Wis. Admin. Code Department of Natural Resources NR 258.10

Current through November 25, 2024

Section 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.

(1) All discharges shall be within the pH range of 6.0 to 9.0.

(2) The fecal coliform of all discharges except those from the small processor subcategory shall not exceed an MPN of 400/100ml.

(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).

(4) For a renderer who conducts hide curing the effluent limitations for the renderer subcategory in table 1 shall be increased by adding;

(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

(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

BPT Effluent Limitations
Subcategory	BOD5	Suspended Solids	Oil and Grease
(in lbs/1000 lbs. or kg/1000 kg/LWK)
Simple slaughterhouse	0.12	0.20	0.06
Complex slaughterhouse	0.21	0.25	0.08
Low-processing packinghouse	0.17	0.24	0.08
High-processing packinghouse	note (1)	note (2)	0.13
(in lbs/1000 lbs. or kg/1000 kg. of finished product)
Small processor	1.0	1.2	0.5
Meat cutter	0.018	0.022	0.006
Sausage & luncheon meat processor	0.28	0.34	0.10
Ham processor	0.31	0.37	0.11
Canned meat processor	0.37	0.45	0.13
(in lbs/1000 lbs. or kg/1000 kg. of RM)
Renderer	0.17	0.21	0.10
(in lbs/1000 lbs. or kg/1000 kg. ELWK)
Operations
Hide processing	0.02	0.04
Blood processing	0.02	0.04
Rendering, wet or low temperature	0.03	0.06
Rendering, dry	0.01	0.02

Wis. Admin. Code Department of Natural Resources NR 258.10

Cr. Register, June, 1976, No. 246, eff. 7-1-76.

(1) Limitation is calculated using the formula 0.21X0.23(V-0.4) where V is the lb processed meat products/lb LWK.

(2) Limitation is calculated using the formula 0.28X0.30(V-0.4) where V is the same as note (1).