Glossary D

The Environmental Glossary. Letter D +++ Popular Articles: 'Deposition', 'Degradation', 'Diesel'

Degradable refers to a substance that can be degraded, decomposed or otherwise broken down into a more simple chemical structure over time via chemical or biological means.

Deutsch: Umweltverschlechterung / Español: Degradación Ambiental / Português: Degradação Ambiental / Français: Dégradation de l'Environnement / Italiano: Degradazione Ambientale /

A DEGRADATION is the sum of natural processes which cause a decrease in PCB mass (weight, not quantity) by either Dechlorination or outright destruction of PCB molecules.

A Degree-Day is a rough measure used to estimate the amount of heating required in a given area; is defined as the difference between the mean daily temperature and 65 degrees Fahrenheit.

A Deionized water is Common industrial water used to remove contaminants from Products and equipment (Brown and Caldwell, 1

A Delegated State is a state (or other governmental entity such as a tribal government) that has received authority to administer an Environmental regulatory program in lieu of a federal counterpart.

A Delist is Use of the petition process to have a facility's toxic designation rescinded.

A Demand Side Management (DSM) is an attempt by utilities to reduce customers' demand for electricity or energy by encouraging efficiency.

A Demand-side Waste Management is Prices whereby consumers use purchasing decisions to communicate to product manufacturers that they prefer environmentally sound products packaged with the least amount of waste, made from recycled or recyclable materials, and containing no hazardous substances.

A demersal is fish that live on or near the ocean bottom. They are often called Benthic fish, groundfish, or bottom fish.

A Demineralization is a treatment process that removes dissolved minerals from water.

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