A unit available to provide electric power to the grid. See definition for operating unit below.
Division of cleanup of a release site into discrete action units that eliminate or mitigate a release, a threat of a release, or an exposure pathway.
An operable unit includes a discrete action that is an incremental step toward comprehensively addressing site problems. This discrete portion of a remedial response manages migration or eliminates or mitigates a release, threat of release or pathway of exposure. NAF Adak has one operable unit, referred to as Operable Unit A. to top
a discrete portion of a response action under CERCLA
a group of toxic waste sites
The cleanup of a site can be divided into a number of operable units, depending on the complexity of the problems associated with a site. Operable units may address geographical portions of a site, specific site problems, or initial phases of an action, or may consist of any set of actions performed over time or any actions that are concurrent but located in different parts of a site.
A discrete part of the entire response action that decreases a release, threat of release, or pathway of exposure (40 CFR 300.5).
Specified portion or area within a Superfund site where investigations and remedial activities proceed on a schedule separate from the activities for the main site (see the FAQ on Operable Units for more information).
Term for each of a number of separate activities undertaken as part of a Superfund site cleanup.
An administrative term used to identify a portion of a site that can be addressed by a distinct investigation and/or cleanup approach. For example, groundwater contamination at a site may be considered as one operable unit, and soil contamination at the same site may be dealt with as a second operable unit. An operable unit can receive specific investigation, and a particular remedy may be proposed. A Record of Decision is prepared for each operable unit.
