Subpart C. Subpart C—Authorization of Underground Injection by Rule

• § 144.21 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells.
• § 144.22 - Existing Class II enhanced recovery and hydrocarbon storage wells.
• § 144.23 - Class IV wells.
• § 144.24 - Class V wells.
• § 144.25 - Requiring a permit.
• § 144.26 - Inventory requirements.
• § 144.27 - Requiring other information.
• § 144.28 - Requirements for Class I, II, and III wells authorized by rule.