Chapter NR 261

NR 261.13(2) (2) Cyanide. Self-monitoring for cyanide shall be conducted after cyanide treatment but before dilution with other wastestreams. Alternatively, samples may be taken of the final effluent if the facility limitations are adjusted based on the dilution ratio of the cyanide wastestream flow to the effluent flow.

NR 261.13 History History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.

subch. II of ch. NR 261 Subchapter II — Indirect Discharges

NR 261.20 NR 261.20 Applicability. The provisions of this subchapter are applicable to discharges of wastewater from the metal finishing processes as listed in s. NR 261.02 (1) into publicly owned treatment works.

NR 261.20 History History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.

NR 261.21 NR 261.21 Compliance dates. Discharge of pollutants from facilities subject to the provisions of this subchapter may not exceed as appropriate:

NR 261.21(1) (1) By February 15, 1986 for pretreatment standards for existing sources (PSES);

NR 261.21(2) (2) At the commencement of discharge for pretreatment standards for new sources (PSNS).

NR 261.21 History History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.

NR 261.22 NR 261.22 Discharge standards.

NR 261.22(1) (1) Pretreatment standards for existing sources (pses).

NR 261.22(1)(a) (a) Except as provided in par. (b), any existing source subject to this subchapter shall comply with ch. NR 211 and achieve, by February 15, 1986, the following pretreatment standards for existing sources:

Table 4
PSES (mg/l)

NR 261.22 Note 1All metals and cyanide shall be determined in “total” form.

NR 261.22 Note 2Metal finishing facilities which are covered by ch. NR 254 shall comply with the 4.57 mg/l TTO limitation by July 10, 1985.

NR 261.22(1)(b) (b) For facilities with cyanide treatment, and upon approval of the control authority, an amenable cyanide limit (Cyanide, A) of 0.86 milligrams per liter (1 day max.) and 0.32 milligrams per liter (monthly avg.) may apply in place of the total cyanide limit specified in Table 4.

NR 261.22(1)(c) (c) No discharger subject to the provisions of this subchapter may augment the use of process wastewater, or otherwise dilute the wastewater, as a partial or total substitute for adequate treatment to achieve compliance with this standard.

NR 261.22(2) (2) Pretreatment standards for new sources (psns).

NR 261.22(2)(a) (a) Except as provided in par. (b), any new source subject to this subchapter shall comply with ch. NR 211 and achieve, at the commencement of discharge, the following pretreatment standards for new sources:

Table 5
PSNS (mg/l)

NR 261.22 Note 1All metals and cyanide shall be determined in “total” form.

NR 261.22(2)(b) (b) For facilities with cyanide treatment, and upon approval of the control authority, an amenable cyanide limit (Cyanide, A) of 0.86 milligrams per liter (1 day max.) and 0.32 milligrams per liter (monthly avg.) may apply in place of the total cyanide limit specified in Table 5.

NR 261.22(2)(c) (c) No discharger subject to the provisions of this subchapter may augment the use of process wastewater, or otherwise dilute the wastewater, as a partial or total substitute for adequate treatment to achieve compliance with this standard.

NR 261.22 History History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.

NR 261.23 NR 261.23 Monitoring requirements.

NR 261.23(1) (1) Total toxic organics.

NR 261.23(1)(a) (a) In place of monitoring for TTO, the control authority may allow dischargers to make the following certificationstatement:

“Based on my inquiry of the person or persons directly responsible for managing compliance with the pretreatment standard for total toxic organics (TTO), I certify that, to the best of my knowledge and belief, no dumping of concentrated toxic organics into the wastewaters has occurred since filing the last discharge monitoring report. I further certify that this facility is implementing the toxic organic plan submitted to the control authority.”

NR 261.23(1)(b) (b) In requesting the certification alternative, a discharger shall submit a toxic organic management plan. The plan shall specify to the satisfaction of the control authority, the toxic organic compounds used; the method of disposal used instead of dumping, such as reclamation, contract hauling, or incineration; and procedures for ensuring that toxic organics do not routinely spill or leak into the wastewater.

NR 261.23(1)(c) (c) If monitoring is necessary to measure compliance with the TTO standard, the industrial discharger need analyze only for those pollutants reasonably expected to be present.

NR 261.23(1)(d) (d) A new or existing source submitting a certification pursuant to pars. (a) to (c) shall implement the toxic organic management plan approved by the control authority.

NR 261.23(2) (2) Cyanide. Self-monitoring for cyanide shall be conducted after cyanide treatment but before dilution with other wastestreams. Alternatively, samples may be taken of the final effluent if the facility limitations are adjusted based on the dilution ratio of the cyanide wastestream flow to the effluent flow.

NR 261.23 History History: Cr. Register, October, 1986, No. 370, eff. 11-1-86.