U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 63Subpart MMMM - Subpart MMMM—National Emission Standards for Hazardous Air Pollutants for Surface Coating of Miscellaneous Metal Parts and Products

WHAT THIS SUBPART COVERS
§ 63.3880 - What is the purpose of this subpart?
§ 63.3881 - Am I subject to this subpart?
§ 63.3882 - What parts of my plant does this subpart cover?
§ 63.3883 - When do I have to comply with this subpart?

EMISSION LIMITATIONS
§ 63.3890 - What emission limits must I meet?
§ 63.3891 - What are my options for meeting the emission limits?
§ 63.3892 - What operating limits must I meet?
§ 63.3893 - What work practice standards must I meet?

GENERAL COMPLIANCE REQUIREMENTS
§ 63.3900 - What are my general requirements for complying with this subpart?
§ 63.3901 - What parts of the General Provisions apply to me?

NOTIFICATIONS, REPORTS, AND RECORDS
§ 63.3910 - What notifications must I submit?
§ 63.3920 - What reports must I submit?
§ 63.3930 - What records must I keep?
§ 63.3931 - In what form and for how long must I keep my records?

COMPLIANCE REQUIREMENTS FOR THE COMPLIANT MATERIAL OPTION
§ 63.3940 - By what date must I conduct the initial compliance demonstration?
§ 63.3941 - How do I demonstrate initial compliance with the emission limitations?
§ 63.3942 - How do I demonstrate continuous compliance with the emission limitations?

COMPLIANCE REQUIREMENTS FOR THE EMISSION RATE WITHOUT ADD-ON CONTROLS OPTION
§ 63.3950 - By what date must I conduct the initial compliance demonstration?
§ 63.3951 - How do I demonstrate initial compliance with the emission limitations?
§ 63.3952 - How do I demonstrate continuous compliance with the emission limitations?

COMPLIANCE REQUIREMENTS FOR THE EMISSION RATE WITH ADD-ON CONTROLS OPTION
§ 63.3960 - By what date must I conduct performance tests and other initial compliance demonstrations?
§ 63.3961 -
§ 63.3962 - [Reserved]
§ 63.3963 - How do I demonstrate continuous compliance with the emission limitations?
§ 63.3964 - What are the general requirements for performance tests?
§ 63.3965 - How do I determine the emission capture system efficiency?
§ 63.3966 - How do I determine the add-on control device emission destruction or removal efficiency?
§ 63.3967 - How do I establish the emission capture system and add-on control device operating limits during the performance test?
§ 63.3968 - What are the requirements for continuous parameter monitoring system installation, operation, and maintenance?

OTHER REQUIREMENTS AND INFORMATION
§ 63.3980 - Who implements and enforces this subpart?
§ 63.3981 - What definitions apply to this subpart?
Appendix - Table 1 to Subpart MMMM of Part 63—Operating Limits if Using the Emission Rate With Add-On Controls Option
Appendix - Table 2 to Subpart MMMM of Part 63—Applicability of General Provisions to Subpart MMMM of Part 63
Appendix - Table 3 to Subpart MMMM of Part 63—Default Organic HAP Mass Fraction for Solvents and Solvent Blends
Appendix - Table 4 to Subpart MMMM of Part 63—Default Organic HAP Mass Fraction for Petroleum Solvent Groups a
Appendix - Table 5 to Subpart MMMM of Part 63—List of HAP That Must Be Counted Toward Total Organic HAP Content If Present at 0.1 Percent or More by Mass
Appendix Appendix A - Appendix A to Subpart MMMM of Part 63—Alternative Capture Efficiency and Destruction Efficiency Measurement and Monitoring Procedures for Magnet Wire Coating Operations
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