CFR›Title 40›Chapter I›Part 191›Subpart B ContainsSections 191.11–191.17CorpusDaily eCFRDisplayed edition2026-06-08Last updated2026-06-08 Subpart B—Environmental Standards for Disposal Sections 191.11 § 191.11 Applicability. 191.12 § 191.12 Definitions. 191.13 § 191.13 Containment requirements. 191.14 § 191.14 Assurance requirements. 191.15 § 191.15 Individual protection requirements. 191.16 § 191.16 Alternative provisions for disposal. 191.17 § 191.17 Effective date. Previous Appendix C to Part 191 Appendix C to Part 191—Guidance for Implementation of Subpart B Next C Subpart C—Environmental Standards for Ground-Water Protection