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NR 235.73(1)(a) (a) Shall achieve discharges in accordance with s. NR 235.81.
NR 235.73(1)(b) (b) May not exceed the BPT effluent limitations listed in the table in s. NR 235.71 (1); and
NR 235.73(1)(c) (c) Shall maintain the pH within 6.0 to 9.0 at all times.
NR 235.73(2) (2) Any new source that does not use end-of-pipe biological treatment and is subject to this section:
NR 235.73(2)(a) (a) Shall achieve discharges in accordance with s. NR 235.91.
NR 235.73(2)(b) (b) May not exceed BPT effluent limitations listed in the table in s. NR 235.71 (1); and
NR 235.73(2)(c) (c) Shall maintain the pH within 6.0 to 9.0 at all times.
NR 235.73 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
NR 235.74 NR 235.74  Pretreatment standards for existing sources (PSES). Except as provided in ss. NR 211.13 and 211.14, any existing source subject to this subchapter which introduces pollutants into a POTW shall comply with ch. NR 211 and achieve discharges in accordance with s. NR 235.99.
NR 235.74 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
NR 235.75 NR 235.75  Pretreatment standards for new sources (PSNS). Except as provided in s. NR 211.13 any new source subject to this subchapter which introduces pollutants into a POTW shall comply with ch. NR 211 and achieve discharges in accordance with s. NR 235.99.
NR 235.75 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
subch. IX of ch. NR 235 Subchapter IX - Direct Discharge Point Sources That Use End-Of-Pipe Biological Treatment
NR 235.80 NR 235.80  Applicability; description of the subcategory of direct discharge point sources that use end-of-pipe biological treatment. This subchapter applies to the process wastewater discharges resulting from the manufacture of the OCPSF products and products groups defined by s. NR 235.02 from any point source that uses end-of-pipe biological treatment or installs end-of-pipe biological treatment to comply with BPT effluent limitations.
NR 235.80 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
NR 235.81 NR 235.81  Toxic pollutant effluent limitations and standards for direct discharge point sources that use end-of-pipe biological treatment.
NR 235.81(1) (1) Any point source subject to this subchapter must achieve discharges not exceeding the quantity determined by multiplying the process wastewater flow times the concentrations in the following table.
NR 235.81(2) (2) For chromium, copper, lead, nickel, zinc and total cyanide:
NR 235.81(2)(a) (a) The discharge quantity shall be determined by multiplying the concentrations listed in the following table for these pollutants times the flow from the metal-bearing waste streams for the metals and times the flow from the cyanide bearing waste streams for total cyanide.
NR 235.81(2)(b) (b) The metal-bearing waste streams and cyanide-bearing waste streams are defined as:
NR 235.81(2)(b)1. 1. Those waste streams listed in Appendix A.
NR 235.81(2)(b)2. 2. Any additional OCPSF process wastewater streams identified by the permitting authority on a case-by-case basis as metal or cyanide bearing based upon a determination that such streams contain significant amounts of the pollutants identified above.
NR 235.81(2)(c) (c) Any streams designated under par. (b) 2. shall be treated independently of other metal or cyanide bearing waste streams unless the permitting authority determines that the combination of such streams, prior to treatment, with the Appendix A waste streams will result in substantial reduction of these pollutants. This determination shall be based upon a review of relevant engineering, production and sampling information. - See PDF for table PDF
1All units are micrograms per liter.
2Total zinc for rayon fiber manufacture that uses the viscose process and acrylic fiber manufacture that uses the zinc chloride/solvent process is 6,796 mg/l maximum for any one day and 3,325 mg/l maximum for monthly average.
NR 235.81 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
subch. X of ch. NR 235 Subchapter X - Direct Discharge Point Sources That Do Not Use End-of-Pipe Biological Treatment
NR 235.90 NR 235.90  Applicability; description of the subcategory of direct discharge point sources that do not use end-of-pipe biological treatment. This subchapter applies to the process wastewater discharges resulting from the manufacture of the OCPSF products and product groups defined by s. NR 235.02 from any point source that does not use end-of-pipe biological treatment and does not install end-of-pipe biological treatment to comply with BPT effluent limitations.
NR 235.90 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
NR 235.91 NR 235.91  Toxic pollutant effluent limitations and standards for direct discharge point sources that do not use end-of-pipe biological treatment.
