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Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4.
49 FR 8790, Mar. 8, 1984, unless otherwise noted.
50 FR 38395, Sept. 20, 1985, unless otherwise noted.
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Subscribe to: 40 CFR Part 421 Subpart AE
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50 FR 38395, Sept. 20, 1985, unless otherwise noted.
The provisions of this subpart are applicable to discharges resulting from the production of zirconium or hafnium at primary zirconium and hafnium facilities. There are two levels of BPT, BAT, NSPS, PSES and PSNS provisions for this subpart. Facilities which only produce zirconium or zirconium/nickel alloys by magnesium reduction of zirconium dioxide are exempt from regulations. All other facilities are subject to these regulations.
For the purpose of this subpart the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.
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.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(b) Sand chlorination off-gas wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(c) Sand chlorination area-vent wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(d) SiCl4 purification wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(e) Feed makeup wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(f) Iron extraction (MIBK) steam stripper bottoms.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(g) Zirconium filtrate.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(h) Hafnium filtrate.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(i) Calcining caustic wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(j) Pure chlorination wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(k) Reduction area-vent wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(l) Magnesium recovery off-gas wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(m) Magnesium recovery area-vent wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0. . | ||
(n) Zirconium chip crushing wet air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(o) Acid leachate from zirconium metal production.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(p) Acid leachate from zirconium alloy production.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(q) Leaching rinse water from zirconium metal production.
| 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) |
| 1 Within the range of 7.5 to 10.0. | ||
(r) Leaching rinse water from zirconium alloy production.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
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 available technology economically achievable:
(a) Sand drying wet air pollution control.
| 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) | 0.210 | 0.085 |
| Cyanide (total) | 0.114 | 0.045 |
| Lead | 0.159 | 0.074 |
| Nickel | 0.312 | 0.210 |
| Ammonia (as N) | 75.710 | 33.280 |
(b) Sand chlorination off-gas wet air pollution control.
| 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) | 16.080 | 6.521 |
| Cyanide (total) | 8.694 | 3.478 |
| Lead | 12.170 | 5.651 |
| Nickel | 23.910 | 16.080 |
| Ammonia (as N) | 5,795.000 | 2,547.000 |
(c) Sand chlorination area-vent wet air pollution control.
| 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) | 3.154 | 1.279 |
| Cyanide (total) | 1.705 | 0.682 |
| Lead | 2.387 | 1.108 |
| Nickel | 4.688 | 3.154 |
| Ammonia (as N) | 1,136.000 | 499.500 |
(d) SiCl4 purification wet air pollution control.
| 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) | 2.774 | 1.125 |
| Cyanide (total) | 1.500 | 0.600 |
| Lead | 2.099 | 0.975 |
| Nickel | 4.124 | 2.774 |
| Ammonia (as N) | 999.500 | 439.400 |
(e) Feed makeup wet air pollution control.
| 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) | 2.103 | 0.852 |
| Cyanide (total) | 1.137 | 0.455 |
| Lead | 1.591 | 0.739 |
| Nickel | 3.126 | 2.103 |
| Ammonia (as N) | 757.500 | 333.000 |
(f) Iron extraction (MIBK) steam stripper bottoms.
| 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) | 0.830 | 0.337 |
| Cyanide (total) | 0.449 | 0.180 |
| Lead | 0.628 | 0.292 |
| Nickel | 1.234 | 0.830 |
| Ammonia (as N) | 299.100 | 131.500 |
(g) Zirconium filtrate.
| 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) | 14.350 | 5.819 |
| Cyanide (total) | 7.758 | 3.103 |
| Lead | 10.860 | 5.043 |
| Nickel | 21.330 | 14.350 |
| Ammonia (as N) | 5,171.000 | 2,273.00 |
(h) Hafnium filtrate.
| 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 |
(i) Calcining caustic wet air pollution control.
| 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) | 3.329 | 1.350 |
| Cyanide (total) | 1.799 | 0.720 |
| Lead | 2.519 | 1.170 |
| Nickel | 4.948 | 3.329 |
| Ammonia (as N) | 1,199.000 | 527.200 |
(j) Pure chlorination wet air pollution control.
| 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) | 14.180 | 5.748 |
| Cyanide (total) | 7.663 | 3.065 |
| Lead | 10.730 | 4.981 |
| Nickel | 21.070 | 14.180 |
| Ammonia (as N) | 5,108.000 | 2,245.000 |
(k) Reduction area-vent wet air pollution control.
| 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) | 1.364 | 0.553 |
| Cyanide (total) | 0.737 | 0.295 |
| Lead | 1.032 | 0.479 |
| Nickel | 2.027 | 1.364 |
| Ammonia (as N) | 491.300 | 216.000 |
(l) Magnesium recovery off-gas wet air pollution control.
| 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) | 7.671 | 3.110 |
| Cyanide (total) | 4.147 | 1.659 |
| Lead | 5.805 | 2.695 |
| Nickel | 11.400 | 7.671 |
| Ammonia (as N) | 2,764.000 | 1,215.000 |
(m) Magnesium recovery area-vent wet air pollution control.
| 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) | 4.262 | 1.728 |
| Cyanide (total) | 2.304 | 0.921 |
| Lead | 3.225 | 1.497 |
| