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Definição Inglês:
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Non-point sources of pollution: are often termed [sources of] 'diffuse' pollution and refer to those inputs and impacts which occur over a wide area and are not easily attributed to a single source. They are often associated with particular land uses, as opposed to individual point source discharges. Nonpoint source (NPS) areas of focus are land use and land cover driven. Categories of nonpoint source[s of] pollution include Agriculture, Forestry, Hydromodification and Habitat Alteration, Marinas and Boating, Abandoned Mines: Resource Extraction (Abandoned Mine Drainage), Roads, Highways and Bridges, Urban Areas, Wetland/Riparian Areas. Different types of land use will influence what types of Nonpoint Source water quality concerns affect a given waterbody. Under Section 319 of the Clean Water Act, states, territories and tribes must identify categories of nonpoint source pollution as part of an assessment report required for obtaining a Section 319 grant. (From: EPA: US Environmental Protection Agency. Available in: https://www.epa.gov/polluted-runoff-nonpoint-source-pollution/types-nonpoint-source) Nonpoint source of water pollution: Any source of water pollution that does not meet the legal definition of "point source" in section 502(14) of the Clean Water Act. (From: EPA - Environmental Protection Agency. Available in: https://www.epa.gov/polluted-runoff-nonpoint-source-pollution/what-nonpoint-source) A nonpoint source includes stationary and mobile sources that are individually small compared to point sources, but collectively large, such as wood stoves, motor vehicles and lawnmowers. It also includes sources whose emissions are spread out over a broad area, such as prescribed burning.” (British Columbia Air Quality. http://www.bcairquality.ca/101/pollutants-sources.html) |