10 C.F.R. § 960.3-1-2 Diversity of rock types.
Title 10 - Energy
Consideration shall be given to a variety of geologic media in which sites for the development of repositories may be located. To the extent practicable, and with due consideration of candidate sites characterized previously or approved for such characterization if the circumstances apply, sites recommended as candidate sites for characterization shall have different types of host rock.
Title 10: Energy
PART 960—GENERAL GUIDELINES FOR THE PRELIMINARY SCREENING OF POTENTIAL SITES FOR A NUCLEAR WASTE REPOSITORY
Subpart B—Implementation Guidelines
§ 960.3-1-2 Diversity of rock types.