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 VIII - Salt Bath Descaling Subcategory
Section NR 254.083 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable
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 application of BAT:
Table 69
Sheet And Plate Batch Oxidizing Salt Bath Descaling
| BPT 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 |
|
|
Chromium |
0.00292 |
0.00117 |
|
Nickel |
0.00263 |
0.000876 |
Table 70
Rod And Wire Batch Oxidizing Salt Bath Descaling
| BPT 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 |
|
|
Chromium |
0.00175 |
0.000701 |
|
Nickel |
0.00158 |
0.000526 |
Table 71
Pipe And Tube Batch Oxidizing Salt Bath Descaling
| BPT 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 |
|
|
Chromium |
0.00709 |
0.00284 |
|
Nickel |
0.00638 |
0.00213 |
Table 72
Continuous Oxidizing Salt Bath Descaling
| BPT 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 |
|
|
Chromium |
0.00138 |
0.000551 |
|
Nickel |
0.00124 |
0.000413 |
Table 73
Batch Reducing Salt Bath Descaling
| BPT 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 |
|
|
Cyanide |
0.00102 |
0.000339 |
|
Chromium |
0.00136 |
0.000542 |
|
Nickel |
0.00122 |
0.000407 |
Table 74
Continuous Reducing Salt Bath Descaling
| BPT 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 |
|
|
Cyanide |
0.00569 |
0.00190 |
|
Chromium |
0.00759 |
0.00304 |
|
Nickel |
0.00683 |
0.00228 |
