NR 235.51(1)
(1) Limitations shall be calculated by multiplying the following concentrations by the manufacturing process wastewater flow:
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See PDF for table 
NR 235.51(2)
(2) The pH shall be within the range of 6.0 to 9.0 at all times.
NR 235.51 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.52
NR 235.52 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). NR 235.52(1)(1) For existing point sources whose total OCPSF production defined by
s. NR 235.02 is less than or equal to 5 million pounds of OCPSF products per year, the BAT level of treatment shall be the same as the BPT level of treatment.
NR 235.52(2)
(2) Except as provided in
sub. (1) and in
40 CFR 125.30 to
125.32, any existing point source that uses end-of-pipe biological treatment and is subject to this subchapter shall achieve discharges in accordance with
s. NR 235.81.
NR 235.52(3)
(3) Except as provided in
sub. (1) and in
40 CFR 125.30 to
125.32, any existing point source that does not use end-of-pipe biological treatment and is subject to this subchapter shall achieve discharges in accordance with
s. NR 235.91.
NR 235.52 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.53
NR 235.53 New source performance standards (NSPS). NR 235.53(1)(1) Any new source that uses end-of-pipe biological treatment and is subject to this subchapter:
NR 235.53(2)
(2) Any new source that does not use end-of-pipe biological treatment and is subject to this section:
NR 235.53 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.54
NR 235.54 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 235.54 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.55
NR 235.55 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 235.55 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.60 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.61
NR 235.61 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 to
125.32, and in
s. NR 235.02 (9) for point sources with production in 2 or more subcategories, any existing point source subject to this section shall achieve the following limitations:
NR 235.61(1)
(1) Limitations shall be calculated by multiplying the following concentrations by the manufacturing process wastewater flow:
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See PDF for table NR 235.61(2)
(2) The pH level shall be within the range of 6.0 to 9.0 at all times.
NR 235.61 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.62
NR 235.62 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). NR 235.62(1)(1) For existing point sources whose total OCPSF production defined by
s. NR 235.02 is less than or equal to 5 million pounds of OCPSF products per year, the BAT level of treatment shall be the same as the BPT level of treatment.
NR 235.62(2)
(2) Except as provided in
sub. (1) and in
40 CFR 125.30 to
125.32, any existing point source that uses end-of-pipe biological treatment and is subject to this subchapter shall achieve discharges in accordance with
s. NR 235.81.
NR 235.62(3)
(3) Except as provided in
sub. (1) and in
40 CFR 125.30 to
125.32, any existing point source that does not use end-of-pipe biological treatment and is subject to this subchapter shall achieve discharges in accordance with
s. NR 235.91.
NR 235.62 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.63
NR 235.63 New source performance standards (NSPS). NR 235.63(1)(1) Any new source that uses end-of-pipe biological treatment and is subject to this subchapter:
NR 235.63(2)
(2) Any new source that does not use end-of-pipe biological treatment and is subject to this section:
NR 235.63 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.64
NR 235.64 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 235.64 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.65
NR 235.65 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 235.65 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.70
NR 235.70 Applicability; description of the specialty organic chemicals subcategory. This subchapter applies to the process wastewater discharges resulting from the manufacture of all SIC 2865 and 2869 organic chemicals and organic chemical groups which are not defined as commodity chemicals in
s. NR 235.50 or bulk organic chemicals in
s. NR 235.60.
NR 235.70 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.71
NR 235.71 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 to
125.32, and in
s. NR 235.02 (9) for point sources with production in 2 or more subcategories, any existing point source subject to this section shall achieve the following limitations:
NR 235.71(1)
(1) Limitations shall be calculated by multiplying the following concentrations by the manufacturing process wastewater flow:
-
See PDF for table NR 235.71(2)
(2) The pH shall be within the range of 6.0 to 9.0 at all times.
NR 235.71 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.72
NR 235.72 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). NR 235.72(1)(1) For existing point sources whose total OCPSF production defined by
s. NR 235.02 is less than or equal to 5 million pounds of OCPSF products per year, the BAT level of treatment shall be the same as the BPT level of treatment.
NR 235.72(2)
(2) Except as provided in
sub. (1) and in
40 CFR 125.30 to
125.32, any existing point source that uses end-of-pipe biological treatment and is subject to this subchapter shall achieve discharges in accordance with
s. NR 235.81.
NR 235.72(3)
(3) Except as provided in
sub. (1) and in
40 CFR 125.30 to
125.32, any existing point source that does not use end-of-pipe biological treatment and is subject to this subchapter shall achieve discharges in accordance with
s. NR 235.91.
NR 235.72 History
History: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.73
NR 235.73 New source performance standards (NSPS). NR 235.73(1)(1) Any new source that uses end-of-pipe biological treatment and is subject to this subchapter:
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 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. 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)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.
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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 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
