Draft permits would require Keetac meet sulfate standard by 2030

Draft permits would require Keetac meet sulfate standard by 2030

KEEWATIN — Minnesota regulators, who again declined a request by an Iron Range taconite mine to allow higher sulfate levels in a downstream lake, have drafted two permits requiring the facility to meet the state sulfate standard for wild rice waters in five years. The draft permits released by the Minnesota Pollution Control Agency earlier this month require water discharged from U.S. Steel’s Keetac iron ore mine and tailings basin to be treated…