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Subpart QQQ—National Emission Standards for Hazardous Air Pollutants for Primary Copper Smelting

National Emission Standards for Hazardous Air Pollutants for Primary Copper Smelting

ContainsSections 63.1440–63.1459; Appendices Figure 1 to Subpart QQQ of Part 63–Table 4 to Subpart QQQ of Part 63
CorpusDaily eCFR
Displayed edition2026-04-27
Last updated2026-04-27

Subpart QQQ—National Emission Standards for Hazardous Air Pollutants for Primary Copper Smelting

Contents

Source89 FR 41692, May 13, 2024, unless otherwise noted.