Pollutant: Particles, gases, or liquid aerosols in the atmosphere which have an undesirable effect on humans or their surroundings. Something unfavorable to health and life that has been added to the environment.

 

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Pollutant: Particles, gases, or liquid aerosols in the atmosphere which have an undesirable effect on humans or their surroundings. Something unfavorable to health and life that has been added to the e . . . View Full Definition

Nitrogen: Element number 7, a colorless, odorless, tasteless gas that makes up about 80% of the earth's atmosphere.

Nonpoint Source Pollution: Pollutants that are not discharged or emitted from a specific 'point' source, such as a pipe or smokestack. Nonpoint water pollutants are often carried from dispersed, diverse sources into w . . . View Full Definition

National Ambient Air Quality Standards (NAAQS): National standards set by the Environmental Protection Agency under authority of the Clean Air Act: NAAQS define the maximum allowable concentrations of specified air pollutants in outdoor ( . . . View Full Definition

Groundwater: Water under the earths surface, regardless of the geological structure in which the water is standing or flowing. It does not include water in underground streams that have identifiable bank . . . View Full Definition

Filter Strip: An area of vegetation, generally narrow and long, that slows the rate of runoff, allowing sediments, organic matter, and other pollutants that are being conveyed by the water to be removed. . . . View Full Definition

Non-Road Emissions: Pollutants emitted by non-road engines and non-road vehicles, e.g., farm and construction equipment, gasoline-powered lawn and garden equipment, and power boats and outboard motors. The Clea . . . View Full Definition

Ozone (O3): A nearly colorless gas and a form of oxygen (O2). It is composed of an oxygen molecule made up of three oxygen atoms instead of two.

Vegetative Controls: Nonpoint source pollution control practices that involve planting cover crops to reduce erosion and minimize loss of pollutants.

Surface Runoff: Precipitation, snow melt, or irrigation water in excess of what can infiltrate the soil surface and be stored in small surface depressions: a major cause of erosion and transporter of nonpoi . . . View Full Definition