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Regulations last checked for updates: Oct 30, 2025
Title 40 - Protection of Environment last revised: Sep 30, 2029
All Titles
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)
§ 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 -
§§ 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
authority:
42 U.S.C. 7401
source:
57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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