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Air Emissions at Trail Operations

March, 2018

Teck is committed to the highest standards of environmental management and performance across our operations, projects and legacy properties. We work in highly regulated jurisdictions with stringent and rigorously applied environmental legislation and implement company-wide management standards focused on a range of issues from water management through to air quality.

Since the mid-1990s, Teck has invested over $1.5 billion to modernize the Trail facility to improve operation and environmental performance and has reduced emissions to air and water by over 95%.

Trail conducts routine air monitoring in Canada under Canadian regulations and all emissions meet applicable regulatory standards for substances including lead and arsenic, as well as sulphur dioxide, and particulates. For example, in 2017, the annual average lead in community air was 0.16 micrograms per cubic metre. This more than achieves our 2018 air quality goal of 0.2 micrograms per cubic metre, which was set by the Trail Health and Environment Committee through its public consultation in 2010, and was the most stringent in Canada at the time.

With respect to potential historical impacts, Teck has spent over US$85 million to date on a remedial investigation and feasibility study of the Upper Columbia River in Washington under U.S. EPA oversight. The investigation is intended to identify whether historical practices at Trail have caused unacceptable risks to human health or the environment. U.S. EPA has declined to require the additional air monitoring requested by Washington’s Department of Ecology as part of that study.

We are committed to completing the remedial investigation study to fully assess any potential unacceptable risks due to Trail Operations’ historic practices and, if necessary, take action to address them.

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As one of Canada’s leading mining companies, Teck is committed to responsible mining and mineral development with major business units focused on copper, zinc, and steelmaking coal, as well as investments in energy assets.