Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with a 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary nickel and cobalt process wastewater introduced into a POTW shall not exceed the following values:
(a) Raw material dust control.
PSNS 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.
PSNS 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.
PSNS 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) 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.
PSNS 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 |
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