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 254.126 - Pretreatment standards for new sources
Except as provided in s. NR 211.13, any new source subject to this subchapter which introduces pollutants into a POTW shall comply with ch. NR 211 and achieve the following PSNS:
Table 206
Strip, Sheet, and Miscellaneous Products Galvanizing, Terne Coating, and Other Coatings
|
PSNS |
||
|
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 |
0.000282 |
0.0000939 |
|
Zinc |
0.000376 |
0.000125 |
|
Hexavalent chro-mium(1) |
0.0000376 |
0.0000125 |
(1) The limitations for hexavalent chromium apply to galvanizing operations which discharge wastewaters from the chromate rinse step.
Table 207
Wire Products and Fasteners Galvanizing and Other Coatings
|
PSNS |
||
|
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 208
Fume Scrubbers
|
PSNS |
||
|
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 |
(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
