deq.state.or.us

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Definitions (81)

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sulfur dioxide


A colorless gas that can that can bother the lungs. It is formed when fossil fuels that contain sulfur are burned. It is also given off when volcanoes erupt.
Source: deq.state.or.us

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atmosphere


The layer of air surrounding the earth.
Source: deq.state.or.us

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wetlands


Areas such as tidal flats or swamps covered by shallow water, or where the water table is at or near the surface.
Source: deq.state.or.us

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water table


The upper level of groundwater.
Source: deq.state.or.us

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watershed


The area drained by a given stream.
Source: deq.state.or.us

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water pollution


The addition of enough harmful or objectionable material to damage water quality.
Source: deq.state.or.us

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volatile


Any substance that evaporates at low temperature.
Source: deq.state.or.us

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ventilation


Atmospheric air circulation determined by wind speed and mixing height. The degree of ventilation is an indication of how well air pollution will be dispersed.
Source: deq.state.or.us

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urban runoff


Storm water from city streets, usually carrying litter and organic wastes.
Source: deq.state.or.us

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turbidity


Hazy air due to the presence of particles and pollutants; a similar cloudy condition in water due to suspended silt or organic matter.
Source: deq.state.or.us


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