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You are here: Home / Small Business and Local Government Assistance / Air Compliance Resources / Assistance Tools for Minor Sources of Nitrogen Oxide

Assistance Tools: Minor Sources of Nitrogen Oxide

Tools and resources for complying with rules for minor sources of nitrogen oxides.

This page provides information to assist owners-operators of facilities who need to comply with air quality rules for controlling the emissions of nitrogen oxides (NOx) from certain combustion sources also referred to as minor sources.

These links provide information for complying with the rules for minor sources of NOx in specific nonattainment areas. (Read more about nonattainment areas.)

  • Houston–Galveston–Brazoria Eight-Hour Ozone Nonattainment Area
    Information to help determine the requirements for controlling emissions from certain combustion sources such as boilers, process heaters, stationary engines, and turbines. You can also download sample logs.

    The Houston-Galveston-Brazoria eight-hour ozone nonattainment area comprises Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery, and Waller Counties. Minor sources in these counties emit or have the potential to emit less than 25 tons per year of NOx. Potential to Emit (PTE) is defined in Title 30 Texas Administrative Code (TAC) Chapter 122 as the maximum capacity of a stationary source to emit any air pollutant under its physical and operational design.

  • Dallas-Fort Worth Eight-Hour Ozone Nonattainment Area
    Information to help determine the requirements for controlling emissions from certain combustion sources such as stationary engines. You can also download sample logs.

    The Dallas-Fort Worth eight-hour ozone nonattainment area comprises Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall, and Tarrant Counties. Minor sources in these counties emit or have the potential to emit less than 50 tons per year of NOx. Potential to Emit (PTE) is defined as the maximum capacity of a stationary source to emit any air pollutant under its physical and operational design.

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 TexasEnviroHelp.org.