Subpart NN. Subpart NN—Pennsylvania
- § 147.1950 - State-administered program. [Reserved]
- § 147.1951 - EPA-administered program.
- § 147.1952 - Aquifer exemptions.
- § 147.1953 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule.
- § 147.1954 - Existing Class II enhanced recovery and hydrocarbon storage wells authorized by rule.
- § 147.1955 - Requirements for wells authorized by permit.