U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 146Subpart D - Subpart D—Criteria and Standards Applicable to Class III Wells
View all text of Subpart D [§ 146.31 - § 146.34]
§ 146.31 - Applicability.

This subpart establishes criteria and standards for underground injection control programs to regulate Class III wells.

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