The U.S. Army Corps of Engineers has settled a lawsuit that will force it to disclose the amount of pollutants its dams are sending into American waterways for the first time in the agency’s history.  The legal settlement could have broad implications for the Corps’ hundreds of dams nationwide.  The Corps says in the settlement it will immediately notify the conservation group Columbia Riverkeeper of any oil spills among its eight dams in Oregon and Washington. The Corps also will apply to the EPA for pollution permits, something it has never done for the dams on the Columbia and Snake rivers.  The settlement was filed in U.S. District Court in Portland.  Columbia Riverkeeper says in the lawsuit that the Corps violated the Clean Water Act.