Chapter NR 268

NR 268.03(6) (6) “Acid or ferruginous mine drainage” means mine drainage which before any treatment has either a pH less than 6.0 or a total iron concentration of more than 10 mg/l.

NR 268.03(7) (7) “Alkaline mine drainage” means mine drainage which before any treatment has a pH of more than 6.0 and a total iron concentration of less than 10 mg/l.

NR 268.03(8) (8) “Mine drainage” means any water drained, pumped or siphoned from a coal mine.

NR 268.03(9) (9) “Final contour” means the surface shape or contour of a surface mine or section thereof after all mining and earth moving operations have been completed.

NR 268.03(10) (10) “Process waste” means, as appropriate:

NR 268.03(10)(a) (a) Discharges from a coal preparation plant, or

NR 268.03(10)(b) (b) Discharges which are pumped, siphoned, or drained from a coal preparation plant ancillary area.

NR 268.03 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77.

NR 268.04 NR 268.04 Compliance with effluent limitations and standards. Discharge of pollutants from facilities subject to the provisions of this chapter may not exceed, as appropriate:

NR 268.04(1) (1) By July 1, 1977 effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available;

NR 268.04(2) (2) By July 1, 1983 effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable;

NR 268.04(3) (3) Pretreatment standards for discharges to publicly owned treatment works;

NR 268.04(4) (4) Standards of performance for new sources.

NR 268.04 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77; r. and recr. Register, August, 1983, No. 332, eff. 9-1-83.

NR 268.06 NR 268.06 Application of effluent limitations and standards.

NR 268.06(1) (1) The effluent limitations and standards set forth in this chapter shall be used in accordance with this section to establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this chapter, except as provided in subs. (2) and (3) and as;

NR 268.06(1)(a) (a) They may be modified in accordance with subch. IV of ch. NR 220,

NR 268.06(1)(b) (b) They may be superseded by more stringent limitations and standards necessary to achieve water quality standards or meet other legal requirements, or

NR 268.06(1)(c) (c) They may be supplemented or superseded by standards or prohibitions for toxic pollutants or by additional limitations for other pollutants required to achieve water quality.

NR 268.06(2) (2) The effluent limitations and standards of performance of this chapter shall not apply to any overflow discharged from a facility designed, constructed, and operated to:

NR 268.06(2)(a) (a) Contain process waste generated by a coal preparation plant and the runoff to the containment facility resulting from a 10-year 24-hour precipitation event,

NR 268.06(2)(b) (b) Treat process waste from coal preparation plant ancillary areas and the runoff to the treatment facility resulting from a 10-year 24-hour precipitation event, or

NR 268.06(2)(c) (c) Treat mine drainage and the runoff to the treatment facility resulting from a 10-year 24-hour precipitation event.

NR 268.06(3) (3) In the event that coal preparation plant process waste is combined for treatment or discharge with waste from other subcategories subject to the provisions of this chapter, the quantity of pollutants in the combined discharge shall not exceed the quantity specified for such other subcategories.

NR 268.06 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77; correction in (1) (a) made under s. 13.92 (4) (b) 7, Stats., Register April 2018 No. 748.

NR 268.10 NR 268.10 Effluent limitation, best practicable treatment. The following effluent limitations for all or specific subcategories establish, except as provided in subch. IV of ch. NR 220, the quantity or quality of pollutants or pollutant properties which may be discharged by a facility subject to the provisions of this chapter after application to process wastes of the best practicable control technology currently available.

NR 268.10(1) (1) There shall be no discharge of pollutants resulting from activities in subcategory (1).

NR 268.10(2) (2) The pH of discharges from subcategories (2), (3) and (4) shall be within the range of 6.0 to 9.0.

NR 268.10(3) (3) The concentration of pollutants in discharges from subcategories (2), (3) and (4) shall not exceed 30 day average and daily maximum values of:

NR 268.10(3)(a) (a) 3.5 and 7.0 respectively for total iron, and

NR 268.10(3)(b) (b) 35 and 70 mg/l respectively for total suspended solids.

NR 268.10(4) (4) The concentration of dissolved iron in discharges from subcategory (3) shall not exceed 30 day average and daily maximum values of 0.30 and 0.60 mg/l respectively.

NR 268.10(5) (5) The concentration of total manganese in discharges from subcategories (2) and (3) shall not exceed 30 day average and daily maximum values of 2.0 and 4.0 mg/l respectively.

NR 268.10 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77; correction in (intro.) made under s. 13.92 (4) (b) 7, Stats., Register April 2018 No. 748.

NR 268.13 NR 268.13 Pretreatment standards. The pretreatment standards for discharges to publicly owned treatment works from sources subject to the provisions of this chapter shall be as set forth in ch. NR 211.

NR 268.13 History History: Cr. Register, August, 1983, No. 332, eff. 9-1-83.