NR 235.91(1) (1) Any point source subject to this subchapter must achieve discharges not exceeding the quantity determined by multiplying the process wastewater flow times the concentrations in the following table.
NR 235.91(2) (2) For chromium, copper, lead, nickel, zinc and total cyanide:
NR 235.91(2)(a) (a) The discharge quantity shall be determined by multiplying the concentrations listed in the following table for these pollutants times the flow from the metal-bearing waste streams for the metals and times the flow from the cyanide bearing waste streams for total cyanide.
NR 235.91(2)(b) (b) The metal-bearing waste streams and cyanide-bearing waste streams are defined as:
NR 235.91(2)(b)1. 1. Those waste streams listed in Appendix A.
NR 235.91(2)(b)2. 2. Any additional OCPSF process wastewater streams identified by the permitting authority on a case-by-case basis as metal or cyanide bearing based upon a determination that such streams contain significant amounts of the pollutants identified above.
NR 235.91(2)(c) (c) Any streams designated under par. (b) 2. shall be treated independently of other metal or cyanide bearing waste streams unless the permitting authority determines that the combination of such streams, prior to treatment, with the Appendix A waste streams will result in substantial reduction of these pollutants. This determination shall be based upon a review of relevant engineering, production and sampling information. - See PDF for table PDF
1All units are micrograms per liter.
2Total Zinc for rayon fiber manufacture that uses the viscose process and acrylic fibers manufacture that uses the zinc chloride/solvent process is 6,796 mg/l maximum for any one day and 3,325 mg/l maximum for monthly average.
NR 235.91 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
subch. XI of ch. NR 235 Subchapter XI - Indirect Discharge Point Sources
NR 235.98 NR 235.98  Applicability; description of the subcategory of indirect discharge point sources. This subchapter applies to the process wastewater discharges resulting from the manufacture of the OCPSF products and products groups defined by s. NR 235.02 from any indirect discharge point source.
NR 235.98 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
NR 235.99 NR 235.99  Toxic pollutant standards for indirect discharge point sources.
NR 235.99(1) (1) Any point source subject to this subchapter must achieve discharges not exceeding the quantity determined by multiplying the process wastewater flow times the concentrations in the following table.
NR 235.99(2) (2) For chromium, copper, lead, nickel, zinc and total cyanide:
NR 235.99(2)(a) (a) The discharge quantity shall be determined by multiplying the concentrations listed in the following table for these pollutants times the flow from the metal-bearing waste streams for the metals and times the flow from the cyanide bearing waste streams for total cyanide.
NR 235.99(2)(b) (b) The metal-bearing waste streams and cyanide-bearing waste streams are defined as:
NR 235.99(2)(b)1. 1. Those waste streams listed in Appendix A.
NR 235.99(2)(b)2. 2. Any additional OCPSF process wastewater streams identified by the permitting authority on a case-by-case basis as metal or cyanide bearing based upon a determination that such streams contain significant amounts of the pollutants identified above.
NR 235.99(2)(c) (c) Any streams designated under par. (b) 2. shall be treated independently of other metal or cyanide bearing waste streams unless the permitting authority determines that the combination of such streams, prior to treatment, with the Appendix A waste streams will result in substantial reduction of these pollutants. This determination shall be based upon a review of relevant engineering, production, and sampling information. - See PDF for table PDF
1All units are micrograms per liter.
2Total zinc for rayon fiber manufacture that uses the viscose process and acrylic fiber manufacture that uses the zinc chloride/solvent process is 6,796 mg/l maximum for any one day and 3,325 mg/l maximum monthly average.
NR 235.99 History History: Cr. Register, March, 1997, No. 495, eff. 4-1-97.
APPENDIX A TO CHAPTER NR 235 - NONCOMPLEXED METAL-BEARING WASTE STREAMS AND CYANIDE-BEARING WASTE STREAMS - See PDF for table PDF
Copper Bearing Waste Streams - See PDF for table PDF - See PDF for table PDF - See PDF for table PDF
Nickel Bearing Waste Streams - See PDF for table PDF
Zinc Bearing Waste Streams - See PDF for table PDF
NR 235.99 Note Note: The Wisconsin administrative code corresponds to the code of federal regulations according to the following table: - See PDF for table PDF
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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.