Air Pollution Control Division: Public participation opportunities
On this page: Upcoming public participation opportunities | Public Meetings | Meeting accommodation notice | Current projects | 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 | Stay informed | Contact us
Upcoming public participation opportunities
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.
Public meetings
The air division’s public meetings provide an opportunity to learn more about air quality and climate change topics. These meetings generally allow anyone to ask questions and provide feedback directly to the division. Register for upcoming public meetings below to join and learn more.
Developing Colorado’s Industrial Decarbonization Fund
The division is holding two public informational sessions in July on the development of the state-managed Industrial Decarbonization Fund. Industrial decarbonization is reducing greenhouse gases from sites like steel mills, meat packing plants, or glass factories. The fund is required under Colorado Air Quality Control Commission Regulation 27. These sessions will provide an overview of requirements in Regulation 27 and the timeline for concept development, rule drafting, and stakeholder engagement.
Both public informational sessions will be held virtually over Zoom. Translation or interpretation services will be provided upon request. Verbal comments will not be accepted during this meeting. Written comments may be shared by emailing climatechange@state.co.us using the subject line “Industrial Decarbonization Fund.” Both meetings will cover the same information. Register to join a meeting:
The division must propose an Industrial Decarbonization Fund under Colorado’s Greenhouse Gas Emissions and Energy Management for Manufacturing Phase 2 Rule, or GEMM 2. The division will present a proposal to the commission for consideration by the end of 2025.
Air toxics monitoring report
The division is holding public meetings in July to review the first year of the state’s air toxics monitoring program. The division installed monitors at three new air monitoring sites around Colorado to gather air toxics measurements. The division will share preliminary results and trends observed from these new air monitoring sites during 2024. The division is seeking input on what questions the public would like the division to try to address when the division publishes the report in October 2025. The new monitors and annual reports are required under House Bill 22-1244: The Public Protections from Toxic Air Contaminants Act.
Register for an upcoming public meeting to learn more and share your thoughts on what questions you would like answered in the draft report. Both meetings will cover the same information.
Air toxics monitoring report public meetings
Oil and gas methane reduction public meeting
The division is considering revisions to AQCC Regulation Number 7 related to the "designated facilities" identified in EPA's oil and gas Emission Guidelines and New Source Performance Standards that would reduce methane emissions. The Division is also considering refinements related to the upstream oil and gas greenhouse gas provisions.
The July 26 meeting will also include potential updates to several Air Quality Control Commission regulations, listed below. These proposed updates would be primarily administrative in nature.
- Regulation 6, part A.
- Regulation 8, parts A & E.
- Regulation 28.
- Common provisions
Oil and gas methane reduction public meeting
View past public participation and outreach opportunities. These serve as a historic archive. These processes are completed.
The division periodically presents rules, permits, guidance documents, and other updates to communities so they can share their feedback and ask questions. Public comment periods are a key part of this process, enabling Colorado residents to share their perspectives on proposed regulations and policies. The feedback supports the division’s work to protect public health and improve Colorado’s air quality.
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.
Current projects
Environmental Justice Summary Dashboard
Most air pollution sources in Colorado must submit an environmental justice summary before applying for an air permit. That means environmental justice summaries provide early notice before the division receives an air permit application. The environmental justice summary dashboard allows users to find a specific facility by name or enter a zip code for a list of recent submissions within a one-mile radius. Learn more about the Environmental Justice Summary Dashboard.
Air permits open for public comment
The division opens numerous air permits for public comment each month. The division encourages anyone interested in air permits to visit the air permits public notices web page and sign-up to receive email updates by subscribing to Air Permit Public Notices. The division also shares upcoming public participation opportunities on its website and tips for submitting effective public comments.
Annual Air quality enforcement report
The division released a new annual enforcement report in March 2025. The report summarizes the number of complaints that led to enforcement actions, enforcement actions, and total penalties in disproportionately impacted communities and parts of Colorado that do not meet federal ozone pollution standards. The annual report covers enforcement actions, penalties and trends between October 2023 and September 2024. It shows the total, average, and median penalties for air quality violations have continued to increase over time. Information on enforcement actions the division took between 2018-2023 can be found in the five-year enforcement benchmark report released in December 2024. Learn more about the Annual Air quality enforcement report.
Ongoing technical expert online meetings
Technical expert online meetings provide an opportunity to listen to in-depth discussions among subject matter experts. The experts discuss topics related to the division’s work on air quality and climate change. These meetings are streamed live or recorded for transparency. These meetings generally do not provide a public comment or question and answer session. To provide feedback to the division, explore the division’s public meeting opportunities above.
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 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. Prior to submitting a formal proposal to the commission, the Division will publish regulatory concepts on this website. Once a formal proposal is submitted, 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 commission’s website provides a calendar of upcoming meetings and more information on meeting topics.
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@state.co.us after a commission hearing request.
- Please include the Regulation Number “Public Comment” in the subject line.
Upcoming regulatory concepts or proposed changes to existing Colorado air quality regulations include:
- Proposed updates include:
- Establishing a new Regulation Number 31, which will address municipal solid waste landfill greenhouse gas control and monitoring requirements.
- Hearing date: August 21-22, 2025
- Questions or public comments? Email cdphe.aqcc@state.co.us before the hearing date above.
- Proposed updates include:
- The division will request that the Commission set a hearing to consider revisions to Regulation 28 to address technical corrections to the rule, specifically related to agricultural buildings, utility subscription services, and the annual fee deadline.
- Hearing date: September 17-19, 2025
- Questions or public comments? Email cdphe.aqcc@state.co.us before the hearing date above.
- Proposed updates include:
- Revisions to Regulation Number 30 to establish health based standards for the adopted priority air toxic contaminants, for General Assembly approval, in response to HB 22-1244.
- Hearing date: September 17-19, 2025
- Questions or public comments? Email cdphe.aqcc@state.co.us before the hearing date above.
- Regulatory Concepts - Questions or comments? Email cdphe.commentsapcd@state.co.us before the hearing request date below.
- Hearing request date: September 17, 2025
Thank you for your interest in submitting comments to the air 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.
Stay informed
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.
- Join the air quality compliance and enforcement updates to learn about enforcement actions by the division.
- Join the air permit public notice list to receive updates on environmental justice summaries and permits open for public comment.
Contact us
Questions? Contact cdphe_apcd_outreach@state.co.us.
Stay informed. Subscribe to receive email updates from the division.