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Code of Federal Regulations (Last Updated: July 5, 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 I - Metallurgical Acid Plants Subcategory |
§ 421.90 - Applicability: Description of the metallurgical acid plants subcategory.
Latest version.
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§ 421.90 Applicability: Description of the metallurgical acid plants subcategory.
The provisions of this subpart apply to process wastewater discharges resulting from or associated with the manufacture of by-product sulfuric acid at primary copper smelters, primary zinc facilities, primary lead facilities, and primary molybdenum facilities, including any associated air pollution control or gas-conditioning systems for sulfur dioxide off-gases from pyrometallurgical operations.
[49 FR 8811, Mar. 8, 1984, as amended at 50 FR 38342, Sept. 20, 1985]