Mich. Admin. Code R. 336.2803
Current through Vol. 24-21, December 1, 2024
Rule 1803. In areas designated as class I, II, or III, increases in pollutant concentration over the baseline concentration shall be limited to all of the following:
Table 182
Ambient Air Increments
| Pollutant | Maximum Allowable Increase (micrograms per cubic meter) |
| CLASS I | |
| Particulate matter: | |
| PM-10, annual arithmetic mean | 4 |
| PM-10, 24-hour maximum | 8 |
| PM 2.5, annual arithmetic mean | 1 |
| PM 2.5, 24-hour maximum | 2 |
| Sulfur dioxide: | |
| Annual arithmetic mean | 2 |
| 24-hour maximum | 5 |
| 3-hour maximum | 25 |
| Nitrogen dioxide: | |
| Annual arithmetic mean | 2.5 |
| CLASS I | |
| CLASS II | |
| Particulate matter: | |
| PM-10, annual arithmetic mean | 17 |
| PM-10, 24-hour maximum | 30 |
| PM 2.5, annual arithmetic mean | 4 |
| PM 2.5, 24-hour maximum | 9 |
| Sulfur dioxide: | |
| Annual arithmetic mean | 20 |
| 24-hour maximum | 91 |
| 3-hour maximum | 512 |
| Nitrogen dioxide: | |
| Annual arithmetic mean | 25 |
| CLASS III | |
| Particulate matter: | |
| PM-10, annual arithmetic mean | 34 |
| PM-10, 24-hour maximum | 60 |
| PM 2.5, annual arithmetic mean | 8 |
| PM 2.5, 24-hour maximum | 18 |
| Sulfur dioxide: | |
| Annual arithmetic mean | 40 |
| 24-hour maximum | 182 |
| 3-hour maximum | 700 |
| Nitrogen dioxide: | |
| Annual arithmetic mean | 50 |
For any period other than an annual period, the applicable maximum allowable increase may be exceeded during 1 period per year at any 1 location.
Mich. Admin. Code R. 336.2803