The Canadian government will undertake an environmental review of Teck Resources’ Castle Mountain coal mine, a decision that comes after several environmental organizations, Indigenous groups and U.S. government agencies called for federal involvement in the project.

Wednesday’s announcement of a federal assessment follows the release of new U.S. Geological Survey research, which local environmental organization Wildsight says suggests British Columbia may need more stringent guidelines for selenium pollution to safely protect fish in a lake that spans the border with Montana.

As Teck plans to expand its coal mining operations in the Kootenays, the new U.S. report was seen by critics as further reason for Ottawa to undertake a federal impact assessment of the company’s Castle Mountain project.

For years, environmental groups have been ringing alarm bells over selenium pollution from Teck coal mines and, in particular, the risks to aquatic life. High concentrations of the element have been found to cause deformities and reproductive failure in fish.

Environment and Climate Change Canada Minister Jonathan Wilkinson considered “the potential for the proposed project to cause adverse effects within areas of federal jurisdiction, as well as cumulative effects in the Elk Valley and across provincial and national borders, in particular to fish, fish habitat, species at risk and Indigenous peoples,” Moira Kelly, a spokesperson for the minister, said in a statement.

Source: Ottawa to review Teck’s Castle Mountain coal mine in B.C. amid concerns over fish habitat | The Narwhal