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Incident Command System (ICS) : The organization wherein one person, normally the Fire Chief, is in charge of both an integrated, comprehensive emergency response team and the emergency incident site.

Incinerators : Controlled disposal systems that burn solid waste or other materials and reduce volume of waste. Air pollution and toxic ash are problems associated with incineration.

Independent Power Producer (IPP) : An electricity generator that sells power to others but is not owned by a utility.

Independent System Operator (ISO) : An impartial, independent third party responsible for maintaining secure and economic operation of an open access transmission system on a regional basis.

Industrial Waste : Materials produced in or eliminated from an industrial operation, such as liquid wastes, sludge, solid wastes, and hazardous wastes.

Industrialized Countries: Nations whose economies are based on industrial production and the conversion of raw materials into products and services, with the use of machinery and artificial energy fossil fuels and nuclear fission (i.e., U.S., Japan, the countries of Europe).

Inert Ingredients: Substances that are not active, such as water, petroleum distillates, or soaps. Inert ingredients do not attack a particular pest, but some are chemically or biologically active and can cause health and environmental problems.

Insecticides : Substances used to kill insects and prevent infestation.

Inversion : An atmospheric condition caused by increasing temperature with elevation, resulting in a layer of warm air preventing the rise of cooler air trapped beneath. This condition prevents the rise of pollutants that might otherwise be dispersed. Trapped pollutants near the ground increase ozone to harmful levels.

Investor-Owned Utility (IOU) : A utility with stock-based ownership.

Irritant : A substance that can cause irritation of the skin, eyes, or respiratory system. An irritant can cause an acute effect from a single high-level exposure, or chronic effects from repeated, low-level exposures. Some examples of irritants are chlorine, nitric acid, and various pesticides.


Wilson Community College | P.O. Box 4305 • 902 Herring Avenue | Wilson, NC 27893 | Phone: (252) 291-1195 | Fax: (252) 243-7148