Fig. 4. Maximum annual concentration at ground level and Quebec environmental standards for particulate matter (PM), sulfur dioxide (SO2), and nitrogen oxides (NOx) when coal or coal and tires was used as fuel.
Fig. 4. Maximum annual concentration at ground level and Quebec environmental standards for particulate matter (PM), sulfur dioxide (SO2), and nitrogen oxides (NOx) when coal or coal and tires was used as fuel.