On this page: Upcoming public participation opportunities | Ongoing technical expert online meetings | Meeting accommodation notice | Get involved: Air permit public notices | More ways to engage with the state of Colorado | Colorado Air Quality Regulation Updates | 10 tips for making effective public comments
Below are ongoing and upcoming public participation opportunities with the Air Pollution Control Division. These events may be in-person, virtual, or hybrid. The division holds regular events such as public meetings, tutorials, and more. The division uses these meetings to share updates, learn from community experiences, and incorporate feedback into our work protecting clean air for all Coloradans.
Questions? Contact cdphe_apcd_outreach@state.co.us. Please include the meeting topic in the subject line.
Stay connected. Sign up for email updates from the Air Pollution Control Division. Sign up for “General Air Division Updates” or a particular topic of interest. You’ll be one of the first to know about upcoming public participation opportunities.
New Colorado air monitoring guidance
The division’s proposed enhanced air monitoring guidance document is available for review and public comment through June 28, 2024. Submit comments by June 28 - new requirements start July 15, 2024.
A panel of subject matter experts will also meet for a final time at 1 p.m. on July 1, 2024. During this meeting the panel will discuss the proposed guidance and public comments received by the division.
- Virtual event: Monday, July 1, 1 - 3 p.m.
The division will consider public feedback and suggestions from the panel before it finalizes the enhanced air monitoring guidance in July 2024. The new monitoring requirements apply starting July 15, 2024 under Colorado’s groundbreaking 2023 rule to protect clean air in Colorado communities.
Reducing greenhouse gas emissions in the manufacturing sector
Please join a public meeting about greenhouse gas credit trading pathways between Colorado’s highest-emitting manufacturing operations. These manufacturers emit air pollutants when producing a wide range of products, including petrochemicals, microchips, and glass. The Greenhouse Gas Emissions and Energy Management for Manufacturing 2 rule, or GEMM 2, was adopted in October 2023. The Air Pollution Control Division convened a technical working group in February 2024 to provide guidance and recommendations to the division on how regulated facilities with different emission reduction requirements may use the credit trading program established in the Air Quality Control Commission’s GEMM 2 rule. Learn more on the working group’s website. The division will share the technical working group’s progress, concepts, and recommendations as well as the division's intended pathway for addressing this challenge. The division welcomes and encourages community input and questions.
- Virtual event, Tuesday, July 16, 6 - 7:30 p.m.
Midstream oil and gas greenhouse gas reduction planning public meeting
Please join a public meeting about greenhouse gas reduction planning for midstream oil and gas facilities statewide. Division staff will share the Midstream Segment Emission Reduction Plan that it will propose to the Air Quality Control Commission in August, 2024. All are welcome to participate and share feedback. Please focus your comments on the proposed plan and upcoming rulemaking. The live meeting will be recorded.
- Virtual event, Thursday, July 18, 6 - 8 p.m.
Priority air toxics and health-based standards
Please join a public feedback session about the selection of priority air toxics and health-based standards and associated regulatory requirements. This work stems from a 2022 state law: Public Protections from Toxic Air Contaminants (House Bill 22-1244). All are welcome to participate and share feedback. Please focus your comments on the priority air toxics and health based standards. The live meeting will be recorded.
- Virtual event: Tuesday, July 23, 2024, 6 - 8 p.m.
Nitrogen oxide reduction planning in oil and gas exploration and production
Please join us to learn about work being done to reduce nitrogen oxides, chemicals that contribute to the formation of ozone pollution in Colorado. The Nitrogen Oxides Reduction Steering Committee has been meeting monthly since March 2024 to discuss ways to reduce nitrogen oxide emissions from oil and gas exploration and production processes. The division will provide some general information about ozone. Questions and feedback on this work is welcome and encouraged. This meeting will also include brief updates on the division’s ozone state implementation plan.
- Virtual event, Thursday, July 25, 6 - 8 p.m.
Midstream oil and gas greenhouse gas reduction planning public meeting
Please join a public meeting about greenhouse gas reduction planning for midstream oil and gas facilities statewide. Division staff will share the Midstream Segment Emission Reduction Plan that it will propose to the Air Quality Control Commission in August, 2024. All are welcome to participate and share feedback. Please focus your comments on the proposed plan and upcoming rulemaking. The live meeting will be recorded.
- Virtual event, Saturday, August 10, 10 a.m. - 12 p.m.
Priority air toxics and health-based standards
Please join a public feedback session about the selection of priority air toxics and health-based standards and associated regulatory requirements. This work stems from a 2022 state law: Public Protections from Toxic Air Contaminants (House Bill 22-1244). All are welcome to participate and share feedback. Please focus your comments on the priority air toxics and health based standards. This meeting will also include brief updates on the division’s ozone state implementation plan. The live meeting will be recorded.
- Virtual event: Saturday, August 24, 2024, 10 a.m. - 12 p.m.
View the Air Pollution Control Division's past public participation and outreach opportunities. These serve as a historic archive. These processes are completed.
The Air Quality Control Commission’s procedural rules guide how the commission must run meetings and rulemaking hearings. The commission is considering changes to its procedural rules to improve the rules and rulemaking process. These updates aim to modernize the process and better meet community needs.
