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Code of Federal Regulations (Last Updated: November 8, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter N - Effluent Guidelines and Standards |
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Part 421 - Nonferrous Metals Manufacturing Point Source Category |
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Subpart B - Primary Aluminum Smelting Subcategory |
| § 421.20 - Applicability: description of the primary aluminum smelting subcategory. |
| § 421.21 - Specialized definitions. |
| § 421.22 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. |
| § 421.23 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. |
| § 421.24 - Standards of performance for new sources. |
| § 421.25 - [Reserved] |
| § 421.26 - Pretreatment standards for new sources. |
| § 421.27 - [Reserved] |