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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 420
Subpart D - Subpart D—Steelmaking Subcategory
§ 420.40 - Applicability; description of the steelmaking subcategory.
§ 420.41 - Specialized definitions.
§ 420.42 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
§ 420.43 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
§ 420.44 - New source performance standards (NSPS).
§ 420.45 - Pretreatment standards for existing sources (PSES).
§ 420.46 - Pretreatment standards for new sources (PSNS).
§ 420.47 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
§ 420.48 - Pretreatment standards compliance dates.
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