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| Rule: 17.8.403 | Prev Up Next | |
| Rule Title: EXEMPTIONS | ||
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| Department: | ENVIRONMENTAL QUALITY, DEPARTMENT OF | |
| Chapter: | AIR QUALITY | |
| Subchapter: | Stack Heights and Dispersion Techniques | |
| Latest version of the adopted rule presented in Administrative Rules of Montana (ARM): | ||
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17.8.403 EXEMPTIONS (1) The requirements of ARM 17.8.402 do not apply to stack heights in existence or dispersion techniques implemented on or before December 31, 1970, except when pollutants are being emitted from such stacks or using such dispersion techniques by stationary sources (as defined by ARM 17.8.801(28)) that were constructed or reconstructed or for which major modifications (as defined in ARM 17.8.801(20)) were carried out after December 31, 1970. History: 75-2-111, 75-2-203, MCA; IMP, 75-2-203, MCA; NEW, 1986 MAR p. 1021, Eff. 6/13/86; AMD, 1995 MAR p. 535, Eff. 4/14/95; TRANS, from DHES, 1996 MAR p. 2285. |
| MAR Notices | Effective From | Effective To | History Notes |
|---|---|---|---|
| 4/14/1995 | Current | History: 75-2-111, 75-2-203, MCA; IMP, 75-2-203, MCA; NEW, 1986 MAR p. 1021, Eff. 6/13/86; AMD, 1995 MAR p. 535, Eff. 4/14/95; TRANS, from DHES, 1996 MAR p. 2285. |
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