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Regulations last checked for updates: May 24, 2025

Title 40 - Protection of Environment last revised: Apr 24, 2028
All TitlesTitle 40Chapter IPart 425Subpart I - Subpart I—Retan-Wet Finish-Splits Subcategory
  • § 425.90 - Applicability; description of the retan-wet finish-splits subcategory.
  • § 425.91 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
  • § 425.92 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).
  • § 425.93 -
  • § 425.94 - New source performance standards (NSPS).
  • § 425.95 - Pretreatment standards for existing sources (PSES).
  • § 425.96 - Pretreatment standards for new sources (PSNS).
  • Appendix Appendix A - Appendix A to Part 425—Potassium Ferricyanide Titration Method
  • Appendix Appendix B - Appendix B to Part 425—Modified Monier-Williams Method
  • Appendix Appendix C - Appendix C to Part 425—Definition and Procedure for the Determination of the Method Detection Limit 1
authority: 33 U.S.C. 1311,1314,c,e, 1316 (b) andc, 1317 (b) andc,1318
source: 47 FR 52870, Nov. 23, 1982, unless otherwise noted.
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