Exxon cleans up 4 Mont. spill sites

The Environmental Protection Agency and the state Department of Environmental Quality will assess whether the cleanup is adequate.

Tom Livers, the state agency’s deputy director, told The Billings Gazette that state standards require the cleanup to continue until it would be more harmful than beneficial to the environment.

So far, 46 sites have been identified for cleanup after about 1,000 barrels of oil leaked into the river, starting on July 1.

Exxon brought in International Bird Rescue of California to clean wildlife affected by the spill. Jay Holcomb with the rescue group says they have only had to treat three birds.