NR 211.03(19m)(b)(b) Any industrial user which discharges an average of 25,000 gallons per day or more of wastewater to the POTW, excluding sanitary, noncontact cooling and boiler blowdown wastewater; NR 211.03(19m)(c)(c) Any industrial user that discharges to the POTW a process waste stream which makes up 5% or more of the average dry weather hydraulic or organic capacity of the POTW treatment plant; or NR 211.03(19m)(e)(e) Any other industrial user designated as a significant industrial user by the control authority. NR 211.03(20)(20) “Sludge requirements” means the following statutory provisions and regulations or permits issued pursuant to them: section 405 of the federal clean water act; 33 USC 1251 et seq.; the solid waste disposal act (SWDA), 42 USC 6901 et seq.; the federal clean air act, 42 USC 1857 et seq.; the toxic substances control act, 15 USC 2601 et seq.; the marine protection, research and sanctuaries act, 33 USC 1401 et seq.; and ch. 281, Stats. NR 211.03(20m)(20m) “Slug” means any nonroutine, episodic discharge, such as a discharge resulting from a spill or a noncustomary batch discharge. NR 211.03(21)(21) “Unregulated stream” means a stream not regulated by a categorical pretreatment standard. NR 211.03(22)(22) “WPDES permit” means a permit issued to a POTW under s. 283.31, Stats., for the purposes of controlling pollutant discharge. NR 211.03 HistoryHistory: Cr. Register, July, 1983, No. 331, eff. 8-1-83; r. (6), renum. (1) to (5) and (7) to (15) to be (2), (4), (6) to (8) and (10) to (17) and (22), cr. (1), (3), (5), (9) and (18) to (21), Register, September, 1986, No. 369, eff. 10-1-86; cr. (1m), (2e), (2s), (9m), (19m) and (20m), am. (8) and (10), r. and recr. (9), Register, March, 1992, No. 435, eff. 4-1-92; CR 13-006: cr. (1e), (4m), am. (8), cr. (8m), am. (16), (19m) (a), (c), r. (19m) (d) Register January 2014 No. 697, eff. 2-1-14; correction in (16) made under s. 13.92 (4) (b) 7., Stats., Register January 2014 No. 697. NR 211.10NR 211.10 Prohibited discharge standards. NR 211.10(1)(1) Industrial users may not discharge pollutants into a POTW which pass through or interfere with the operation or performance of the POTW, and thereby cause or significantly contribute to a violation of the POTW’s WPDES permit. NR 211.10(2)(2) The following pollutants may not be introduced into a POTW: NR 211.10(2)(a)(a) Pollutants that create or contribute to a fire or explosion hazard in the POTW, including waste streams with a closed cup flashpoint of less than 140° F or 60° C using the test methods in s. NR 661.0021. NR 211.10(2)(b)(b) Pollutants which will cause or contribute to corrosive structural damage to the POTW but in no case discharges with a pH lower than 5.0, unless the POTW is specifically designed to accommodate such discharges. NR 211.10(2)(c)(c) Solid or viscous pollutants in amounts which will cause or contribute to obstruction to the flow in sewers or other interference with the operation of the POTW. NR 211.10(2)(d)(d) Any pollutant, including oxygen demanding pollutants, released in a discharge of such volume or strength as to cause or contribute to interference in the POTW. NR 211.10(2)(e)(e) Heat in amounts which will inhibit or contribute to the inhibition of biological activity in the POTW treatment plant resulting in interference or causing damage to the POTW but in no case heat in such quantities that the temperature exceeds 40°C (104°F) at the influent to the POTW treatment plant unless the department, at the request of the POTW, has approved alternate temperature limits. NR 211.10(2)(f)(f) Petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass through. NR 211.10(2)(g)(g) Pollutants which result in the presence of gases, vapors or fumes within the POTW in a quantity which may cause acute worker health or safety problems. NR 211.10(2)(h)(h) Any trucked or hauled pollutants, except at discharge points designated by the POTW. NR 211.10(3)(a)(a) POTWs developing pretreatment programs under subchapter II shall develop specific prohibited discharge standards to enforce the general prohibitions of subs. (1) and (2). All other POTWs shall, where the contributions of industrial users result in pass-through or interference and the resulting permit violation is likely to recur, develop and enforce specific prohibited discharge standards which, together with appropriate POTW facility or operation changes, are necessary to ensure continued compliance with the POTW’s WPDES permit. NR 211.10(3)(b)(b) This subsection is not intended to require pretreatment as a substitute for adequate municipal treatment. NR 211.10(3)(c)(c) Specific prohibited discharge standards may not be developed and enforced by the POTW without giving prior notice to persons or groups who have requested notice and an opportunity to respond. NR 211.10(3)(d)(d) Where specific prohibited discharge standards or limits on pollutants or pollutant parameters are developed by a POTW under this subsection, they shall be deemed pretreatment standards for the purposes of s. 283.21 (2), Stats. NR 211.10(3)(e)(e) POTWs may develop best management practices to implement the prohibitions of subs. (1) and (2). Such BMPs shall be considered specific prohibited discharge standards under this subsection and pretreatment standards for the purposes of s. 283.21 (2), Stats. NR 211.10(4)(4) Except where expressly authorized to do so by an applicable pretreatment standard or requirement, no industrial user may increase the use of process water or in any other way attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with a pretreatment standard or requirement. The control authority may impose mass limitations on an industrial user to account for dilution or in any other situation for which the control authority finds mass limitations appropriate.