Chapter NR 269

Chapter NR 269

STONE, GRAVEL AND SAND SEGMENT OF MINERAL MINING AND PROCESSING

NR 269.01   Purpose.

NR 269.02   Applicability.

NR 269.03   Definitions.

NR 269.04   Compliance with effluent limitations and standards.

NR 269.06   Application of effluent limitations and standards.

NR 269.10   Effluent limitations, best practicable treatment.

NR 269.13   Pretreatment standards.

NR 269.01 NR 269.01 Purpose. The purpose of this chapter is to establish effluent limitations, standards of performance, and pretreatment standards for discharges of process wastes from the stone, gravel and sand segment of the mineral mining and processing category of point sources and subcategories thereof.

NR 269.01 Note Note: The authority for promulgation of this chapter is set forth in ch. NR 205.

NR 269.01 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77.

NR 269.02 NR 269.02 Applicability. The effluent limitations, standards of performance, pretreatment standards, and other provisions in this chapter are applicable to pollutants or pollutant properties in discharges of process waste resulting from operations or activities in any of the following product subcategories.

NR 269.02(1) (1) Dimension stone. (Reserved)

NR 269.02(2) (2) Crushed stone.

NR 269.02(3) (3) Construction sand and gravel.

NR 269.02(4) (4) Industrial sand.

NR 269.02 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77.

NR 269.03 NR 269.03 Definitions. The following definitions are applicable to terms used in this chapter. Definitions of other terms and meanings of abbreviations are set forth in ch. NR 205.

NR 269.03(1) (1) “Mine” means an area of land, surface or underground, activity used for or resulting from the extraction of a mineral from natural deposits.

NR 269.03(2) (2) “Mine dewatering discharge” means any water that is pumped, drained or otherwise removed from a mine through direct action of the mining operator and, for subcategories (3) and (4) only, any wet pit overflow caused solely by direct rainfall and groundwater seepage.

NR 269.03(3) (3) “Process generated wastewater” means any wastewater resulting from the slurry transport of ore or intermediate product, air emissions control, or processing exclusive of mining.

NR 269.03 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77.

NR 269.04 NR 269.04 Compliance with effluent limitations and standards. Discharge of pollutants from facilities subject to the provisions of this chapter may not exceed, as appropriate:

NR 269.04(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 269.04(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 269.04(3) (3) Pretreatment standards for discharges to publicly owned treatment works;

NR 269.04(4) (4) Standards of performance for new sources.

NR 269.04 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 269.06 NR 269.06 Application of effluent limitations and standards.

NR 269.06(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;

NR 269.06(1)(a) (a) They may be modified in accordance with subch. IV of ch. NR 220,

NR 269.06(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 269.06(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 269.06(2) (2) The provisions of this chapter with respect to subcategory (2) are applicable to the mining or quarrying and the processing of crushed and broken stone and riprap. This includes all types of rock and stone and specifically the processing of calcite in conjunction with the processing of crushed and broken limestone of dolomite. Rock and stone that is crushed or broken prior to the extraction of another mineral is excluded, however.

NR 269.06(3) (3) The provisions of this chapter with respect to subcategory (3) are applicable to the mining and the processing of sand and gravel for construction or fill uses, exclusive of sand and gravel removed from navigable waters by dredging operations and return flows therefrom.

NR 269.06(4) (4) The provisions of this chapter with respect to subcategory (4) are applicable to the mining and the processing of sand and gravel for uses other than construction and fill including, but not limited to, glass making, molding, abrasives, filtration, refractories and refractory bonding.

NR 269.06(5) (5) In the event that waste streams from various sources within subcategory (3) or within subcategory (4) are combined for treatment and discharge, the quantity and quality of each pollutant or pollutant property in the combined discharge shall not exceed the quantity and quality of each pollutant or pollutant property allowed had each stream been treated separately.

NR 269.06(6) (6) The limitations of this chapter are not applicable to any overflow from facilities designed, constructed and operated to treat to the applicable limitations the precipitation and runoff from a 10-year 24-hour precipitation event as defined in s. NR 205.05.

NR 269.06(7) (7) In the case of a discharge into receiving waters for which the pH, if unaltered by human activities, is or would be less than 6.0 and water quality criteria in water quality standards approved under the act authorize such lower pH, and pH limitation for such discharge may be adjusted downward to the pH water quality criterion for the receiving waters. In no case shall a pH limitation outside the range of 5.0 to 9.0 be permitted.

NR 269.06 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 269.10 NR 269.10 Effluent limitations, best practicable treatment. The following effluent limitations when applied in accordance with s. NR 269.06 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 269.10(1) (1) There shall be no discharge of process generated wastewater pollutants, except that from hydrofluoric acid flotation facilities in subcategory (4) which shall be limited so that:

NR 269.10(1)(a) (a) The pH of the discharge is within the range of 6.0 to 9.0.

NR 269.10(1)(b) (b) The total suspended solids does not exceed a 30-day average or daily maximum of 0.023 or 0.046 lb/1000 lbs, or kg/1000 kg respectively, and

NR 269.10(1)(c) (c) The total fluoride does not exceed a 30-day average or daily maximum of 0.003 or 0.006 lbs/1000 lbs, or kg/1000 kg, respectively.

NR 269.10(2) (2) Mine dewatering discharges shall have a pH within the range of 6.0 to 9.0 and the concentration of total suspended solids shall not exceed 30 mg/l.

NR 269.10 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 269.13 NR 269.13 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 269.13 History History: Cr. Register, August, 1983, No. 332, eff. 9-1-83.