|
Point Sources:
Discrete stationary sources, such as smoke stacks from industrial facilities and fermentation processes
Mobile Sources:
Both onroad sources, such as cars and trucks, and nonroad sources, such as agricultural equipment, construction equipment, trains, airplanes, etc.
Biogenic Sources:
All non-anthropogenic sources, such as trees and vegetation, oil and gas seeps, and microbial activity.
Nonpoint Sources:
Sources that are not classified as point, mobile, or biogenic, such as residential fuel use and landfills.
|
|
