Maximum Achievable Control Technology

Under the Clean Air Act, EPA is legally mandated to regulate the emission of hazardous air pollutants (HAPs) by industrial sources. MACT standards use the HAP emissions of the best-performing industry sources to set the “MACT floor”, the new minimum standard that an industry must at least meet in order to comply. Control technologies are not limited to technological solutions, but also encompasses the processes, methods, systems, and techniques that are used in facilities to reduce their HAP emissions.

Related terms:

• Hazardous Air Pollutants (HAPs)

• Greenhouse Gas Emissions

• Toxics Release Inventory