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)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.
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See PDF for table 
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 µg/l maximum for any one day and 3,325 µg/l maximum for monthly average.
NR 235.91 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. 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)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.
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See PDF for table
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 µg/l maximum for any one day and 3,325 µg/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 NR 235.99 Note
Note: The Wisconsin administrative code corresponds to the code of federal regulations according to the following table:
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See PDF for table
