On this page: Overview | When are reports due? | Who must report? | How do I report? | Which air toxics must be reported? | Is there a fee on my reported emissions? | How do these reports differ from Air Pollutant Emission Notice (APEN) reporting? | Where can I find upcoming or previous presentations to assist reporters? | Where can I access information previously reported to the Air Pollution Control Division? | Technical assistance for small businesses | Contact
Overview
On June 2, 2022, HB22-1244: The Public Protections From Toxic Air Contaminants Act was signed into state law. The law includes requirements for certain sources of air pollution to submit annual toxic air contaminant emission reports. This web page offers guidance for sources that must submit reports.
When are reports due?
The first annual air toxics reports were due by June 30, 2024. Subsequent reports are due on an annual basis on June 30 each year and include data on the previous calendar year.
Who must report?
All sources required to obtain an operating permit and synthetic minor sources are required to report annual facility-wide air toxics emissions.
If a facility changes ownership or control of the facility during the reporting year, the owner or operator as of June 30, 2024 is responsible for submitting the report. If a facility did not operate in the reporting year, it must verify the facility operating status in the provided reporting template. CDPHE’s Air Pollution Control Division will calculate zero emissions for facilities that did not operate at any point during the reporting year.
The division created a list of facilities that are expected to report air toxics emissions for calendar year 2024. This is provided as a courtesy and may not include all facilities that are subject to air toxics reporting requirements.
How do I report?
2024 Toxic Air Contaminant reporting
If your facility reports to the Oil and Gas Emission Annual Emission Inventory (ONGAEIR), the air toxics reporting template has been incorporated into that template. The 2024 templates and submission instructions are available on the ONGAEIR website.
If your facility does not report to ONGAEIR:
- Download the 2024 air toxics reporting spreadsheet.
- Submit completed 2024 reports using the annual report form.
The division developed a reporting guidance and answers to frequently asked questions. The guidance covers best practices, resources for reporting emissions, the report submittal procedure, and more. The guidance contains information and resources about emission estimation methods, such as links to emission factor compilations, speciation methods, and material balance calculation explanations.
2023 Toxic Air Contaminant reporting
If your facility has not submitted an air toxics report for calendar year 2023 emissions, please download the 2023 air toxics reporting spreadsheet, and email the report directly to cdphe_apcd_airtoxics@state.co.us.
Which air toxics must be reported?
A full list of all air toxics that must be reported are available on the toxic air contaminants web page.
Is there a fee on my reported emissions?
For the initial two years of TAC reporting, reports due June 30, 2024 and June 30, 2025, no fee is required as part of the report submission. Any fees in future years would be dependent on rulemaking action from the Air Quality Control Commission.
How do these reports differ from Air Pollutant Emission Notice (APEN) reporting?
This annual report does not replace APEN reporting requirements. Facilities may be exempt from APEN reporting requirements if their air toxics emissions are below a certain threshold. However, those same facilities are not exempt from these new annual air toxics reporting requirements.
Where can I find upcoming or previous presentations to assist reporters?
The division held a virtual discussion on the 2024 air toxics reporting templates and submission procedures on Thursday, Jan. 23, 2025.
For all upcoming meetings related to air quality, visit the division’s public participation opportunities web page.
Where can I access information previously reported to the Air Pollution Control Division?
The reported data is available on the air toxics reporting web page.
Technical assistance for small businesses
The division provides free technical assistance to small businesses impacted by the air toxic reporting requirements. Businesses with fewer than 100 employees are eligible. For more information, visit the Small Business Assistance Program web page or email cdphe_apcd_sbap@state.co.us.
Contact us
Questions? Email cdphe_apcd_airtoxics@state.co.us