§ 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