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NR 258.04(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 258.04(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 258.04(3) (3) Pretreatment standards for discharges to publicly owned treatment works;
NR 258.04(4) (4) Standards of performance for new sources.
NR 258.04 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76; r. and recr. Register, August, 1983, No. 332, eff. 9-1-83.
NR 258.06 NR 258.06  Application of effluent limitations and standards.
NR 258.06(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 258.06(1)(a) (a) They may be modified in accordance with subch. IV of ch. NR 220,
NR 258.06(1)(b) (b) They may be superseded by more stringent limitations and standards necessary to achieve water quality standards or meet other legal requirements, or
NR 258.06(1)(c) (c) They may be supplemented or superseded by standards or prohibitions for toxic pollutants or by additional limitations for other pollutants required to achieve water quality.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 258.06(2) (2) The production basis for application of the limitations and standards set forth in this chapter shall be the daily average of annual production in each subcategory subject to the provisions of this chapter.
NR 258.06(3) (3) The effluent limitations of ss. NR 258.10, 258.11, and 258.12 shall be applied to discharges from any single facility subject to the provisions of this chapter by:
NR 258.06(3)(a) (a) Determining to which of subcategories (1) to (10) such facility belongs,
NR 258.06(3)(b) (b) Calculating the discharge limitations from the appropriate effluent limitations for such category on the basis of the production or the LWK of animals slaughtered in said facility, and
NR 258.06(3)(c) (c) For subcategories (1) through (4) increasing such discharge limitations by the amounts calculated using appropriate effluent limitations for rendering and hide or blood processing operations on the basis of the ELWK of raw materials so processed resulting from animals slaughtered elsewhere than in said facility.
NR 258.06 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76; correction in (1) (a) made under s. 13.92 (4) (b) 7, Stats., Register April 2018 No. 748.
NR 258.10 NR 258.10  Effluent limitations, best practicable treatment. The following effluent limitations when applied in accordance with s. NR 258.06 establish 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 258.10(1) (1) All discharges shall be within the pH range of 6.0 to 9.0.
NR 258.10(2) (2) The fecal coliform of all discharges except those from the small processor subcategory shall not exceed an MPN of 400/100ml.
NR 258.10(3) (3) The BOD5, suspended solids, and oil and grease 30 day average limitations are set forth in table 1. The daily maximum limitations are 2 times the 30 day average values. The limitations of table 1 may be modified for the renderer subcategory in accordance with sub. (4).
NR 258.10(4) (4) For a renderer who conducts hide curing the effluent limitations for the renderer subcategory in table 1 shall be increased by adding;
NR 258.10(4)(a) (a) To the limitation for BOD5 the value resulting from dividing the number of hides cured by their weight in pounds and multiplying by 17.6, or by their weight in kilograms and multiplying by 8.0, and
NR 258.10(4)(b) (b) To the limitations for suspended solids the value resulting from dividing the number of hides cured by their weight in pounds and multiplying by 24.2, or by their weight in kilograms and multiplying by 11.0.
Table 1 - See PDF for table PDF
NR 258.10 Note Note: (1) Limitation is calculated using the formula 0.21X0.23(V-0.4) where V is the lb processed meat products/lb LWK.
NR 258.10 Note (2) Limitation is calculated using the formula 0.28X0.30(V-0.4) where V is the same as note (1).
NR 258.10 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76.
NR 258.11 NR 258.11  Effluent limitations, best available treatment. The following effluent limitations when applied in accordance with s. NR 258.06 establish 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 available technology economically achievable.
NR 258.11(1) (1) The pH of all discharges shall be within the range of 6.0 to 9.0.
NR 258.11(2) (2) The fecal coliform of all discharges except those from the small processor subcategory shall not exceed an MPN of 400/100 ml.
NR 258.11(3) (3) The oil and grease content of discharges for the first 4 subcategories of table 2 shall not exceed 10 mg/l.
NR 258.11(4) (4) The ammonia content of all discharges except for the small processor and renderer subcategories shall not exceed 4 mg/l on a 30-day average basis nor a daily maximum of 8 mg/l. The effluent limitation for ammonia for discharges from the renderer subcategory shall be a 30 day average of 0.02 and a daily maximum of 0.04 lbs/1000 lbs. or kg/1000 kg. of raw material.
NR 258.11(5) (5) The BOD5, suspended solids, and oil and grease 30 day average limitations are set forth in table 2. The daily maximum limitations are 2 times the 30 day average values. The limitations of table 2 may be modified for the renderer subcategory in accordance with sub. (6).
NR 258.11(6) (6) For a renderer who conducts hide curing the effluent limitations for the renderer subcategory in table 2 shall be increased by adding;
NR 258.11(6)(a) (a) To the limitation for BOD5 the value resulting from dividing the number of hides cured by their weight in pounds and multiplying by 7.9, or by their weight in kilograms and multiplying by 3.6 and
NR 258.11(6)(b) (b) To the limitations for suspended solids the value resulting from dividing the number of hides cured by their weight in pounds and multiplying by 13.6, or by their weight in kilograms and multiplying by 6.2.
Table 2 - See PDF for table PDF
NR 258.11 Note Note: (1) The limitation is calculated using the formula 0.07X0.08(V-0.4) where V is the lb processed meat products/lb LWK. (2) The limitation is calculated using the formula 0.09X0.10(V-0.4) where V is the same as note (1).
NR 258.11 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76.
NR 258.12 NR 258.12  Standards of performance. The following effluent limitations when applied in accordance with s. NR 258.06 establish the quantity or quality of pollutants or pollutant properties which may be discharged by a new source subject to the provisions of this chapter.
NR 258.12(1) (1) The pH of all discharges shall be within the range of 6.0 to 9.0.
NR 258.12(2) (2) The fecal coliform of all discharges except those from the small processor subcategory shall not exceed an MPN of 400/100 ml.
NR 258.12(3) (3) The BOD5, suspended solids, oil and grease, and ammonia 30 day average limitations are set forth in table 3. The daily maximum limitations are 2 times the 30 day average values.
NR 258.12(4) (4) For a renderer who conducts hide curing the effluent limitations for the renderer subcategory in table 3 shall be increased by adding;
NR 258.12(4)(a) (a) To the limitation for BOD5 the value resulting from dividing the number of hides cured by their weight in pounds and multiplying by 7.9, or by their weight in kilograms and multiplying by 3.6, and
NR 258.12(4)(b) (b) To the limitations for suspended solids the value resulting from dividing the number of hides cured by their weight in pounds and multiplying by 13.6, or by their weight in kilograms and multiplying by 6.2.
Table 3 - See PDF for table PDF
NR 258.12 Note Note: (1) Limitation is calculated using the formula 0.21)0.23 (V-0.4) where V is the lb processed meat products/lb LWK.
NR 258.12 Note Limitation is calculated using the formula 0.28 ) 0.30 (V-0.4) where V is the same as note (1).
NR 258.12 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76.
NR 258.13 NR 258.13  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 258.13 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76; r. and recr. Register, August, 1983, No. 332, eff. 9-1-83
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.