Chapter NR 252
LEATHER TANNING AND FINISHING
NR 252.015 Applicability. NR 252.02 General definitions. NR 252.03 Sulfide analytical method. NR 252.035 Potassium ferricyanide titration method. NR 252.036 Modified Monier-Williams method. NR 252.0365 Method detection limit method. NR 252.04 Applicability of sulfide pretreatment standards. NR 252.05 Compliance date for pretreatment standards for existing sources (PSES). NR 252.06 Monitoring requirements. NR 252.10 Applicability; description of the hair pulp, chrome tan, retan-wet finishing subcategory. NR 252.11 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). NR 252.12 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). NR 252.13 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).