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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Jul 17, 2025
All Titles
Title 40
Chapter I
Part 451
Subpart B - Subpart B—Net Pen Subcategory
§ 451.20 - Applicability.
§ 451.21 - Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).
§ 451.22 - Effluent limitations attainable by the application of the best available technology economically achievable (BAT).
§ 451.23 - Effluent limitations attainable by the application of the best conventional technology (BCT).
§ 451.24 - New source performance standards (NSPS).
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