Primary Copper Smelting Area Sources: National Emissions Standards for Hazardous Air Pollutants (NESHAP)
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Rule Summary
Primary copper smelting is the industry which refines copper sulfide ore concentrate from mined ore to produce anode grade copper, using pyrometallurgical processes. Pyrometallurgical processes use high temperature furnaces to smelt or refine ores to produce pure metals or metal oxides. The final rule for area sources will ensure emissions of air toxics are minimized and improve compliance assurance.
Rule History
05/01/2024 - Final Rule: Primary Copper NESHAP (pdf)
07/24/2023 - Supplemental rule (pdf) (335 KB)
01/11/2022 - Proposed rule (87 FR 1616)
07/03/2007 - Direct final rule (July 2007) (pdf) (158 KB)
01/23/2007 - Final rule (January 2007) (pdf) (260 KB)
10/06/2006 - Proposed rule (40 CFR Part 63) (pdf) (270 KB)
Related Rules
Primary Copper Smelting: National Emissions Standards for Hazardous Air Pollutants (NESHAP)
Additional Resources
Fact Sheet: Final Amendments to Air Toxics Standards for Primary Copper Smelting (pdf)
Fact Sheet: Proposed Amendments to Air Toxics Standards for Primary Copper Smelting (pdf)