Chapter NR 252

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).

NR 252.14   New source performance standards (NSPS).

NR 252.15   Pretreatment standards for existing sources (PSES).

NR 252.16   Pretreatment standards for new sources (PSNS).

NR 252.20   Applicability; description of the hair save, chrome tan, retan-wet finish subcategory.

NR 252.21   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

NR 252.22   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.23   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.24   New source performance standards (NSPS).

NR 252.25   Pretreatment standards for existing sources (PSES).

NR 252.26   Pretreatment standards for new sources (PSNS).

NR 252.30   Applicability; description of the hair save or pulp, nonchrome tan, retan-wet finish subcategory.

NR 252.31   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

NR 252.32   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.33   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.34   New source performance standards (NSPS).

NR 252.35   Pretreatment standards for existing sources (PSES).

NR 252.36   Pretreatment standards for new sources (PSNS).

NR 252.40   Applicability; description of the retan-wet finish-sides subcategory.

NR 252.41   Effluent limitations representing the degree of effluent reduction attainable by the control technology currently available (BPT).

NR 252.42   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.43   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.44   New source performance standards (NSPS).

NR 252.45   Pretreatment standards for existing sources (PSES).

NR 252.46   Pretreatment standards for new sources (PSNS).

NR 252.50   Applicability; description of the no beamhouse subcategory.

NR 252.51   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

NR 252.52   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.53   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.54   New source performance standards (NSPS).

NR 252.55   Pretreatment standards for existing sources (PSES).

NR 252.56   Pretreatment standards for new sources (PSNS).

NR 252.60   Applicability; description of the through-the-blue subcategory.

NR 252.61   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

NR 252.62   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.63   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.64   New source performance standards (NSPS).

NR 252.65   Pretreatment standards for existing sources (PSES).

NR 252.66   Pretreatment standards for new sources (PSNS).

NR 252.70   Applicability; description of the shearing subcategory.

NR 252.71   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

NR 252.72   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.73   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.74   New source performance standards (NSPS).

NR 252.75   Pretreatment standards for existing sources (PSES).

NR 252.76   Pretreatment standards for new sources (PSNS).

NR 252.80   Applicability; description of the pigskin subcategory.

NR 252.81   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

NR 252.82   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.83   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.84   New source performance standards (NSPS).

NR 252.85   Pretreatment standards for existing sources (PSES).

NR 252.86   Pretreatment standards for new sources (PSNS).

NR 252.90   Applicability; description of the retan-wet finish-splits subcategory.

NR 252.91   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

NR 252.92   Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

NR 252.93   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

NR 252.94   New source performance standards (NSPS).

NR 252.95   Pretreatment standards for existing sources (PSES).

NR 252.96   Pretreatment standards for new sources (PSNS).

NR 252.99   Cross-references.

NR 252.01 NR 252.01 Purpose. The purpose of this chapter is to establish effluent limitations, standards of performance, and pretreatment standards for discharges of process wastes from the leather tanning and finishing category of point sources and its subcategories.

NR 252.01 History History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.

NR 252.015 NR 252.015 Applicability. This chapter applies to any leather tanning and finishing facility which discharges or may discharge process wastewater pollutants to the waters of the state, or which introduces or may introduce process wastewater pollutants into a publicly owned treatment works.

NR 252.015 History History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.

NR 252.02 NR 252.02 General definitions. In addition to the definitions set forth in 40 CFR Part 401, the following definitions apply to this chapter:

NR 252.02(1) (1) “Chrome tan” means the process of converting hide into leather using a form of chromium.

NR 252.02(2) (2) “Existing source” means any source that is not a new source.

NR 252.02(3) (3) “Hair pulp” means the removal of hair by chemical dissolution.

NR 252.02(4) (4) “Hair save” means the physical or mechanical removal of hair which has not been chemically dissolved, and either selling the hair as a by-product or disposing of it as a solid waste.

NR 252.02(5) (5) “Hide” means any animal pelt or skin as received by a tannery as raw material to be processed.

NR 252.02(6) (6) “Interference” means the discharge of sulfides in quantities which can result in human health hazards and risks to human life, and an inhibition or disruption of a POTW as defined in 40 CFR 403.3 (i).

NR 252.02(7) (7) “Monthly average” means the arithmetic average of 8 individual data points from effluent sampling and analysis during any calendar month.

NR 252.02(8) (8) “New source,” as defined for PSES and PSNS, means any building, structure, facility, or installation from which there is or may be a discharge of pollutants, the construction of which commenced after June 2, 1982.

NR 252.02(9) (9) “New source,” as defined for BPT, BAT, BCT, and NSPS, means any point source the construction of which commenced after January 6, 1983.

NR 252.02(10) (10) “Raw material” means the hides received by the tannery except for facilities covered by the retan-wet finish-sides and retan-wet finish-splits subcategories where “raw material” means the hide or split in the condition in which it is first placed into a wet process.