Subpart C. Subpart C—Secondary Aluminum Smelting Subcategory

• § 421.30 - Applicability: Description of the secondary aluminum smelting subcategory.
• § 421.31 - Specialized definitions.
• § 421.32 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
• § 421.33 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
• § 421.34 - Standards of performance for new sources.
• § 421.35 - Pretreatment standards for existing sources.
• § 421.36 - Pretreatment standards for new sources.
• § 421.37 - [Reserved]