U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 40Chapter IPart 63Subpart XXX - Subpart XXX—National Emission Standards for Hazardous Air Pollutants for Ferroalloys Production: Ferromanganese and Silicomanganese
§ 63.1620 - Am I subject to this subpart?
§ 63.1621 - What are my compliance dates?
§ 63.1622 - What definitions apply to this subpart?
§ 63.1623 - What are the emissions standards for new, reconstructed and existing facilities?
§ 63.1624 - What are the operational and work practice standards for new, reconstructed, and existing facilities?
§ 63.1625 - What are the performance test and compliance requirements for new, reconstructed, and existing facilities?
§ 63.1626 - What monitoring requirements must I meet?
§ 63.1627 - What notification requirements must I meet?
§ 63.1628 - What recordkeeping and reporting requirements must I meet?
§ 63.1629 - Who implements and enforces this subpart?
§§ 63.1630-63.1649 - §[Reserved]
§ 63.1650 - Applicability and compliance dates.
§ 63.1651 - Definitions.
§ 63.1652 - Emission standards.
§ 63.1653 - Opacity standards.
§ 63.1654 - Operational and work practice standards.
§ 63.1655 - Maintenance requirements.
§ 63.1656 - Performance testing, test methods, and compliance demonstrations.
§ 63.1657 - Monitoring requirements.
§ 63.1658 - Notification requirements.
§ 63.1659 - Reporting requirements.
§ 63.1660 - Recordkeeping requirements.
§ 63.1661 - Implementation and enforcement.
§§ 63.1662-63.1679 - §[Reserved]
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