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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 417
Subpart N - Subpart N—Neutralization of Sulfuric Acid Esters and Sulfonic Acids Subcategory
§ 417.140 - Applicability; description of the neutralization of sulfuric acid esters and sulfonic acids subcategory.
§ 417.141 - Specialized definitions.
§ 417.142 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
§ 417.143 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
§ 417.144 - Pretreatment standards for existing sources.
§ 417.145 - Standards of performance for new sources.
§ 417.146 - Pretreatment standards for new sources.
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