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History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.54 New source performance standards (NSPS). Any new source subject to this subcategory shall achieve the following new source performance standards (NSPS):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.55 Pretreatment standards for existing sources (PSES). Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the following pretreatment standards:
- See PDF for table PDF
1Within the range 6.0 to 10.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.56 Pretreatment standards for new sources (PSNS). Except as provided in 40 CFR 403.7, any new source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the pretreatment standards contained in s. NR 252.55.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.60 Applicability; description of the through-the-blue subcategory. The provisions of this subcategory are applicable to process wastewater discharges resulting from any tannery which processes raw or cured cattle or cattle-like hides through-the-blue tanned state by hair pulp unhairing and chrome tanning; no retan-wet finishing is performed.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.61 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86; am. Table, Register, May, 2001, No. 545, eff. 6-1-01.
NR 252.62 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). The effluent limitations are those for BOD5, TSS, oil and grease, and pH contained in s. NR 252.61.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.63 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). The effluent limitations are those for total chromium contained in s. NR 252.61.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.64 New source performance standards (NSPS). Any new source subject to this subcategory shall achieve the following new source performance standards (NSPS):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86; am. Table, Register, May, 2001, No. 545, eff. 6-1-01.
NR 252.65 Pretreatment standards for existing sources (PSES). Except as provided in s. NR 252.04 and 40 CFR 403.7 and 403.13, any existing source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the following pretreatment standards:
- See PDF for table PDF
1Not less than 7.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86; am. Table, Register, May, 2001, No. 545, eff. 6-1-01.
NR 252.66 Pretreatment standards for new sources (PSNS). Except as provided in 40 CFR 403.7 and s. NR 252.04, any new source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the pretreatment standards contained in s. NR 252.65.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.70 Applicability; description of the shearing subcategory. The provisions of this subcategory are applicable to process wastewater discharges resulting from any tannery which processes raw or cured sheep or sheep-like skins with the wool or hair retained into finished leather by chrome tanning, and retan-wet finishing.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.71 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86; am. Table, Register, May, 2001, No. 545, eff. 6-1-01.
NR 252.72 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). The effluent limitations are those for BOD5, TSS, oil and grease, and pH contained in s. NR 252.71.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.73 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). The effluent limitations are those for total chromium contained in s. NR 252.71.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.74 New source performance standards (NSPS). Any new source subject to this subcategory shall achieve the following new source performance standards (NSPS):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.75 Pretreatment standards for existing sources (PSES). Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the following pretreatment standards:
- See PDF for table PDF
1Within the range 6.0 to 10.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.76 Pretreatment standards for new sources (PSNS). Except as provided in 40 CFR 403.7, any new source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the pretreatment standards contained in s. NR 252.75.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.80 Applicability; description of the pigskin subcategory. The provisions of this subcategory are applicable to process wastewater discharges resulting from any tannery which processes raw or cured pigskins into finished leather by chemically dissolving or pulping the hair and tanning with chrome, then retan-wet finishing.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.81 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.82 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). The effluent limitations are those for BOD5, TSS, oil and grease, and pH contained in s. NR 252.81.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.83 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). The effluent limitations are those for total chromium contained in s. NR 252.81.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.84 New source performance standards (NSPS). Any new source subject to this subcategory shall achieve the following new source performance standards (NSPS):
- See PDF for table PDF
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.85 Pretreatment standards for existing sources (PSES). Except as provided in s. NR 252.04 and 40 CFR 403.7 and 403.13, any existing source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the following pretreatment standards:
- See PDF for table PDF
1Not less than 7.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86; am. Table, Register, May, 2001, No. 545, eff. 6-1-01.
NR 252.86 Pretreatment standards for new sources (PSNS). Except as provided in 40 CFR 403.7 and s. NR 252.04, any new source subject to this subcategory that introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the pretreatment standards contained in s. NR 252.85.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.90 Applicability; description of the retan-wet finish-splits subcategory. The provisions of this subcategory are applicable to process wastewater discharges resulting from any tannery which processes previously unhaired and tanned splits into finished leather by retan-wet finishing.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.91 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86; am. Table, Register, May, 2001, No. 545, eff. 6-1-01.
NR 252.92 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). The effluent limitations are those for BOD5, TSS, oil and grease, and pH contained in s. NR 252.91.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.93 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). Except as provided in 40 CFR 125.30-125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). The effluent limitations are those for total chromium contained in s. NR 252.91.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.94 New source performance standards (NSPS). Any new source subject to this subcategory shall achieve the following new source performance standards (NSPS):
- See PDF for table PDF
1Within the range 6.0 to 9.0.
History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.
NR 252.95 Pretreatment standards for existing sources (PSES).
(1) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subcategory that introduces process wastewater pollutants into publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the following pretreatment standards:
- See PDF for table PDF
1Within the range 6.0 to 10.0.
(2) Any existing source subject to this subcategory which processes less than 3,600 splits/day shall comply with sub. (1), except that the total chromium limitations contained in sub. (1) do not apply. 
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.