Regulations last checked for updates: May 24, 2025

Title 40 - Protection of Environment last revised: Apr 24, 2028
All TitlesTitle 40Chapter IPart 63Subpart RRRRAppendix - Table 5 to Subpart RRRR of Part 63—List of Hazardous Air Pollutants That Must Be Counted Toward Total Organic HAP Content if Present at 0.1 Percent or More by Mass
Collapse to view onlyAppendix - Table 5 to Subpart RRRR of Part 63—List of Hazardous Air Pollutants That Must Be Counted Toward Total Organic HAP Content if Present at 0.1 Percent or More by Mass
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authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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