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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 W - Primary Precious Metals and Mercury Subcategory |
| § 421.250 - Applicability: Description of the primary precious metals and mercury subcategory. |
| § 421.251 - Specialized definitions. |
| § 421.252 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. |
| § 421.253 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. |
| § 421.254 - Standards of performance for new sources. |
| § 421.255 - [Reserved] |
| § 421.256 - Pretreatment standards for new sources. |
| § 421.257 - [Reserved] |