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The follow definitions are used in the description of the cleanup technologies

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ignitableThat which can create fires under certain conditions. Examples of ignitable wastes include liquids, such as solvents that readily catch fire.
immunoassayA technology used to measure biological reactions to individual compounds or classes of compounds. See technology description of Immunoassay.
impermeableNot capable of spreading or diffusing through the openings or interstices of a medium.
in-situIn its original place, unexcavated, or unmoved
incinerationA treatment technology that involves the burning of certain types of solid, liquid, or gaseous materials under controlled conditions to destroy hazardous waste. See technology description of Incineration.
information repositoryA location in a public building that is convenient for local residents, such as a public school, city hall, or library, that contains information about a Superfund site, including technical reports and reference documents.
infrared monitor A device used to monitor the heat signature of an object. It may be used to detect buried objects in soil.
innovative technologyA process that has been tested and used as a treatment for hazardous waste or other contaminated materials, but lacks a long history of full-scale use and information about its cost and how well it works sufficient to support prediction of its performance under a variety of operating conditions.
inorganic compoundA compound that generally does not contain carbon atoms, although carbonate and bicarbonate compounds are notable exceptions. Examples of inorganic compounds include various acids, potassium hydroxide, and metals.
institutional controlsA legal or institutional measure which subjects a property owner to limit activities at or access to a particular property. Fences, posting or warning signs, and zoning and deed restrictions are examples of institutional controls.
ion exchangeA treatment method used to remove and exchange ions from water. See technology description of Ion Exchange.
ionAn atom, group of atoms, or molecule that has gained or lost electrons, thus causing the atom to become either positively or negatively charged.
isotopeOne of two or more atoms of the same element that have the same number of protons but different number of neutrons. For example, hydrogen has 1 proton, no neutrons; deuterium has 1 proton, 1 neutron; tritium has 1 proton, two neutrons. They are all isotopes of hydrogen.

Note: A majority of the terms and definitions are based on the U.S. Environmental Protection Agency's Brownfields Innovative Technology Glossary . Some definitions have been modified/enhanced to support the Tech Tree text.

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This page was last updated OCTOBER 26, 1998
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