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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