Michigan Administrative Code
Department - Environmental Quality
Air Quality Division
Part 18 - PREVENTION OF SIGNIFICANT DETERIORATION OF AIR QUALITY
Section R. 336.2803 - Ambient air increments
Universal Citation: MI Admin Code R. 336.2803
Current through Vol. 24-04, March 15, 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.
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