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U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 430Subpart F - Subpart F—Semi-Chemical Subcategory
§ 430.60 - Applicability; description of the semi-chemical subcategory.
§ 430.61 - Specialized definitions.
§ 430.62 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
§ 430.63 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
§ 430.64 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
§ 430.65 - New source performance standards (NSPS).
§ 430.66 - Pretreatment standards for existing sources (PSES).
§ 430.67 - Pretreatment standards for new sources (PSNS).
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