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Assistance Tools for the National Emission Standards for Hazardous Air Pollutants

Tools for complying with NESHAP rules to reduce emissions from facilities that are major and area sources.

Hazardous air pollutants (HAP) are pollutants that are known or suspected to cause serious health effects or adverse environmental effects. Regulations have been put in place to decrease the releases of 187 hazardous air pollutants into the environment.

The National Emission Standards for Hazardous Air Pollutants (NESHAP) rules list the specific requirements that facilities must follow to accomplish these reductions. These rules may apply to both major and area sources.

  • Your facility is a major source if it emits or has the potential to emit 10 tons or more per year (tpy) of a single HAP listed in the Clean Air Act, or 25 tons or more per year of a combination of those HAPs. Potential to emit is defined in Title 30 Texas Administrative Code (30 TAC) Chapter 122 as the maximum capacity of a stationary source to emit any air pollutant under its physical and operational design or configuration.
  • Your facility is an area source if it is not a major source.

The TCEQ has accepted delegation of 129 NESHAP rules from the EPA. If the TCEQ has accepted delegation and the rule is listed in 30 TAC 113 Subchapter C , the Initial Notification and Notice of Compliance status forms must be sent to the TCEQ regional office with jurisdiction.

Here is a list of some common NESHAP Rules. Find tools to assist you in complying with these requirements by clicking on the links.

The TCEQ Air Permits Division also maintains a list of all NESHAPs by Subpart on its 40 CFR Part 63 webpage

Where can I find more information and assistance?

The TCEQ's Small Business and Local Government Assistance Section offers free, confidential help to small businesses and local governments working to comply with state environmental regulations. Call us at (800) 447-2827 or visit our Web page at