Subpart K—Primary Columbium-Tantalum Subcategory
- §421.110 Applicability: Description of the primary columbium-tantalum subcategory.
- §421.111 Specialized definitions.
- §421.112 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
- §421.113 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
- §421.114 Standards of performance for new sources.
- §421.115 Pretreatment standards for existing sources.
- §421.116 Pretreatment standards for new sources.
- §421.117 [Reserved]