Any substance that evaporates readily. — Source: Arizona Department of Environmental Quality

A measure of how far and how well an observer can see through the atmosphere. — Source: Arizona Department of Environmental Quality

The potential of the atmosphere to disperse airborne pollutants, such as smoke from a prescribed fire. It is based on both the transport winds and

Any agent (person, animal or microorganism) that carries and transmits an infectious pathogen into another living organism. — Source: Arizona Department of Environmental Quality

Vapor-phase migration of volatile organic compounds or volatile inorganic compounds into occupied buildings from underlying contaminated groundwater or soil. — Source: Arizona Department of Environmental

The gas given off by substances that are solids or liquids at ordinary atmospheric pressure and temperatures. — Source: Arizona Department of Environmental Quality

The zone between land surface and the water table within which the moisture content is less than saturation (except in the capillary fringe) and pressure

Spent motor oil from passenger cars and trucks collected at specified locations for recycling. — Source: Arizona Department of Environmental Quality

Any of the following hazardous wastes (batteries, pesticides, mercury-containing equipment and lamps) that are managed under the universal waste requirements of 40 CFR part 273.

natural or man-made site that has outstanding universal value and meets at least one of 10 conditions decided by UNESCO, the United Nations Educational, Scientific

A tank located at least partially underground and designed to hold gasoline or other petroleum products or chemicals. — Source: Arizona Department of Environmental Quality

The program under the Safe Drinking Water Act that regulates the use of wells to pump fluids into the ground. — Source: Arizona Department of

A cloudy condition in water due to suspended silt or organic matter. The degree of turbidity is measured with a turbidometer. — Source: Arizona Department

A stable, low boiling-point colorless liquid that is toxic if inhaled. Used as a solvent or metal degreasing agent and in other industrial applications. —

Wastewater that has been subjected to one or more physical, chemical, and biological processes to reduce its potential of being health hazard. — Source: Arizona

A measure of the average rate of the horizontal movement of air within the mixing layer. — Source: Arizona Department of Environmental Quality

The horizontal or vertical displacement of a pollutant from its emission source that can be carried through the atmosphere over some distance. — Source: Arizona

Any transportation-related facility such as loading docks, parking areas, storage areas, or other similar areas where shipments of hazardous waste are temporarily held during the

A poisonous substance that can either be natural (produced by plants, animals or bacteria) or manufactured. — Source: Arizona Department of Environmental Quality

EPA program that tracks the management of toxic chemicals that may pose a threat to human health and the environment. — Source: Arizona Department of