A blue tractor pulling two white anhydrous ammonia tanks fertilizing a field
Anhydrous ammonia is a widely used source of nitrogen fertilizer.

The Agricultural Anhydrous Ammonia Workgroup is a stakeholder workgroup organized by the Missouri Department of Natural Resources' Air Pollution Control Program. The Agricultural Anhydrous Ammonia Rule was delegated to the department through House Bill 3. Beginning Jan. 2, 2023, the effective date of the bill, the department's Air Pollution Control Program will prepare a preliminary rulemaking package to comply with the bill’s provisions. This will take 18-24 months to complete.

In the early stages of the rulemaking process, the air program will hold meetings to explain the bill and the new fee structure and to lay out the timeline for the affected sources. Updates to this rulemaking will be posted on this webpage and will be distributed through GovDelivery. If you would like to receive notifications, click on the green "Get Updates on this Issue" button on this webpage.


Meetings are held as needed and are open to everyone. Attendance at these meetings may be in person, by conference call or through Webex. The department will attempt to correct technical difficulties as they arise, but the department cannot guarantee the quality of the Webex or conference call option. The meeting will not be subject to change or repeat due to any technical difficulties.

If there are issues you would like to discuss during the meeting, you will need to notify the department before the meeting. You can do this by emailing the staff coordinator noted below. Individuals requiring special services or accommodations in order to attend a meeting can make arrangements by contacting the staff coordinator at least 48 hours before the meeting. Hearing- and speech-impaired individuals may contact the staff coordinator through Relay Missouri at 800-735-2966. Translation or interpretation services will be provided upon request at no charge. Call 573-522-9395 for assistance.

Staff Coordinator: Stephanie Durbin, Rule Development Unit, AGAmmoniaRiskManagement@dnr.mo.gov, 573-751-4817

Upcoming Meetings

Video Attendance Available!
Statewide, Missouri
More Info:
Join the April 29 meeting using Webex

Past Meetings

Statewide, Missouri
More Info:
Video recording, May 16, 2023
Additional Materials:
Agricultural Anhydrous Ammonia, Kickoff Presentation, May 16, 2023


Information will be added as soon as it becomes available.