Canada-wide Standards for Particulate Matter (PM) and Ozone: An Overview

摘要

Canada-wide Standards for Particulate Matter and Ozone were accepted inrnprinciple by the Canadian Council of Ministers of the Environment in November, 1999.rnAt the same time, Ministers asked that options to these Standards be prepared for theirrnconsideration prior to the Standards being brought forward for signing in June, 2000.rnThese options include a tighter time line for the Ozone Standard CWS (currently 2015),rnoptions for PM10 (the proposed Standard is for PM_(2.5) only) and a shorter timeline forrnreview (currently 2005). When finalized, the PM and Ozone Standards are expected tornset the air quality management agenda for Canada for the next decade, as well as form arnbasis for negotiation of transboundary air pollution agreements with the U.S. This paperrnpresentation describes what the Standards are, the considerations in selecting them, howrnthey compare with ambient standards elsewhere, how jurisdictions will report on progressrnand actions being taken to implement the Standards.