EPA chief: Colorado river hit by mine waste back to pre-spill quality

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EPA chief: Colorado river hit by mine waste back to pre-spill quality

EPA chief: Colorado river hit by mine waste back to pre-spill quality
DURANGO, Colo. (Reuters) - The water quality of a southwestern Colorado river rendered bright orange by toxic waste spewed from an abandoned gold mine one week ago has returned to pre-existing levels, the U.S. Environmental Protection Agency chief said on Wednesday.

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