Recent air pollution research in Canada and other jurisdictions was summarized by Health Canada in October 2003 in its report Human Health Effects of Fine Particulate Matter, which has informed standards-setting deliberations of the CCME. Research in British Columbia has been ongoing since at least 1990 . The BC Lung Association has commissioned work in this field, including a 2003 analysis by Dr. David Bates and others, Health and Air Quality 2002—Phase 1. The second phase of this report was to deal with health effects of fine particulates in northern BC communities, where biomass combustion is arguably the most important source. Ray Copes and Catherine Elliott estimated mortality in northern BC in their report [http://www.pgairquality.com/uploads/files/pdf/ElliottAndCopes_ReportREMortality.pdf]