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§ 421.316 Pretreatment standards for new sources.
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 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in secondary tungsten and cobalt process wastewater introduced into a POTW shall not exceed the following values:
(a) Tungsten detergent wash and rinse.
PSNS for the Secondary Tungsten and Cobalt Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of tungsten scrap washed | ||
| Copper | 0.250 | 0.119 |
| Nickel | 0.107 | 0.072 |
| Ammonia (as N) | 25.990 | 11.430 |
| Cobalt | 0.538 | 0.236 |
| Tungsten | 0.679 | 0.302 |
(b) Tungsten leaching acid.
PSNS for the Secondary Tungsten and Cobalt Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of tungsten produced | ||
| Copper | 3.291 | 1.569 |
| Nickel | 1.414 | 0.951 |
| Ammonia (as N) | 342.700 | 150.700 |
| Cobalt | 7.096 | 3.111 |
| Tungsten | 8.947 | 3.985 |