International Agency for Research on Cancer
IATA
International Air Transport Association; trade group representing international airlines.
IC
Incident Command
ICS
Incident Command System
IC-25
Inhibition Concentration, 25%; the effluent concentration at which growth or reproduction are reduced by 25% from that of controls.
ICAO
International Civil Aviation Organization; branch of the United Nations responsible for international air commerce.
ICC
Interstate Commerce Commission
ICP
Inductively Coupled Plasma: Both an analytical method and an instrument used for metal determinations.
ICS
Incident Command System
ID
Identification Number (DOT)
Identification (ID) Number
A DOT term which is four-digit UN (United Nations) or NA ( North America ) number found in Column 4 of Hazardous Materials Table. Each proper shipping name is assigned a corresponding identification number.
IDLH
Immediately Dangerous to Life and Health
IMDG
International Maritime Dangerous Goods
IMDGC
International Maritime Dangerous Goods Codes
IMO
International Marine Organization
INCIN
Incineration
in situ
Refers to treatment or disposal in place, e.g., waste or soil is treated in place without excavation or without breaking the Earth’s surface.
in-situ leaching
The process of extracting metals or other minerals from ore by allowing an acid-containing liquid to flow through the ground that contains the minerals. The minerals are dissolved by the acid (leached) and captured when the liquid is collected. Leaching is also used to recover minerals from waste rock that contains too low a concentration of the mineral to be worth recovering by typical extraction methods.
Ion Exchange
A reversible process in which soluble ionic contaminants (such as dissolved metals) are adsorbed on a solid ion exchange media (naturally occurring materials or polymeric resins containing charged functional groups that electrostatically attract ions of opposite charge. The media can hold a finite amount of contaminant and this amount is referred to as the media’s capacity. When the contaminant capacity of the media is reached, the media is removed from service and the contaminants are stripped by a regeneration process. Regeneration restores the capacity of the media so it can be returned to service.
IPY
Inches Per Year
IR
Infrared Spectrometer
IR
Intrinsic Remediation; see natural attenuation
IRP
Installation Restoration Program
IRRC
Investor Responsibility Research Center
ISO
International Standards Organization
Isokinetic Sampling
Sampling in which the linear velocity of the gas entering the sampling nozzle is equal to that of the undisturbed gas steam at the sample point.
Isotope
A nuclide having the same number of protons but a different number of neutrons.
ITC
Interagency Testing Committee (TSCA)
IWTP
Industrial Wastewater Treatment Plant