The Government of Canada?s commitment to reducing air pollution in Canada was augmented this week with the addition of the key pollutants that make up smog to Schedule 1 of the Canadian Environmental Protection Act, 1999. The announcement concerning the precursor gases that make up particulate matter less than or equal to 10 microns (PM10) and Ozone and its precursors was made by the Honourable David Anderson, Minister of the Environment and the Honourable Anne McLellan, Minister of Health.
http://www.ec.gc.ca/press/2003/030704_n_e.htm