SPOKANE, Wash. (AP) – A conservation group is suing the U.S. Army Corps of Engineers, saying the agency is polluting the Columbia River with hot water, oil and toxic chemicals that are killing large numbers of endangered salmon. Columbia Riverkeeper filed the lawsuit Wednesday in federal courts in both eastern Washington and Oregon. The lawsuit contends four dams operated by the Army Corps on the Columbia River illegally discharged pollutants in violation of the Clean Water Act.
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