Agency action sets stage for removal work to begin next year by Kiewit Infrastructure West, in effort to restore water quality and ailing salmon population.

Kiewit would start $445M Klamath River work next year to take down four dams in Oregon and California after FERC and Interior Dept. sign off on key environmental review.

Big Calif.-Ore. dam removals, which triggered the Jan. 25 federal ruling on state clean-water okays, are proceeding to contract.

Removal of four dams on the Klamath River in California by 2020 will close the book on one of the most intractable issues in Western environmental management.