40 C.F.R. § 421.112
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:
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of concentrate digested | ||
| Lead | 2.612 | 1.244 |
| Zinc | 9.080 | 3.794 |
| Ammonia (as N) | 829.000 | 364.500 |
| Fluoride | 217.700 | 124.400 |
| Total suspended solids | 255.000 | 121.300 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of concentrate digested | ||
| Lead | 3.888 | 1.851 |
| Zinc | 13.520 | 5.647 |
| Ammonia (as N) | 1,233.000 | 542.500 |
| Fluoride | 324.000 | 185.100 |
| Total Suspended Solids | 379.500 | 189.500 |
| pH | (1) | (1) |
Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of concentrate digested | ||
| Lead | 1.032 | .491 |
| Zinc | 3.586 | 1.498 |
| Ammonia (as N) | 327.400 | 143.900 |
| Fluoride | 85.960 | 49.120 |
| Total suspended solids | 100.700 | 47.890 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of concentrate digested | ||
| Lead | 5.750 | 2.738 |
| Zinc | 19.990 | 8.350 |
| Ammonia (as N) | 1,825.000 | 802.200 |
| Fluoride | 479.100 | 273.800 |
| Total suspended solids | 561.300 | 267.000 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of concentrate digested | ||
| Lead | 26.680 | 12.700 |
| Zinc | 92.730 | 38.740 |
| Ammonia (as N) | 8,466.000 | 3,722.000 |
| Fluoride | 2,223.000 | 1,270.000 |
| Total suspended solids | 2,604.000 | 1,239.000 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of tantalum salt dried | ||
| Lead | 25.430 | 12.110 |
| Zinc | 88.390 | 36.930 |
| Ammonia (as N) | 8,070.000 | 3,548.000 |
| Fluoride | 2,119.000 | 1,211.000 |
| Total suspended solids | 2,482.000 | 1,181.000 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of columbium-tantalum oxide dried | ||
| Lead | 16.140 | 7.685 |
| Zinc | 56.100 | 23.440 |
| Ammonia (as N) | 5,122.000 | 2,252.000 |
| Fluoride | 1,345.000 | 768.500 |
| Total suspended solids | 1,576.000 | 749.200 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of tantalum salt reduced | ||
| Lead | 69.750 | 33.220 |
| Zinc | 242.500 | 101.300 |
| Ammonia (as N) | 22,140.000 | 9,732.000 |
| Fluoride | 5,813.000 | 3,322.000 |
| Total suspended solids | 6,809.000 | 3,239.000 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of tantalum salt reduced | ||
| Lead | .858 | .409 |
| Zinc | 2.983 | 1.246 |
| Ammonia (as N) | 272.400 | 119.700 |
| Fluoride | 71.510 | 40.860 |
| Total suspended solids | 83.770 | 39.840 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of tantalum power washed | ||
| Lead | 8.582 | 4.087 |
| Zinc | 29.830 | 12.470 |
| Ammonia (as N) | 2,724.000 | 1,198.000 |
| Fluoride | 715.200 | 408.700 |
| Total suspended solids | 837.800 | 398.500 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| mg/kg (pounds per million pounds) of columbium or tantalum cast or consolidated | ||
| Lead | .000 | .000 |
| Zinc | .000 | .000 |
| Ammonia (as N) | .000 | .000 |
| Fluoride | .000 | .000 |
| Total suspended solids | .000 | .000 |
| pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
40 C.F.R. §421.112