Standards of Performance for Stationary Spark Ignition Internal Combustion Engines and National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines
EPA is promulgating new source standards of performance for stationary spark ignition internal combustion engines. EPA is also promulgating national emission standards for hazardous air pollutants for new and reconstructed stationary reciprocating internal combustion engines that either are located at area sources of hazardous air pollutant emissions or that have a site rating of less than or equal to 500 brake horsepower and are located at major sources of hazardous air pollutant emissions.