Stationary internal combustion engines use pistons that alternatively move back and forth to convert pressure into rotating motion. Many types of stationary engines exist and are found on farms, including diesel engines, spark ignited engines, and reciprocating internal combustion engines. Air quality requirements vary for stationary engines, depending on whether the engine is new or existing, where the engine is located, and what type of ignition system is used.

• Rule and Implementation Information for Stationary Internal Combustion Engines
• Overview of RICE NESHAP Requirements for Stationary Agricultural Engines

A video for farmers about the air quality requirements for stationary engines is available from EPA's Air Pollution Training Institute. To navigate to the video, choose "LEARN," then "Stationary Sources," and then "Launch Course."