Description: This report, the 30th in a series, summarizes the state of ambient air quality in Ontario during 2000. It covers the measured levels of the six traditional contaminants consisting of ozone (O3), particulate matter (PM10 / PM2.5), sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO) and total reduced sulphur (TRS) compounds. For the first time, the ministry’s annual report contains data on ambient mercury (Hg) levels. The report also summarizes the results from the Air Quality Index (AQI) and Smog Alert programs for 2000. In addition, results for a selected number of VOCs are summarized and a perspective on the state of air quality in the Great Lakes Basin area is also presented. The main focus of the 2000 publication is to report in a timely manner on the state of Ontario’s ambient air quality.
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