Slice of the Plume [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 slice of the plume means “a cross-section of the plume of contamination with sufficient thickness parallel to the prevalent direction of flow of the plume that it contains the representative volume.”