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 practicable technology currently available:
(a) Tantalum alloy leach and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of tantalum powder produced | ||
| Copper | 438.100 | 230.600 |
| Lead | 96.850 | 46.120 |
| Nickel | 442.800 | 292.900 |
| Zinc | 336.700 | 140.700 |
| Tantalum | 103.800 | |
| Total suspended solids | 9,455.000 | 4,497.000 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(b) Capacitor leach and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of tantalum powder produced from leaching | ||
| Copper | 38.380 | 20.200 |
| Lead | 8.484 | 4.040 |
| Nickel | 38.780 | 25.650 |
| Zinc | 29.490 | 12.320 |
| Tantalum | 9.090 | |
| Total suspended solids | 828.200 | 393.900 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(c) Tantalum sludge leach and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced | ||
| Copper | 390.100 | 205.300 |
| Lead | 86.230 | 41.060 |
| Nickel | 394.200 | 260.700 |
| Zinc | 299.700 | 125.200 |
| Tantalum | 92.390 | |
| Total suspended solids | 8,417.000 | 4,003.000 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(d) Tantalum powder acid wash and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of tantalum powder produced | ||
| Copper | 0.665 | 0.350 |
| Lead | 0.147 | 0.070 |
| Nickel | 0.672 | 0.445 |
| Zinc | 0.511 | 0.214 |
| Tantalum | 0.158 | |
| Total suspended solids | 14.350 | 6.825 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(e) Leaching wet air pollution control.
BPT Limitations for the Secondary Tantalum Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced | ||
| Copper | 9.272 | 4.880 |
| Lead | 2.050 | 0.976 |
| Nickel | 9.370 | 6.198 |
| Zinc | 7.125 | 2.977 |
| Tantalum | 2.196 | |
| Total suspended solids | 200.100 | 95.160 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
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