Code of Federal Regulations > Title 40 > Chapter I > Part 63 > Subpart B - Subpart B—Requirements for Control Technology Determinations for Major Sources in Accordance With Clean Air Act Sections, Sections 112(g) and 112(j)

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Sep 16, 2025

§ 63.40 - Applicability of §through 63.44.

§ 63.41 - Definitions.

§ 63.42 - Program requirements governing construction or reconstruction of major sources.

§ 63.43 - Maximum achievable control technology (MACT) determinations for constructed and reconstructed major sources.

§ 63.44 - Requirements for constructed or reconstructed major sources subject to a subsequently promulgated MACT standard or MACT requirement.

§§ 63.45-63.49 - §[Reserved]

§ 63.50 - Applicability.

§ 63.51 - Definitions.

§ 63.52 - Approval process for new and existing affected sources.

§ 63.53 - Application content for case-by-case MACT determinations.

§ 63.54 - Preconstruction review procedures for new affected sources.

§ 63.55 - Maximum achievable control technology (MACT) determinations for affected sources subject to case-by-case determination of equivalent emission limitations.

§ 63.56 - Requirements for case-by-case determination of equivalent emission limitations after promulgation of subsequent MACT standard.

Appendix - Table 1 to Subpart B of Part 63—Section 112(j) Part 2 Application Due Dates

Appendix - Table 2 to Subpart B of Part 63—MON Source Categories