An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Clean Air Markets

Canada-U.S. Border Air Quality Strategy Border Reports

View reports on two airshed pilot studies that explored the human health effects of air pollution in the United States and Canada, plus a report on the feasibility of transboundary emissions cap and trade program.

View Canada-U.S. Border Air Quality Strategy Projects for more information about these projects.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Great Lakes Basin Airshed Management Framework (PDF)(66 pp, 849 K)
Maintaining Air Quality in a Transboundary Air Basin: Georgia Basin - Puget Sound (PDF)(75 pp, 3 MB)
Emissions Cap and Trading Feasibility Study (PDF)(136 pp, 2 MB)