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Rule Title: VISIBILITY MODELS
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Department: ENVIRONMENTAL QUALITY, DEPARTMENT OF
Chapter: AIR QUALITY
Subchapter: Visibility Impact Assessment
 
Latest version of the adopted rule presented in Administrative Rules of Montana (ARM):

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17.8.1107    VISIBILITY MODELS

(1) All estimates of visibility impact required under this subchapter shall be based on those models contained in "Workbook for Plume Visual Impact Screening and Analysis" A-450/4-88 1988), incorporated by reference in ARM 17.8.1102. Equivalent models may be substituted if approved by the department.

History: 75-2-111, 75-2-203, MCA; IMP, 75-2-203, 75-2-204, 75-2-211, MCA; NEW, 1985 MAR p. 1326, Eff. 9/13/85; AMD, 1992 MAR p. 2741, Eff. 12/25/92; AMD, 1996 MAR p. 1844, Eff. 7/4/96; TRANS, from DHES, 1996 MAR p. 2285.


 

 
MAR Notices Effective From Effective To History Notes
7/4/1996 Current History: 75-2-111, 75-2-203, MCA; IMP, 75-2-203, 75-2-204, 75-2-211, MCA; NEW, 1985 MAR p. 1326, Eff. 9/13/85; AMD, 1992 MAR p. 2741, Eff. 12/25/92; AMD, 1996 MAR p. 1844, Eff. 7/4/96; TRANS, from DHES, 1996 MAR p. 2285.
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