Wis. Admin. Code Department of Natural Resources NR 279.56

Current through November 25, 2024

Section NR 279.56 - Standards of performance for new sources (NSPS)

(1) Any new source subject to this subcategory shall achieve the following new source performance standards (NSPS):

NSPS effluent limitations
Pollutant or pollutant property	Maximum for any 1 day	Average of daily values for 30 consecutive days
Metric units (kilograms per 1,000 m³of feedstock)
BOD₅	41.6	22.1
TSS	28.1	17.9
COD¹	295.0	152.0
Oil and grease	12.6	6.7
Phenolic compounds	0.3	0.14
Ammonia as N	23.4	10.7
Sulfide	0.26	0.12
Total chromium	0.64	0.37
Hexavalent chromium	0.052	0.024
pH	(2)	(2)
English units (pounds per 1,000 bbl of feedstock)
BOD₅	14.7	7.8
TSS	9.9	6.3
COD¹	104.0	54.0
Oil and grease	4.5	2.4
Phenolic compounds	0.105	0.051
Ammonia as N	8.3	3.8
Sulfide	0.093	0.042
Total chromium	0.22	0.13
Hexavalent chromium	0.019	0.0084
pH	(2)	(2)

¹See footnote following table in s. NR 279.13(4).

²Within the range of 6.0 to 9.0.

(2) The limits set forth in sub. (1) shall be multiplied by the following factors to calculate the maximum for any one day and maximum average of daily values for 30 consecutive days.

(a) Size factor.

1000 bbl. of feedstock per stream day	Size factor
Less than 124.9	0.73
125.0 to 149.9	0.76
150.0 to 174.9	0.83
175.0 to 199.9	0.91
200.0 to 224.9	0.99
225.0 or greater	1.04

(b) Process factor.

Process configuration	Process factor
Less than 6.49	0.75
6.5 to 7.49	0.82
7.5 to 7.99	0.92
8.0 to 8.49	1.0
8.5 to 8.99	1.1
9.0 to 9.49	1.2
9.5 to 9.99	1.3
10.0 to 10.49	1.42
10.5 to 10.99	1.54
11.0 to 11.49	1.68
11.5 to 11.99	1.83
12.0 to 12.49	1.99
12.5 to 12.99	2.17
13.0 or greater	2.26

Note: See the comprehensive example in s. NR 279.42(2) (c).

(3) The provisions of s. NR 279.16(3) apply to discharges of process wastewater pollutants attributable to ballast water by a point source subject to the provisions of this subcategory.

(4) The quantity and quality of pollutants or pollutant properties controlled by this subsection, attributable to once-through cooling water, are excluded from the discharge allowed by sub. (2). Once-through cooling water may be discharged with a total organic carbon concentration not to exceed 5 mg/l.

Wis. Admin. Code Department of Natural Resources NR 279.56

Cr. Register, October, 1986, No. 370, eff. 11-1-86.