Glossary A

The Environmental Glossary. Letter A +++ Popular Articles: 'Absorption', 'Abatement Debris', 'Acclimatization'

An allowance is a tradeable permit to emit a specific amount of a pollutant. For example, under the Acid Rain Program, one allowance permits the Emissions of one ton of sulfur dioxide

An Alluvial is Relating to and/or sand deposited by flowing water.

An alluvium is deposits of clay, silt, sand, gravel, or other particulate material that has been deposited by a stream or other body of running water in a streambed, on a Flood plain,

An Alpha particle consists of two neutrons and two protons bound as a single particle that is emitted from the nucleus of certain radioactive isotopes in the process of decay.

An Alternate Method is any method of sampling and analyzing for an air or water Pollutant that is not a reference or equivalent method but that has been demonstrated in specific cases

An Alternative Compliance is a policy that allows facilities to choose among methods for achieving emission-reduction or risk -reduction instead of command-and control regulations that

An alternative energy is Energy that is not popularly used and is usually environmentally sound, such as solar or wind Energy (as opposed to fossil fuels).

alternative fibers are fibers produced from non-wood sources for use in paper making.

Alternative Fuels are Substitutes for traditional liquid, oil-derived motor vehicle fuels like gasoline and diesel.

Alternative Remedial Contract Strategy Contractors are Government contractors who provide project management and