Plume of Contamination [Energy] Law and Legal Definition

According to 10 CFR 63.302 [Title 10 – Energy; Chapter I -- Nuclear Regulatory Commission; Part 63 – Disposal of High-Level Radioactive Wastes in a Geologic Repository at Yucca Mountain, Nevada; Subpart L -- Postclosure Public Health and Environmental Standards], the term plume of contamination means “that volume of ground water in the predominant direction of ground-water flow that contains radioactive contamination from releases from the Yucca Mountain repository. It does not include releases from any other potential sources on or near the Nevada Test Site.”