The Air Toxics safeguard, or the “Power Plant MACT (Maximum Available Control Technology)” was updated in March 2011 by the Environmental Protection Agency (EPA), and will cut down on emissions of air toxics like mercury, arsenic, lead, dioxin, and acid gases.
The updated safeguard will require new power plants to reduce their hazardous air pollution to match the best-performing and cleanest plants for each type of pollutant. Existing power plants will have more time to meet the standard—taking into account available technologies and cost.
How? It basically means that all of our dirty ol' powerplants will need to install equipment (scrubbers) to match the best-performing and cleanest plants for each type of pollutant.