| Volume of significant air emissions (tons) | |||
| 2019 | 2020 | 2021 | |
| NOx | 250 | 162 | 289 |
| SOx | 518 | 666 | 773 |
| Carbon Monoxide (CO) | N/A* | N/A* | 844 |
| Lead (Pb) | N/A* | N/A* | – |
| Mercury (Hg) | N/A* | N/A* | – |
| Volatile Organic Compounds (VOC) | – | – | – |
| Particulate Matter (PM) | 1.150 | 759 | 952 |
| Other standard categories of air emissions identified in regulations |
81 | 74 | – |
|
(*): data not collected for CO in 2019 and 2020 and not applicable for the operation for Pb and Hg. |
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