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Rule Title: REVIEW OF SPECIFIED SOURCES FOR AIR QUALITY IMPACT
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Department: ENVIRONMENTAL QUALITY, DEPARTMENT OF
Chapter: AIR QUALITY
Subchapter: Preconstruction Permit Requirements for Major Stationary Sources or Major Modifications Locating Within Attainment or Unclassified Areas
 
Latest version of the adopted rule presented in Administrative Rules of Montana (ARM):

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17.8.1006    REVIEW OF SPECIFIED SOURCES FOR AIR QUALITY IMPACT

(1) For "stable" air pollutants (i.e., sulfur dioxide, particulate matter and carbon monoxide) , the determination of whether a source will cause or contribute to a violation of a national ambient air quality standard generally should be made on a case-by-case basis as of the proposed new source's startup date using the source's allowable emissions in an atmospheric simulation model (unless a source will clearly impact on a receptor which exceeds a national ambient air quality standard) .

(2) For sources of nitrogen oxides, the initial determination of whether a source would cause or contribute to a violation of the national ambient air quality standard for nitrogen dioxide should be made using an atmospheric simulation model assuming all the nitric oxide emitted is oxidized to nitrogen dioxide by the time the plume reaches ground level. The initial concentration estimates may be adjusted if adequate data are available to account for the expected oxidation rate.

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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