Regulations last checked for updates: May 15, 2025

Title 40 - Protection of Environment last revised: Nov 15, 2025
All TitlesTitle 40Chapter IPart 63Subpart MMMMMAppendix - Table 8 to Subpart MMMMM of Part 63—List of Hazardous Air Pollutants That Must Be Counted Toward Total HAP Content if Present at 0.1 Percent or More by Weight
Collapse to view onlyAppendix - Table 8 to Subpart MMMMM of Part 63—List of Hazardous Air Pollutants That Must Be Counted Toward Total HAP Content if Present at 0.1 Percent or More by Weight
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authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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