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 254.124 - New source performance standards
The discharge of wastewater pollutants from any new source subject to this subchapter may not exceed the following standards:
Table 203
Strip, Sheet, and Miscellaneous Products Galvanizing, Terne Coating, and Other Coatings
|
NSPS |
||
|
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 |
|
|
TSS |
0.0438 |
0.0188 |
|
O&G |
0.0188 |
0.00626 |
|
Lead |
0.000282 |
0.0000939 |
|
Zinc |
0.000376 |
0.000125 |
|
Hexavalent chro-mium(1) |
0.0000376 |
0.0000125 |
|
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
Table 204
Wire Products and Fasteners Galvanizing and Other Coatings
|
NSPS |
||
|
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 |
|
|
TSS |
0.175 |
0.0751 |
|
O&G |
0.0751 |
0.0250 |
|
Lead |
0.00113 |
0.000376 |
|
Zinc |
0.00150 |
0.000500 |
|
Hexavalent chro-mium(1) |
0.000150 |
0.0000501 |
|
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
Table 205
Fume Scrubbers
|
NSPS |
||
|
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
|
Pollutant or pollutant property |
kg per day for each fume scrubber |
|
|
TSS |
5.72 |
2.45 |
|
O&G |
2.45 |
0.819 |
|
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
