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Code of Federal Regulations (Last Updated: November 8, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter N - Effluent Guidelines and Standards |
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Part 425 - Leather Tanning and Finishing Point Source Category |
| Subpart A - Hair Pulp, Chrome Tan, Retan-Wet Finish Subcategory |
| § 425.10 - Applicability; description of the hair pulp, chrome tan, retan-wet finishing subcategory. |
| § 425.11 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.12 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.13 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.14 - New source performance standards (NSPS). |
| § 425.15 - Pretreatment standards for existing sources (PSES). |
| § 425.16 - Pretreatment standards for new sources (PSNS). |
| Subpart B - Hair Save, Chrome Tan, Retan-Wet Finish Subcategory |
| § 425.20 - Applicability; description of the hair save, chrome tan, retan-wet finish subcategory. |
| § 425.21 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.22 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.23 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.24 - New source performance standards (NSPS). |
| § 425.25 - Pretreatment standards for existing sources (PSES). |
| § 425.26 - Pretreatment standards for new sources (PSNS). |
| Subpart C - Hair Save or Pulp, Non-Chrome Tan, Retan-Wet Finish Subcategory |
| § 425.30 - Applicability; description of the hair save or pulp, non-chrome tan, retan-wet finish subcategory. |
| § 425.31 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.32 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.33 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.34 - New source performance standards (NSPS). |
| § 425.35 - Pretreatment standards for existing sources (PSES). |
| § 425.36 - Pretreatment standards for new sources (PSNS). |
| Subpart D - Retan-Wet Finish-Sides Subcategory |
| § 425.40 - Applicability; description of the retan-wet finish-sides subcategory. |
| § 425.41 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.42 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.43 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.44 - New source performance standards (NSPS). |
| § 425.45 - Pretreatment standards for existing sources (PSES). |
| § 425.46 - Pretreatment standards for new sources (PSNS). |
| Subpart E - No Beamhouse Subcategory |
| § 425.50 - Applicability; description of the no beamhouse subcategory. |
| § 425.51 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.52 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.53 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.54 - New source performance standards (NSPS). |
| § 425.55 - Pretreatment standards for existing sources (PSES). |
| § 425.56 - Pretreatment standards for new sources (PSNS). |
| Subpart F - Through-the-Blue Subcategory |
| § 425.60 - Applicability; description of the through-the-blue subcategory. |
| § 425.61 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.62 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.63 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.64 - New source performance standards (NSPS). |
| § 425.65 - Pretreatment standards for existing sources (PSES). |
| § 425.66 - Pretreatment standards for new sources (PSNS). |
| Subpart G - Shearling Subcategory |
| § 425.70 - Applicability; description of the shearling subcategory. |
| § 425.71 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.72 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.73 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.74 - New source performance standards (NSPS). |
| § 425.75 - Pretreatment standards for existing sources (PSES). |
| § 425.76 - Pretreatment standards for new sources (PSNS). |
| Subpart H - Pigskin Subcategory |
| § 425.80 - Applicability; description of the pigskin subcategory. |
| § 425.81 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). |
| § 425.82 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). |
| § 425.83 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.84 - New source performance standards (NSPS). |
| § 425.85 - Pretreatment standards for existing sources (PSES). |
| § 425.86 - Pretreatment standards for new sources (PSNS). |
| 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 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). |
| § 425.94 - New source performance standards (NSPS). |
| § 425.95 - Pretreatment standards for existing sources (PSES). |
| § 425.96 - Pretreatment standards for new sources (PSNS). |
| General Provisions |
| § 425.01 - Applicability. |
| § 425.02 - General definitions. |
| § 425.03 - Sulfide analytical methods and applicability. |
| § 425.04 - Applicability of sulfide pretreatment standards. |
| § 425.05 - Compliance dates. |
| § 425.06 - Monitoring requirements. |
| Appendix A to Part 425 - Potassium Ferricyanide Titration Method |
| Appendix B to Part 425 - Modified Monier-Williams Method |
| Appendix C to Part 425 - Definition and Procedure for the Determination of the Method Detection Limit |