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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 40
Chapter I
Part 421
Subpart T - Subpart T—Secondary Molybdenum and Vanadium Subcategory
§ 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.
§ 421.225 - [Reserved]
§ 421.226 - Pretreatment standards for new sources.
§ 421.227 - [Reserved]
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