§ 471.50 Applicability; description of the refractory metals forming subcategory
§ 471.51 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
§ 471.52 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
§ 471.53 New source performance standards (NSPS)
§ 471.54 Pretreatment standards for existing sources (PSES)
§ 471.55 Pretreatment standards for new sources (PSNS)