the comments were read to MPCA staff over the telephone last spring, a practice that the retired EPA attorney described as "bizarre."
The Star Tribune has also requested the documents, but the EPA hasn't yet provided them.
The documents relate to a crucial state water quality permit issued to PolyMet Mining, a Toronto-based minerals firm that wants to build a $1 billion copper-nickel mine in northeast Minnesota. After years of review, PolyMet cleared most of Minnesota's regulatory hurdles in late 2018. The newly released documents include seven pages of detailed criticism by EPA Region 5 staff in Chicago, which oversees Minnesota's enforcement of federal pollution laws, outlining deficiencies in the permit that the MPCA issued to PolyMet last December. It is the first time the EPA's official comments on the permit, which will regulate dangerous pollutants in effluent from the mine, have been made public.
The written comments note that the permit would "authorize discharges that would exceed Minnesota's federally-approved human health and/or aquatic life water quality standards for mercury, copper, arsenic, cadmium, and zinc." In one core passage, they said the permit lacked specific effluent limits, known as WQBELs, which are numeric limits on how much of a pollutant can be in the effluent pumped out a discharge pipe.
A retired EPA attorney from Boston, Jeffry Fowley, learned of the phoned-in comments from confidential sources in January and filed a complaint with the EPA's Office of Inspector General.
The sources told him EPA leadership in Region 5 were suppressing staff comments. Fowley has called it "serious improper conduct" and "unethical."