NR 235.71 HistoryHistory: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.72NR 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 HistoryHistory: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.73NR 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 HistoryHistory: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.74NR 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 HistoryHistory: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.75NR 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 HistoryHistory: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.80NR 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 HistoryHistory: Cr. Register, March, 1997, No. 495, eff. 4-1-97. NR 235.81NR 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: