Construction permits: Administrative Rules of Montana (ARM) 17.8.740 to 17.8.770
Nonattainment New Source Review (NSR): 40 CFR 52.1370 and ARM 17.8.901 to 17.8.906
Applicability: ARM 17.8.901 and ARM 17.8.904
Permitting requirements: ARM 17.8.905
Nonattainment areas: 40 CFR 81.327
Prevention of Significant Deterioration (PSD): ARM 17.8.801 to 17.8.828 and 40 CFR 52.1382
Applicability: ARM 17.8.801 and ARM 17.8.818
Permit requirements: ARM 17.8.818 to 17.8.824
Action on the application: ARM 17.8.826
Class I areas: 40 CFR 81.417, ARM 17.8.806, and ARM 17.8.825
Nonattainment area impact: ARM 17.8.1001 to 17.8.1007
Visibility Impact Assessment: ARM 17.8.1101 to 17.8.1111
Montana Department of Environmental Quality (DEQ) Permitting and Compliance Division Air Resources Management Bureau
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
• Rules. Montana requires any new or modified source of air contaminants to secure an air quality permit to construct, unless specifically excluded. New major sources or modifications to existing major sources must comply with the applicable provisions of nonattainment New Source Review (NSR) and/or Prevention of Significant Deterioration (PSD) depending on the attainment status of the area where the source is located and the type and quantity of air pollutants emitted.
Montana currently has several counties that are in nonattainment with one or more of the National Ambient Air Quality Standards (NAAQS). The provisions of nonattainment NSR apply to new major sources or major modifications in those areas, while PSD requirements apply to attainment ...