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Emission Events

Emission Event Forms and Reports

Air Emissions and Maintenance Events Reporting

Air Emissions and Maintenance Events Reporting Form, instructions, and TCEQ contact information.

Air Emissions and Maintenance Events notifications and reports are required to be submitted via STEERS, the State of Texas Environmental Electronic Reporting System (STEERS).

STEERS notification and reporting is not required for small businesses that meet the small business definition in Texas Water Code Section 5.135(g)(2). Small businesses shall provide notifications and reporting by any viable means that meet the time frames required by 30 TAC Chapter 101. Small businesses should email the notification or report to

In the event that STEERS is unavailable due to mechanical failures or scheduled maintenance or you are a small business, required reporting under 30 Texas Administrative Code (TAC) Chapter 101 (e.g. emissions event, opacity event, and maintenance, startup, & shutdown activity) may be completed by emailing the form below to Please remember that if you are not a small business, when you submit the form via email that allows you to meet the reporting deadline. Once STEERS is available you must submit the required notification or report via STEERS.

If you encounter issues with the STEERS operating system, your user account or password, or have questions about scheduled system maintenance, please contact the STEERS Help Line at 512-239-6925 or for assistance. You can also consult the STEERS Air Emissions and Maintenance Events (AEME) Help page for assistance with entering events into STEERS. 

Reports of Air Emissions Events

View air emissions incidents reported to TCEQ under 30 TAC 101.201 and 30 TAC 101.211.

TCEQ receives reports on air emission events under 30 TAC 101.201  and 30 TAC 101.211 :

Users can search the database by different parameters including incident number and county. Search results include, but are not limited to, where the incident was reported, compounds released and quantities, and the event duration. These search results and each incident detail report can be exported to an Excel spreadsheet.

Emissions Events Investigations

When an emissions event occurs, companies must submit an initial notification in the State of Texas Environmental Electronic Reporting System (STEERS) within 24 hours of discovery of the event if a reportable quantity will be exceeded and a final report is due two weeks from the end of the event after the entity has fully evaluated the incident. TCEQ reviews these events against criteria located in the Texas Administrative Code to determine if the event was avoidable and assesses whether or not operators took measures to minimize emissions. 

After receiving a report of an emissions event, TCEQ conducts an initial screening and sends a questionnaire to the reporting entity if appropriate. These questions are based on the Demonstration Criteria in 30 TAC 101.222

Based on the results of an investigation of an incident, TCEQ may pursue enforcement actions when appropriate against regulated entities which may include the assessment of a penalty.