[Code of Federal Regulations] [Title 40, Volume 24] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR191.21] [Page 12] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 191_ENVIRONMENTAL RADIATION PROTECTION STANDARDS FOR MANAGEMENT Subpart C_Environmental Standards for Ground-Water Protection Sec. 191.21 Applicability. Source: 58 FR 66415, Dec. 20, 1993, unless otherwise noted. (a) This subpart applies to: (1) Radiation doses received by members of the public as a result of activities subject to subpart B of this part; and (2) Radioactive contamination of underground sources of drinking water in the accessible environment as a result of such activities. (b) This subpart does not apply to: (1) Disposal directly into the oceans or ocean sediments; (2) Wastes disposed of before the effective date of this subpart; and (3) The characterization, licensing, construction, operation, or closure of any site required to be characterized under section 113(a) of Public Law 97-425, 96 Stat. 2201.