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ROB CHANEY The U.S. Environmental Protection Agency adopted a new standard for selenium waste in Montana’s Kootenai River and Koocanusa Reservoir on Thursday, after the Legislature dropped plans to revoke the state rule. “EPA’s action is based on a thorough technical review of the State’s submission and a determination that the adopted standards are based on sound science and consistent with the Clean Water Act,” EPA spokeswoman Laura Flynn Jenkins wrote in an emailed statement. “Montana’s revised standards will strengthen ongoing efforts to a...

Montana adopts tougher water quality standards for Lake Koocanusa Copyright 2021 Scripps Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Dennis Bragg/MTN News file Lake Koocanusa in northwest Montana and last updated 2020-12-15 13:10:47-05 HELENA — Montana has formally adopted tougher water quality standards for Lake Koocanusa, addressing selenium contamination in the Kootenai River watershed. The Montana Department of Environmental Quality (DEQ) has spent years analyzing selenium in the reservoir, which extends from the Libby ...