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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 419
Subpart B - Subpart B—Cracking Subcategory
§ 419.20 - Applicability; description of the cracking subcategory.
§ 419.21 - Specialized definitions.
§ 419.22 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
§ 419.23 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
§ 419.24 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
§ 419.25 - Pretreatment standards for existing sources (PSES).
§ 419.26 - Standards of performance for new sources (NSPS).
§ 419.27 - Pretreatment standards for new sources (PSNS).
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