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) Sand drying wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 0.250 | 0.102 |
| Cyanide (total) | 0.165 | 0.068 |
| Lead | 0.239 | 0.114 |
| Nickel | 1.091 | 0.721 |
| Ammonia (as N) | 75.710 | 33.280 |
| Total suspended solids | 23.290 | 11.080 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(b) Sand chlorination off-gas wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zironium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 19.130 | 7.825 |
| Cyanide (total) | 12.610 | 5.216 |
| Lead | 18.260 | 8.694 |
| Nickel | 83.460 | 55.210 |
| Ammonia (as N) | 5,795.000 | 2,547.000 |
| Total suspended solids | 1,782.000 | 847.700 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(c) Sand chlorination area-vent wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 3.751 | 1.534 |
| Cyanide (total) | 2.472 | 1.023 |
| Lead | 3.580 | 1.705 |
| Nickel | 16.370 | 10.830 |
| Ammonia (as N) | 1,136.000 | 449.500 |
| Total suspended solids | 349.500 | 166.200 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(d) SiCl4 purification wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 3.299 | 1.350 |
| Cyanide (total) | 2.174 | 0.900 |
| Lead | 3.149 | 1.500 |
| Nickel | 14.400 | 9.522 |
| Ammonia (as N) | 999.500 | 439.400 |
| Total suspended solids | 307.400 | 146.200 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(e) Feed makeup wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 2.501 | 1.023 |
| Cyanide (total) | 1.648 | 0.682 |
| Lead | 2.387 | 1.137 |
| Nickel | 10.910 | 7.217 |
| Ammonia (as N) | 757.500 | 333.000 |
| Total suspended solids | 233.000 | 110.800 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(f) Iron extraction (MIBK) steam stripper bottoms.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 0.987 | 0.404 |
| Cyanide (total) | 0.651 | 0.269 |
| Lead | 0.942 | 0.449 |
| Nickel | 4.308 | 2.850 |
| Ammonia (as N) | 299.100 | 131.500 |
| Total suspended solids | 92.000 | 43.760 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(g) Zirconium filtrate.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 17.070 | 6.982 |
| Cyanide (total) | 11.250 | 4.655 |
| Lead | 16.290 | 7.758 |
| Nickel | 74.480 | 49.260 |
| Ammonia (as N) | 5,171.000 | 2,273.000 |
| Total suspended solids | 1,590.000 | 756.400 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(h) Hafnium filtrate.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 0.000 | 0.000 |
| Cyanide (total) | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Ammonia (as N) | 0.000 | 0.000 |
| Total suspended solids | 0.000 | 0.000 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(i) Calcining caustic wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced | ||
| Chromium (total) | 3.959 | 1.619 |
| Cyanide (total) | 2.609 | 1.080 |
| Lead | 3.779 | 1.799 |
| Nickel | 17.270 | 11.430 |
| Ammonia (as N) | 1,199.000 | 527.200 |
| Total suspended solids | 368.900 | 175.400 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(j) Pure chlorination wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium and hafnium produced | ||
| Chromium (total) | 16.860 | 6.897 |
| Cyanide (total) | 11.110 | 4.598 |
| Lead | 16.090 | 7.663 |
| Nickel | 73.570 | 48.660 |
| Ammonia (as N) | 5,108.000 | 2,245.000 |
| Total suspended solids | 1,571.000 | 747.200 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(k) Reduction area-vent wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium and hafnium produced | ||
| Chromium (total) | 1.622 | 0.663 |
| Cyanide (total) | 1.069 | 0.442 |
| Lead | 1.548 | 0.737 |
| Nickel | 7.077 | 4.681 |
| Ammonia (as N) | 491.300 | 216.000 |
| Total suspended solids | 151.100 | 71.880 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(l) Magnesium recovery off-gas wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium and hafnium produced | ||
| Chromium (total) | 9.123 | 3.732 |
| Cyanide (total) | 6.013 | 2.488 |
| Lead | 8.708 | 4.147 |
| Nickel | 39.810 | 26.330 |
| Ammonia (as N) | 2,764.000 | 1,215.000 |
| Total suspended solids | 850.100 | 404.300 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(m) Magnesium recovery area-vent wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium and hafnium produced | ||
| Chromium (total) | 5.068 | 2.073 |
| Cyanide (total) | 3.340 | 1.382 |
| Lead | 4.838 | 2.304 |
| Nickel | 22.110 | 14.630 |
| Ammonia (as N) | 1,535.000 | 675.000 |
| Total suspended solids | 472.200 | 224.600 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0. .
(n) Zirconium chip crushing wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium and hafnium produced | ||
| Chromium (total) | 0.000 | 0.000 |
| Cyanide (total) | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Ammonia (as N) | 0.000 | 0.000 |
| Total suspended solids | 0.000 | 0.000 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(o) Acid leachate from zirconium metal production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of pure zirconium produced | ||
| Chromium (total) | 12.970 | 5.304 |
| Cyanide (total- | 8.545 | 3.536 |
| Lead | 12.380 | 5.893 |
| Nickel | 56.570 | 37.420 |
| Ammonia (as N) | 3,928.000 | 1,727.000 |
| Total suspended solids | 1,208.000 | 574.600 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(p) Acid leachate from zirconium alloy production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium contained in alloys produced | ||
| Chromium (total) | 6.939 | 2.839 |
| Cyanide (total) | 4.574 | 1.893 |
| Lead | 6.624 | 3.154 |
| Nickel | 30.280 | 20.030 |
| Ammonia (as N) | 2,102.000 | 924.200 |
| Total suspended solids | 646.600 | 307.600 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(q) Leaching rinse water from zirconium metal production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium produced | ||
| Chromium (total) | 25.930 | 10.610 |
| Cyanide (total) | 17.090 | 7.072 |
| Lead | 24.750 | 11.790 |
| Nickel | 113.200 | 74.840 |
| Ammonia (as N) | 7,856.000 | 3,453.000 |
| Total suspended solids | 2,416.000 | 1,149.000 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0.
(r) Leaching rinse water from zirconium alloy production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of zirconium in alloys produced | ||
| Chromium (total) | 0.347 | 0.142 |
| Cyanide (total) | 0.229 | 0.095 |
| Lead | 0.331 | 0.158 |
| Nickel | 1.515 | 1.002 |
| Ammonia (as N) | 105.200 | 46.240 |
| Total suspended solids | 32.350 | 15.390 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
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