40 CFR § 147.302 State, Tribal, and EPA-Administered Underground Injection Control Programs

§ 147.302 Aquifer exemptions.

Current through Aug 22, 2025 · Read all of Part 147

⚠ 2 pending changes to Part 147

Pending amendment Link to an amendment published at 91 FR 64786, Oct. 13, 2026.

(a) This section identifies any aquifers of their portions exempted in accordance with §§ 144.7(b) and 146.4 of this chapter at the time of program promulgation. EPA may in the future exempt other aquifers or portions according to applicable procedures without codifying such exemptions in this section. An updated list of exemptions will be maintained in the Regional office.

(b) For all aquifers into which existing Class II wells are injecting, those portions within a 1/4 mile radius of the well are exempted for the purpose of Class II injection activities only.

← § 147.301 EPA-administered program—Class I, III, IV, V wells and Indian lands.§ 147.303 Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. →