Mich. Admin. Code R. 336.2803 - Ambient air increments

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.

Notes

Mich. Admin. Code R. 336.2803

2006 AACS; 2012 AACS