U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

All TitlesTitle 40Chapter IPart 63Subpart LL - Subpart LL—National Emission Standards for Hazardous Air Pollutants for Primary Aluminum Reduction Plants
§ 63.840 - Applicability.
§ 63.841 - [Reserved]
§ 63.842 - Definitions.
§ 63.843 - Emission limits for existing sources.
§ 63.844 - Emission limits for new or reconstructed sources.
§ 63.845 - Incorporation of new source performance standards for potroom groups.
§ 63.846 - Emission averaging.
§ 63.847 - Compliance provisions.
§ 63.848 - Emission monitoring requirements.
§ 63.849 - Test methods and procedures.
§ 63.850 - Notification, reporting, and recordkeeping requirements.
§ 63.851 - Regulatory authority review procedures.
§ 63.852 - Applicability of general provisions.
§ 63.853 - Implementation and enforcement.
§ 63.854 - Work practice standards for potlines.
§ 63.855 - Alternative emissions limits for co-controlled new and existing anode bake furnaces.
§§ 63.856-63.859 - §[Reserved]
Appendix - Table 1 to Subpart LL of Part 63—Potline TF Limits for Emission Averaging
Appendix - Table 2 to Subpart LL of Part 63—Potline POM Limits for Emission Averaging
Appendix - Table 3 to Subpart LL of Part 63—Potline PM Limits for Emission Averaging
Appendix - Table 4 to Subpart LL of Part 63—Anode Bake Furnace Limits for Emission Averaging
Appendix Appendix A - Appendix A to Subpart LL of Part 63—Applicability of General Provisions
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