Wis. Admin. Code Department of Natural Resources NR 221.10

Current through October 28, 2024

Section NR 221.10 - Effluent limitations, 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.

(1) For subcategories (5), (8) and (10) identified in s. NR 221.02 there shall be no discharge of process wastewaters to surface waters.

(2) The pH of all discharges shall be within the range of 6.0 to 9.0.

(3) The 30-day average and daily maximum limitations for suspended solids and COD are set forth in table 1:

(a) For subcategories (1), (2), (3), (4), (6) and (9) in lbs/1000 lbs. or kg/1000 kg of product,

(b) For subcategory (7) in lbs/Mpc and below that in parenthesis in kg/Mpc, and

(c) For subcategory (11) in lbs/million std. cu. ft. and below that in parenthesis in kg/1000 std. cu. m. of air scrubbed.

TABLE 1

BPT EFFLUENT LIMIT ATIONS

Suspended Solids			COD
Subcategory*	Average	Maximum	Average	Maximum
1	0.19	0.57
2	0.23	0.68
3	0.35	0.55
4	0.35	0.55
6	0.006	0.01	0.008	0.015
7	0.08	0.013	0.18	0.30
(0.04)	(0.06)	(0.09)	(0.14)
9	0.09	0.18	0.15	0.30
11	2.50	5.0
0.04	(0.08)

Wis. Admin. Code Department of Natural Resources NR 221.10

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

Amended by, Cr. Register, correction in (intro.) made under s. 13.92(4) (b) 7, Stats., Register April 2018 No. 748, eff.5/1/2018