Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:
(a) Raw material dust control.
BAT Limitations for the Primary Nickel and Cobalt Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material | ||
| Copper | 0.099 | 0.047 |
| Nickel | 0.042 | 0.028 |
| Ammonia (as N) | 10.260 | 4.512 |
| Cobalt | 0.011 | 0.005 |
(b) Nickel wash water.
BAT Limitations for the Primary Nickel and Cobalt Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of nickel powder washed | ||
| Copper | 0.043 | 0.021 |
| Nickel | 0.019 | 0.013 |
| Ammonia (as N) | 4.515 | 1.985 |
| Cobalt | 0.005 | 0.002 |
(c) Nickel reduction decant.
BAT Limitations for the Primary Nickel and Cobalt Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of nickel produced | ||
| Copper | 16.250 | 7.744 |
| Nickel | 6.982 | 4.697 |
| Ammonia (as N) | 1,692.000 | 743.900 |
| Cobalt | 1.777 | 0.889 |
(d) Cobalt reduction decant.
BAT Limitations for the Primary Nickel and Cobalt Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of cobalt produced | ||
| Copper | 27.390 | 13.050 |
| Nickel | 11.770 | 7.917 |
| Ammonia (as N) | 2,852.000 | 1,254.000 |
| Cobalt | 2.996 | 1.498 |
[50 FR 38359, Sept. 20, 1985; 50 FR 41144, Oct. 9, 1985]