This 2004 document summarizes the findings of the Canada-U.S. subcommittee on Scientific Cooperation concerning the transboundary transport of particulate matter (PM) and PM precursors between the two countries.
See the U.S.-Canada Air Quality Agreement for related information.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Canada-U.S. Transboundary PM Science Assessment (PDF)(150 pp, 14 MB)