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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 424
Subpart B - Subpart B—Covered Electric Furnaces and Other Smelting Operations With Wet Air Pollution Control Devices Subcategory
§ 424.20 - Applicability; description of the covered electric furnaces and other smelting operations with wet air pollution control devices subcategory.
§ 424.21 - Specialized definitions.
§ 424.22 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
§ 424.23 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
§ 424.24 - [Reserved]
§ 424.25 - Standards of performance for new sources.
§ 424.26 - Pretreatment standards for new sources.
§ 424.27 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology.
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