Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 254 - Iron and steel manufacturing
Subchapter XII - Hot Coating Subcategory
Section NR 254.123 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable

Universal Citation: WI Admin Code § NR 254.123

Current through August 26, 2024

Except as provided in 40 CFR 125.30 to 125.32, any existing point source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BAT:

Table 200

Strip, Sheet, and Miscellaneous Products Galvanizing, Terne Coating, and Other Coatings

BAT	Effluent Limitations
Maximum for any 1 day	Average of daily values for 30 consecutive days
Pollutant or pollutant property	kg/kkg (pounds per 1,000 pounds) of product
Lead	0.00113	0.000376
Zinc	0.00150	0.000500
Hexavalent chro-mium(1)	0.000150	0.0000501

(1) The limitations for hexavalent chromium apply to galvanizing operations which discharge wastewaters from the chromate rinse step.

Table 201

Wire Products and Fasteners Galvanizing and Other Coatings

BAT Effluent Limitations
Maximum for any 1 day	Average of daily values for 30 consecutive days
Pollutant or pollutant property	kg/kkg (pounds per 1,000 pounds) of product
Lead	0.00451	0.00150
Zinc	0.00601	0.00200
Hexavalent chro-mium(1)	0.000601	0.000200

(1) The limitations for hexavalent chromium apply to galvanizing operations which discharge wastewaters from the chromate rinse step.

Table 202

Fume Scrubbers

BAT Effluent Limitations
Maximum for any 1 day	Average of daily values for 30 consecutive days
Pollutant or pollutant property	kg per day for each fume scrubber
Lead	0.0368	0.0123
Zinc	0.0491	0.0164
Hexavalent chro-mium(1)	0.00490	0.00163
pH	(2)	(2)

(1) The limitations for hexavalent chromium apply to galvanizing operations which discharge wastewaters from the chromate rinse step.

(2) Within the range of 6.0 to 9.0

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