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Controlling NOx Emissions from Engines in East Texas

Rules in Title 30, Texas Administrative Code, Chapter 117 for controlling emissions of nitrogen oxides from internal combustion engines in east Texas. These rules are part of the State Implementation Plan strategy to meet the National Ambient Air Quality Standards for ozone.

Areas Affected

Other Counties:

  • Anderson County
  • Brazos County
  • Burleson County
  • Camp County
  • Cass County
  • Cherokee County
  • Franklin County
  • Freestone County
  • Grimes County
  • Henderson County
  • Hill County
  • Hopkins County
  • Hunt County
  • Lee County
  • Leon County
  • Limestone County
  • Madison County
  • Marion County
  • Morris County
  • Nacogdoches County
  • Navarro County
  • Panola County
  • Rains County
  • Robertson County
  • Shelby County
  • Titus County
  • Van Zandt County
  • Wood County

Rule Citation

30 TAC Chapter 117, Subchapter E, Division 4

Rule Description

  • Limit NOx emissions from stationary gas-fired reciprocating internal combustion engines.
  • Monitoring, reporting, recordkeeping, and testing requirements may apply depending on the size (horsepower) of the engine.

Rule History

The Chapter 117 rule history for East Texas engines gives information on revisions to the rules, including the rule proposal and adoption, the associated state implementation plan revision, and the U.S. Environmental Protection Agency approval of the rules.

Compliance Resources

Related Information

Contact Information