CFR›Title 40›Chapter I›Part 149›Subpart A ContainsSections 149.1–149.3CorpusDaily eCFRDisplayed edition2026-05-14Last updated2026-05-14 Subpart A—Criteria for Identifying Critical Aquifer Protection Areas Sections 149.1 § 149.1 Purpose. 149.2 § 149.2 Definitions. 149.3 § 149.3 Critical Aquifer Protection Areas. Source52 FR 23986, June 26, 1987, unless otherwise noted. Next B Subpart B—Review of Projects Affecting the Edwards Underground Reservoir, A Designated Sole Source Aquifer in the San Antonio, Texas Area