§ 421.70 Applicability: Description of the primary lead subcategory
§ 421.71 Specialized definitions
§ 421.72 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
§ 421.73 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable
§ 421.74 Standards of performance for new sources
§ 421.75 Pretreatment standards for existing sources
§ 421.76 Pretreatment standards for new sources