Controlling NOx Emissions from Minor Combustion Sources
Rules in Title 30, Texas Administrative Code, Chapter 117 for controlling emissions of nitrogen oxides from minor industrial, commercial, and institutional sources in ozone nonattainment areas. These rules are part of the State Implementation Plan strategy to meet the National Ambient Air Quality Standard for ozone.
Areas Affected
- Dallas–Fort Worth area (Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall, and Tarrant counties)
- Houston-Galveston-Brazoria area (Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery, and Waller counties)
Rule Citation
30 TAC Chapter 117, Subchapter D 
Description of Rules
- Limit NOx emissions in the Dallas–Fort Worth area from stationary, reciprocating internal combustion engines at any site that emits less than 50 tons of NOx per year.
- Limit NOx emissions in the Houston-Galveston-Brazoria area from the following equipment located at any site that emits less than 25 tons of NOx per year:
- boilers and process heaters
- stationary, reciprocating internal combustion engines
- stationary gas turbines, including duct burners
- Include operating, monitoring, testing, and record-keeping requirements.
Rule History
The Chapter 117 rule history for minor industrial, commercial, and institutional sources discusses revisions to the rules, including their proposal and adoption, the associated State Implementation Plan revision, and U.S. Environmental Protection Agency approval.
Compliance Resources
- Resources for small businesses and local governments
- Mass Emissions Cap and Trade Program
- American Society for Testing and Materials (ASTM) Standards
- EPA Test Methods
- EPA performance specifications for continuous emission-monitoring systems and CEMS quality-assurance procedures
- Protocol fo predictive emission-monitoring systems referenced at 30 TAC 117.8100(b)
- Guidance for independent school districts on the record-keeping requirements of 30 TAC 117.2035(a)(2)(E)
- Summary of Texas boiler rules
- Summary of Texas engine rules
Related Information
- Stakeholder groups that help the agency with air quality issues
- State plan to meet the national ozone standard
- Air permitting and registration
- Tax relief for pollution-control property
- Point source emissions inventory
Contact Information
- Contact the Stationary Source Programs Team for additional information about stationary source rules.
- Sign up to receive e-mail updates on SIP-related information, including information on stationary source rules. Select SIP Hot Topics under the Air Quality heading.
