§ 421.60 Applicability: Description of the secondary copper subcategory
§ 421.61 Specialized definitions
§ 421.62 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
§ 421.63 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable
§ 421.64 Standards of performance for new sources
§ 421.65 Pretreatment standards for existing sources
§ 421.66 Pretreatment standards for new sources