(1) In areas designated as Class I, II, or III, increases in pollutant concentration over the baseline concentration shall be limited to the following:
Pollutant
|
Maximum allowable increase
(micrograms per cubic meter)
|
Particulate matter:
PM-10, annual arithmetic mean ......................................4
PM-10, 24-hr maximum ...................................................8
Sulfur dioxide:
Annual arithmetic mean ...................................................2
24-hr maximum .................................................................5
3-hr maximum .................................................................25
Nitrogen dioxide:
Annual arithmetic mean ...................................................2.5
Particulate matter:
PM-10, annual arithmetic mean ....................................17
PM-10, 24-hr maximum .................................................30
Sulfur dioxide:
Annual arithmetic mean .................................................20
24-hr maximum ...............................................................91
3-hr maximum ...............................................................512
Nitrogen dioxide:
Annual arithmetic mean .................................................25
Particulate matter:
PM-10, annual arithmetic mean ....................................34
PM-10, 24-hr maximum .................................................60
Sulfur dioxide:
Annual arithmetic mean .................................................40
24-hr maximum .............................................................182
3-hr maximum ................................................................700
Nitrogen dioxide:
Annual arithmetic mean ................................................. 50
(2) For any period other than an annual period, the applicable maximum allowable increase may be exceeded during one such period per year at any one location.