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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Oct 01, 2023
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Title 40
Chapter I
Part 421
Subpart AA - Subpart AA—Secondary Tin Subcategory
§ 421.290 - Applicability: Description of the secondary tin subcategory.
§ 421.291 - Specialized definitions.
§ 421.292 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
§ 421.293 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
§ 421.294 -
§ 421.295 - Pretreatment standards for existing sources.
§ 421.296 - Pretreatment standards for new sources.
§ 421.297 - [Reserved]
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