Wis. Admin. Code NR 258.12
Standards of performance
Cite as Wis. Admin. Code NR § 258.12
Standards of performance.
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.
(1) The pH of all discharges shall be within the 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 400/100 ml.
(3) The BOD 5 , 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.
(4) For a renderer who conducts hide curing the effluent limitations for the renderer subcategory in table 3 shall be increased by adding;
(a) To the limitation for BOD 5 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
(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.