U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 147Subpart ZZ - Subpart ZZ—Wyoming
§ 147.2550 - State-administered program—Class I, III, IV, V and VI wells.
§ 147.2551 - State-administered program—Class II wells.
§ 147.2553 - EPA-administered program—Indian lands.
§ 147.2554 - Aquifer exemptions.
§ 147.2555 - Aquifer exemptions since January 1, 1999.
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