Are there odor or air quality restrictions?

Effective September 7th, 2022 Title 5, the Business Licenses and Regulation Code, was amended to include air quality mitigation measures for cannabis cultivation and cannabis manufacturing businesses. New and existing cannabis cultivation or manufacturing businesses must install and maintain carbon filters. The carbon filters and associated fan must be sized and installed to circulate air equal to the volume of the room used for cultivating or manufacturing no less than once per every 5 minutes. Several filters may be used to meet this requirement. To find out if your carbon filter is properly sized for the room, dived the volume of the room used for cultivating or manufacturing (length x width x height) by the exchange rate which is 5 minutes. The resulting number in cubic feet per minute is the requirement that must correspond to the fan and filter specifications. If you need assistance calculating the requirement, contact To show compliance at the time of permitting, provide the manufacturer specifications for the carbon filters used at your business and dimensions of the cultivation or manufacturing room.

Show All Answers

1. Do I need a permit or license?
2. How do I apply for a permit/license?
3. How does the review process work?
4. How do I schedule an inspection?
5. Will I need a change-of-use?
6. Will I need an Architect/Engineer?
7. Will I need mechanical, electrical or plumbing permits?
8. Can I install mechanical equipment, duct work, or exhaust fans myself?
9. I have un-permitted work I need to resolve in order to get my license, now what?
10. How do I open a dispensary?
11. What is the process for opening a cultivation business in the City of Missoula?
12. Can I grow Cannabis plants in my home?
13. What is the process for opening an extraction business in the City of Missoula?
14. How do I add a use to my existing business license or 420 license?
15. How do I increase the canopy area of my existing business license?
16. How is my canopy area calculated?
17. When is my business able to switch from medical to recreational?
18. Are there odor or air quality restrictions?
19. Are there energy use restrictions for cannabis cultivation?
20. How do I submit a complaint related to Cannabis?