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Glossary

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ADEQ - Arizona Department of Environmental Quality. State agency charged with protecting the Arizona environment.

BACT - Best Available Control Technology. An emissions limitation, based on the maximum degree of air pollution reduction, that is achievable through certain production methods, after taking into account energy, economic, and environmental impacts and other costs.

BMP - Best Management Practice. Methods determined to be the most effective, practical means of preventing or reducing pollution.

Clean Air Act - The original Clean Air Act was passed in 1963, but our national air pollution control program is actually based on the 1970 version of the law. The 1990 Clean Air Act Amendments are the most far-reaching revisions of the 1970 law.

EPA - Environmental Protection Agency. Federal agency charged with protecting the environment.

FIP - Federal Implementation Plan. A federally implemented plan to achieve attainment of air quality standards when a state cannot develop an adequate plan.

HAPs - Hazardous Air Pollutants. Chemicals that cause serious health and environmental effects. Health effects include cancer, birth defects, nervous system problems and death. Hazardous air pollutants are released by sources such as chemical plants, dry cleaners, printing plants, and motor vehicles (cars, trucks, buses, etc.)

MACT - Maximum Available Control Technology. The emission standard requiring the maximum reduction of hazardous emissions while taking cost and feasibility into account.

Mobile Source - Moving objects that release pollution; mobile sources include cars, trucks, buses, planes, trains, motorcycles and gasoline-powered lawn mowers. Mobile sources are divided into two groups: road vehicles, which includes cars, trucks and buses, and non-road vehicles, which includes trains, planes and lawn mowers.

NESHAPS - National Emission Standards for Hazardous Air Pollutants. Emissions standards set by EPA to control certain air pollutants.

Nonroad Source - Also referred to as "off-road" or "off-highway," the nonroad category includes outdoor power equipment, recreational vehicles, farm and construction equipment, boats, and locomotives.

Onroad Source - All vehicles that are driven on the roadway.

Point Source - Any stationary source for which individual records are collected and maintained. A facility that releases more than a specified amount of a pollutant.

Pollutant - Generally, any substance introduced into the environment that adversely effects the usefulness of a resource.

RACT - Reasonably Available Control Technology. Control technology that is reasonably available and both technologically and economically feasible.

SIP - State Implementation Plan. A detailed description of the programs a state will use to carry out its responsibilities under the Clean Air Act. A SIP is a collection of the regulations used by a state to reduce air pollution. The EPA must approve each SIP and the public is given opportunities to participate in the review and approval.

Stationary Source - A source that remains at a fixed location while emitting pollutants. Any non-mobile source of pollutants.