A source category of air pollution that generally extends over a large area. Prescribed burning, field burning, home heating, and open burning are examples of area sources.
An array of pollutant sources, so widely dispersed and uniform in strength that they can be treated in a dispersion model as an aggregate pollutant release from a defined area at a uniform rate. Compare line source and point source.
Any stationary source of hazardous air pollutants that is not a major source. For purposes of this definition, the term "area source" shall not include motor vehicles or non-road vehicles subject to regulation under Title II of the 1990 FCAA Amendments. Fed
Widespread origin of emissions. RT point source.
An anthropogenic source category that is represented as a 2-d source, typically a county. In SMOKE, the term area source more specifically refers to a collection of source categories types that are not point sources and are not on-road mobile sources. SMOKE area sources are defined by country, state, and county codes and by source category codes (SCCs). Area sources are also referred to as stationary area sources and, in SMOKE, include nonroad mobile sources.
a source that is not a major source
All stationary sources smaller than those defined as "major". Examples include gas stations. Also included are emission source such as consumer products and cleaning solvents.
Any stationary source of hazardous air pollutants that is not a major source. Attainment Area An area considered to have air quality as good or better than the NAAQS.
Area source emissions are those air pollutants emitted from many individually small activities such as gasoline service stations, small paint shops, and consumer use of solvents. Area sources also include open burning associated with agriculture, forest management, and land clearing activities.
Toxic air pollution sources that emit less than 10 tons annually of a single hazardous air pollutant or less than 25 tons or more annually of a combination of hazardous air pollutants.
Under the Clean Air Act, any stationary source of hazardous air pollutants (HAPs) that is not a major source is considered to be an area source. Area sources of hazardous air pollutants (HAPs) are not generally subject to MACT standards (maximum achievable control technology) developed by US Environmental Protection Agency, although they may be subject to other requirements.
Any small source of non-natural air pollution that is not large enough to be classified as a major source or point source.
Small, non-transportation pollution sources that are too small and/or numerous to be included as point sources but may collectively contribute significantly to air pollution (e.g., dry cleaners).
Any source of air pollution that is released over a relatively small area but which cannot be classified as a point source. Such sources may include vehicles and other small engines, small businesses and household activities, or biogenic sources such as a forest that releases hydrocarbons. May be referred to as nonpoint source.
Area sources are sources of pollution which emit a substance or radiation from a specified area. For example, area sources of air pollution are air pollution sources which operate within a certain region. Locomotives operating on certain tracks or paths are examples of a line source, whereas locomotives operating within a railyard are an example of an area source of pollution.