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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 40
Chapter I
Part 147
Subpart BB - Subpart BB—Montana
§ 147.1350 - State-administered programs—Class II wells.
§ 147.1351 - EPA-administered program.
§ 147.1352 - Aquifer exemptions.
§ 147.1353 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule.
§ 147.1354 - Existing Class II enhanced recovery and hydrocarbon storage wells authorized by rule.
§ 147.1355 - Requirements for all wells.
Appendix Appendix A - Appendix A to Subpart BB of Part 147—State Requirements Incorporated by Reference in Subpart BB of Part 147 of the Code of Federal Regulations
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