CFR
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421.185—Pretreatment standards for existing sources.
Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources. The mass of wastewater pollutants in primary and secondary germanium and gallium process wastewater introduced into a POTW must not exceed the following values:
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of germanium chlorinated | ||
| Arsenic | 131.70 | 58.59 |
| Lead | 26.46 | 12.60 |
| Zinc | 91.98 | 38.43 |
| Fluoride | 2,205.00 | 1,254.00 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of germanium chlorinated | ||
| Arsenic | 27.530 | 12.250 |
| Lead | 5.531 | 2.634 |
| Zinc | 19.230 | 8.034 |
| Fluoride | 461.000 | 262.100 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of germanium hydrolyzed | ||
| Arsenic | 39.440 | 17.550 |
| Lead | 7.925 | 3.774 |
| Zinc | 27.550 | 11.510 |
| Fluoride | 660.500 | 375.500 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of germanium washed | ||
| Arsenic | 325.50 | 144.80 |
| Lead | 65.40 | 31.14 |
| Zinc | 227.40 | 94.99 |
| Fluoride | 5,450.00 | 3,099.00 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of gallium hydrolyzed | ||
| Arsenic | 70.450 | 31.350 |
| Lead | 14.160 | 6.742 |
| Zinc | 49.220 | 20.560 |
| Fluoride | 1,180.000 | 670.800 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of gallium produced by solvent extraction | ||
| Arsenic | 39.330 | 17.500 |
| Lead | 7.904 | 3.764 |
| Zinc | 27.480 | 11.480 |
| Fluoride | 658.700 | 374.500 |
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