CFR›Title 40›Chapter I›Part 192›Subpart C ContainsSections 192.20–192.23CorpusDaily eCFRDisplayed edition2026-05-18Last updated2026-05-18 Subpart C—Implementation Sections 192.20 § 192.20 Guidance for implementation. 192.21 § 192.21 Criteria for applying supplemental standards. 192.22 § 192.22 Supplemental standards. 192.23 § 192.23 Effective date. Previous B Subpart B—Standards for Cleanup of Land and Buildings Contaminated with Residual Radioactive Materials from Inactive Uranium Processing Sites Next D Subpart D—Standards for Management of Uranium Byproduct Materials Pursuant to Section 84 of the Atomic Energy Act of 1954, as Amended