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| Rule: 17.8.805 | Prev Up Next | |
| Rule Title: AMBIENT AIR CEILINGS | ||
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| Department: | ENVIRONMENTAL QUALITY, DEPARTMENT OF | |
| Chapter: | AIR QUALITY | |
| Subchapter: | Prevention of Significant Deterioration of Air Quality | |
| Latest version of the adopted rule presented in Administrative Rules of Montana (ARM): | ||
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17.8.805 AMBIENT AIR CEILINGS (1) No concentration of a pollutant shall exceed the concentration permitted under either the applicable secondary or primary national ambient air quality standard, whichever concentration is lowest for the pollutant for a period of exposure. History: 75-2-111, 75-2-203, MCA; IMP, 75-2-202, 75-2-203, 75-2-204, MCA; NEW, 1993 MAR p. 2919, Eff. 12/10/93; TRANS, from DHES, 1996 MAR p. 2285. |
| MAR Notices | Effective From | Effective To | History Notes |
|---|---|---|---|
| 12/10/1993 | Current | History: 75-2-111, 75-2-203, MCA; IMP, 75-2-202, 75-2-203, 75-2-204, MCA; NEW, 1993 MAR p. 2919, Eff. 12/10/93; TRANS, from DHES, 1996 MAR p. 2285. |
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