area source

An origin of air pollutant emissions that occur from a definable area or surface that is sufficiently large to exhibit a continuous gradient of source concentrations, and where the physical scale precludes its classification as a point source. Area source in regulatory use defines a facility (collection of sources) that has emissions below the Environmental Protection Agency (EPA) specified major source threshold for pollutants.

Authorization Path: 2.4.5.2.20.1