An environmental group sued owners of an Idaho mine in federal court, saying they're violating the Clean Water Act by discharging illegal levels of arsenic into a Boise River tributary.
The Idaho Conservation League said Monday that Canadian-based Atlanta Gold Inc. has never complied with a 2009 Environmental Protection Agency permit governing discharges from its property.
It's an old problem, with records showing arsenic-laden water flowing from the mine opening decades before Atlanta began exploring here in the mid-1990s.
The Idaho Conservation League sued Atlanta Gold in 2005, alleging illegal discharges but settling the claim after Atlanta agreed to remedy the situation.
ICL activist Justin Hayes says that hasn't happened, so his group sued again.
Atlanta Gold Chief Executive Bill Baird in Toronto had yet to see the complaint.