The Air Pollution Control Division and commission are hosting online technical meetings in spring and summer 2024. Interested stakeholders are welcome to join. These meetings will go into detailed discussion about the procedural rules and proposed changes.
For more information about meeting dates and how to register, visit the Updating Air Quality Control Commission procedural rules web page.
Between January 2024 and 2025, the division is hosting a scientific community technical working group. The working group is focused on toxic air contaminants. This group will help advance the 2022 state law: Public Protections from Toxic Air Contaminants Act (House Bill 22-1244). These technical meetings are open to the public. The meetings stream live online.
For more information about meeting dates and how to register, visit the air toxics working group’s web page.
The Nitrogen Oxides (NOx) Reduction Steering Committee began meeting in March 2024. The members committed to holding meetings once a month for at least six months. During these meetings, members engage in technical discussions on potential strategies to reduce NOx pollution. The focus is on reducing NOx emissions from oil and gas exploration and production processes in Colorado.
Meetings are held virtually. Members of the public are welcome to observe.
For more information about meeting dates and how to register, visit the reducing nitrogen oxides from oil and gas web page.
Meeting accommodation notice
Auxiliary aids and services for individuals with disabilities may be provided upon request. Please notify cdphe_apcd_outreach@state.co.us and the Nondiscrimination Coordinator at cdphe_nondiscrimination@state.co.us or 303-692-2102 at least one week prior to the meeting to make arrangements.
Get involved: Air permit public notices
Visit the air permit public notices web page to:
- Submit public comments on individual air permits.
- Sign up for email notifications about air permit public notices and comment periods.
- Learn about, request, or register for public comment hearings on air permits.
More ways to engage with the state of Colorado
For a calendar of upcoming community engagement opportunities across the Colorado Department of Public Health and Environment, visit the department’s public participation website.
If you have questions or need to contact the Air Pollution Control Division, visit the division’s contacts website.
For upcoming Air Quality Control Commission public participation opportunities, visit the AQCC website.
For upcoming Colorado Energy and Carbon Management Commission hearings and public participation opportunities, visit the ECMC website.
For upcoming Public Utilities Commission hearings and public participation opportunities, visit the PUC’s website.
Colorado Air Quality Regulation Updates
The Air Pollution Control Division periodically proposes updates to existing air quality regulations to the Air Quality Control Commission. The commission reviews the proposals and determines whether to adopt any changes.
Many of these changes are minor or administrative. The division provides quick updates about these changes during public meetings.
The public can also learn more during the commission’s hearing requests and hearings. Visit the commission’s website and meeting calendar for more information.
To submit written public comments, email:
- cdphe.commentsapcd@state.co.us before a commission hearing request.
- cdphe.aqcc-comments@state.co.us after a commission hearing request.
- Please include the Regulation Number “Public Comment” in the subject line.
Questions? Contact cdphe_apcd_outreach@state.co.us.
Upcoming proposed changes to existing Colorado air quality regulations include:
- Proposed updates include:
- Updating and modernizing the rules dictating how the Air Quality Control Commission must run its meetings and rulemaking hearings.
- Simplifying the rulemaking process, making procedural rules easier to understand, and making the rulemaking process more accessible to community members.
- Hearing request date: August 14-16, 2024
- Questions or public comments? Email cdphe.commentsapcd@state.co.us before the commission hearing request date above.
- Hearing date: November 20-22, 2024
- Questions or public comments? Email cdphe.aqcc-comments@state.co.us before the hearing date above.
- Questions or public comments? Email cdphe.aqcc-comments@state.co.us before the hearing date above.
- The Air Pollution Control Division and U.S. Fish and Wildlife Service present on the Service’s prescribed fire planning renewal document. Proposed updates include:
- Hearing request date: May 15-17, 2024
- Questions or public comments? Email cdphe.commentsapcd@state.co.us before the commission hearing request date above.
- Hearing date: July 18-19, 2024
- Questions or public comments? Email cdphe.aqcc-comments@state.co.us before the hearing date above.
- For Part C, Recovered Methane, proposed updates include:
- Updating references to the “American Carbon Registry” to “ACR” throughout the rule. The American Carbon Registry changed its name to ACR on October 5, 2023.
- Updating the ACR municipal solid waste landfill methane protocol and coal mine methane protocol to reflect ACR’s recent updates.
- Removing references to Part B, Section II, which was moved to Regulation 27.
- Other minor changes.
- Hearing request date: February 15, 2024
- Questions or public comments? Email cdphe.commentsapcd@state.co.us before the commission hearing request date above.
- Hearing date: July 18-19, 2024
- Questions or public comments? Email cdphe.aqcc-comments@state.co.us before the hearing date above.
Thank you for your interest in submitting comments to the Air Pollution Control Division. To protect public health and improve Colorado’s air quality, the division may present rules, permits, guidance documents, and other updates to communities so they can share their feedback and ask questions.
Our team values and considers every comment we receive.
Explore our web page. These tips are for written comments but can also be helpful when planning oral comments for a public meeting.
Questions? Email us at cdphe.commentsapcd@state.co.us.