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Area sources are sources of pollution which emit a substance or radiation from a specified area. ==Air pollution== For example, area sources of air pollution are air pollutant emission sources which operate within a certain locale. The U.S. Environmental Protection Agency has categorized 70 different categories of air pollution area source.〔Arnold W. Reitze, J. B. Shapiro and Maurice C. Shapiro. 2005〕 Locomotives operating on certain linear tracks are examples of a line source, whereas locomotives operating within a railyard are an example of an area source of pollution. Other area sources of air pollution are: * Multiple flue gas stacks within a single industrial plant * Open burning and forest fires * Evaporation losses from large spills of volatile liquids 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Area source (pollution)」の詳細全文を読む スポンサード リンク
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