State agency · Montana
Montana Department of Environmental Quality Air Quality Bureau
Agency type: Environmental Regulator
- Environmental / Emissions
- Permitting
GCC provides directory information, not legal or regulatory advice. Verified means GCC checked the agency identity and listed information against one or more official sources. It is not an endorsement.
Official contact information
- Official website
- https://www.deq.mt.gov/air/assistance
- Phone
- 406-444-3490
- deqair@mt.gov
- Mailing address
- Montana DEQ Air Quality Bureau, PO Box 200901, Helena, MT 59620-0901
Regulatory topics
- Environmental / Emissions
- Permitting
Official sources
- About AirConfirmed 2026-08-13
- Air Permitting and Operator AssistanceConfirmed 2026-08-13
