Government permission for a delay or exception in the application of a given law, ordinance, or regulation.
A Department of Energy decision making process to judge the prospects for geologic disposal of high-level radioactive wastes at Yucca Mountain based on
(1) specific design work on the critical elements of the repository and waste package,
(2) a total system performance assessment that will describe the probable behavior of the repository,
(3) a plan and cost estimate for the work required to complete a license application, and
(4) an estimate of the costs to construct and operate the repository (see 10 CFR Part 60).
Volatile Organic Compound (VOC)
Any organic compound that participates in atmospheric photochemical reactions except those designated by EPA as having negligible photochemical reactivity.