Chapter NR 252 - Leather tanning and finishing

Section NR 252.01 - Purpose
Section NR 252.015 - Applicability
Section NR 252.02 - General definitions
Section NR 252.03 - Sulfide analytical method
Section NR 252.035 - Potassium ferricyanide titration method
Section NR 252.036 - Modified Monier-Williams method
Section NR 252.0365 - Method detection limit method
Section NR 252.04 - Applicability of sulfide pretreatment standards
Section NR 252.05 - Compliance date for pretreatment standards for existing sources (PSES)
Section NR 252.06 - Monitoring requirements
Section NR 252.10 - Applicability; description of the hair pulp, chrome tan, retan-wet finishing subcategory
Section NR 252.11 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.12 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.13 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.14 - New source performance standards (NSPS)
Section NR 252.15 - Pretreatment standards for existing sources (PSES)
Section NR 252.16 - Pretreatment standards for new sources (PSNS)
Section NR 252.20 - Applicability; description of the hair save, chrome tan, retan-wet finish subcategory
Section NR 252.21 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.22 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.23 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.24 - New source performance standards (NSPS)
Section NR 252.25 - Pretreatment standards for existing sources (PSES)
Section NR 252.26 - Pretreatment standards for new sources (PSNS)
Section NR 252.30 - Applicability; description of the hair save or pulp, nonchrome tan, retan-wet finish subcategory
Section NR 252.31 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.32 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.33 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.34 - New source performance standards (NSPS)
Section NR 252.35 - Pretreatment standards for existing sources (PSES)
Section NR 252.36 - Pretreatment standards for new sources (PSNS)
Section NR 252.40 - Applicability; description of the retan-wet finish-sides subcategory
Section NR 252.41 - Effluent limitations representing the degree of effluent reduction attainable by the control technology currently available (BPT)
Section NR 252.42 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.43 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.44 - New source performance standards (NSPS)
Section NR 252.45 - Pretreatment standards for existing sources (PSES)
Section NR 252.46 - Pretreatment standards for new sources (PSNS)
Section NR 252.50 - Applicability; description of the no beamhouse subcategory
Section NR 252.51 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.52 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.53 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.54 - New source performance standards (NSPS)
Section NR 252.55 - Pretreatment standards for existing sources (PSES)
Section NR 252.56 - Pretreatment standards for new sources (PSNS)
Section NR 252.60 - Applicability; description of the through-the-blue subcategory
Section NR 252.61 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.62 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.63 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.64 - New source performance standards (NSPS)
Section NR 252.65 - Pretreatment standards for existing sources (PSES)
Section NR 252.66 - Pretreatment standards for new sources (PSNS)
Section NR 252.70 - Applicability; description of the shearing subcategory
Section NR 252.71 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.72 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.73 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.74 - New source performance standards (NSPS)
Section NR 252.75 - Pretreatment standards for existing sources (PSES)
Section NR 252.76 - Pretreatment standards for new sources (PSNS)
Section NR 252.80 - Applicability; description of the pigskin subcategory
Section NR 252.81 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.82 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.83 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.84 - New source performance standards (NSPS)
Section NR 252.85 - Pretreatment standards for existing sources (PSES)
Section NR 252.86 - Pretreatment standards for new sources (PSNS)
Section NR 252.90 - Applicability; description of the retan-wet finish-splits subcategory
Section NR 252.91 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Section NR 252.92 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)
Section NR 252.93 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
Section NR 252.94 - New source performance standards (NSPS)
Section NR 252.95 - Pretreatment standards for existing sources (PSES)
Section NR 252.96 - Pretreatment standards for new sources (PSNS)
Section NR 252.99 - Cross-references