Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 274 - Nonferrous metals manufacturing
Subchapter IX - Metallurgical Acid Plants
Section NR 274.092 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
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 BPT:
Table 9-1
Metallurgical Acid Plants
|
BPT Effluent Limitations |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of 100% sulfuric acid capacity |
|
|
Cadmium |
0.180 |
0.090 |
|
Copper |
5.000 |
2.000 |
|
Lead |
1.800 |
0.790 |
|
Zinc |
3.600 |
0.900 |
|
Fluoride (1) |
212.800 |
121.000 |
|
Molybdenum (1) |
40.180 |
20.790 |
|
Total suspended solids |
304.000 |
152.000 |
|
pH |
(2) |
(2) |
(1) For molybdenum acid plants only
(2) Within the range of 6.0 to 9.0 at all times.
