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Regulations last checked for updates: May 23, 2025

Title 40 - Protection of Environment last revised: Apr 23, 2028
All TitlesTitle 40Chapter IPart 63Subpart TTT - Subpart TTT—National Emission Standards for Hazardous Air Pollutants for Primary Lead Smelting
  • § 63.1541 - Applicability.
  • § 63.1542 - Definitions.
  • § 63.1543 - Standards for process and process fugitive sources.
  • § 63.1544 - Standards for fugitive dust sources.
  • § 63.1545 - Compliance dates.
  • § 63.1546 - Performance testing.
  • § 63.1547 - Monitoring requirements.
  • § 63.1548 - Notification requirements.
  • § 63.1549 - Recordkeeping and reporting requirements.
  • § 63.1550 - Delegation of authority.
  • § 63.1551 - Affirmative defense for exceedance of emission limit during malfunction.
  • Appendix - Table 1 to Subpart TTT of Part 63—General Provisions Applicability to Subpart TTT
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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