Environmental Protection Agency: National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines
GAO-10-503R: Mar 16, 2010
GAO reviewed the Environmental Protection Agency's (EPA) new rule on national emission standards for hazardous air pollutants for reciprocating internal combustion engines. GAO found that (1) the final rule promulgates national emission standards for hazardous air pollutants for existing stationary compression ignition 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. The final rule also promulgates national air standards for hazardous air pollutants for existing non-emergency stationary compression ignition engines greater than 500 horsepower that are located at major sources of hazardous air pollutant emissions; and (2) EPA complied with applicable requirements in promulgating the rule.