Title 40
SECTION 421.284
421.284 Standards of performance for new sources.
§ 421.284 Standards of performance for new sources.Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Tantalum alloy leach and rinse.
NSPS 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 | 295.200 | 140.700 |
| Lead | 64.570 | 29.980 |
| Nickel | 126.800 | 85.320 |
| Zinc | 235.200 | 96.850 |
| Tantalum | 103.800 | |
| Total suspended solids | 3,459.000 | 2,767.000 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
(b) Capacitor leach and rinse.
NSPS 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 | 25.860 | 12.320 |
| Lead | 5.656 | 2.626 |
| Nickel | 11.110 | 7.474 |
| Zinc | 20.600 | 8.484 |
| Tantalum | 9.090 | |
| Total suspended solids | 303.000 | 242.400 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
(c) Tantalum sludge leach and rinse.
NSPS 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 | 262.800 | 125.200 |
| Lead | 57.480 | 26.690 |
| Nickel | 112.900 | 75.960 |
| Zinc | 209.400 | 86.230 |
| Tantalum | 92.390 | |
| Total suspended solids | 3,080.000 | 2,464.000 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
(d) Tantalum powder acid wash and rinse.
NSPS 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 | 0.448 | 0.214 |
| Lead | 0.098 | 0.046 |
| Nickel | 0.193 | 0.130 |
| Zinc | 0.357 | 0.147 |
| Tantalum | 0.158 | |
| Total suspended solids | 5.250 | 4.200 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
(e) Leaching wet air pollution control.
NSPS 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 | 6.246 | 2.977 |
| Lead | 1.366 | 0.634 |
| Nickel | 2.684 | 1.806 |
| Zinc | 4.978 | 2.050 |
| Tantalum | 2.196 | |
| Total suspended solids | 73.200 | 58.560 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.