SUBPART D—Primary Copper Smelting Subcategory (§421.40 to §421.47)
- 421.40—Applicability: Description of the primary copper smelting subcategory.
- 421.41—Specialized definitions.
- 421.42—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
- 421.43—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
- 421.44—Standards of performance for new sources.
- 421.46—Pretreatment standards for new sources.