['V' WORDS]

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The follow definitions are used in the description of the cleanup technologies

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'V' WORDS

vadose zone	The area between the surface of the land and the aquifer water table in which the moisture content is less than the saturation point and the pressure is less than atmospheric.
vapor	The gaseous phase of any substance that is liquid or solid at atmospheric temperature and pressures. Steam is an example of a vapor.
viscosity	The quality of having a heavy, gluey, resistance to flow.
volatile organic compounds (VOCs)	One of a group of carbon-containing compounds that evaporate readily at room temperature. Examples of VOCs include trichloroethane, trichloroethylene, benzene, toluene, ethylbenzene, and xylene (BTEX).
volatile	Evaporating readily at normal pressures and temperatures.
volatilization	The process of transfer of a chemical from the aqueous or liquid phase to the gas phase.

Note: A majority of the terms and definitions are based on the U.S. Environmental Protection Agency's Brownfields Innovative Technology Glossary . Some definitions have been modified/enhanced to support the Tech Tree text.

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This page was last updated OCTOBER 26, 1998
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