Wis. Admin. Code Department of Natural Resources NR 274.232
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 23-1
Primary Nickel and Cobalt Raw Material Dust Control
BPT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of copper, nickel, and cobalt in crushed raw material | |
Copper | 0.146 | 0.077 |
Nickel | 0.148 | 0.098 |
Ammonia (as N) | 10.260 | 4.512 |
Cobalt | 0.016 | 0.007 |
Total suspended solids | 3.157 | 1.502 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 23-2
Primary Nickel and Cobalt Nickel Wash Water
BPT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of nickel powder washed | |
Copper | 0.064 | 0.034 |
Nickel | 0.065 | 0.043 |
Ammonia (as N) | 4.515 | 1.985 |
Cobalt | 0.007 | 0.003 |
Total suspended solids | 1.389 | 0.660 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 23-3
Primary Nickel and Cobalt Nickel Reduction Decant
BPT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of nickel produced | |
Copper | 24.120 | 12.700 |
Nickel | 24.370 | 16.120 |
Ammonia (as N) | 1,692.000 | 743.900 |
Cobalt | 2.666 | 1.143 |
Total suspended solids | 520.500 | 247.600 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 23-4
Primary Nickel and Cobalt Cobalt Reduction Decant
BPT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of cobalt produced | |
Copper | 40.660 | 21.400 |
Nickel | 41.080 | 27.180 |
Ammonia (as N) | 2,852.000 | 1,254.000 |
Cobalt | 4.494 | 1.926 |
Total suspended solids | 877.300 | 417.300 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times.
Wis. Admin. Code Department of Natural Resources NR 274.232