§ 421.220 Applicability: Description of the secondary molybdenum and vanadium subcategory
§ 421.221 Specialized definitions
§ 421.222 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
§ 421.223 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable
§ 421.224 Standards of performance for new sources
§ 421.226 Pretreatment standards for new sources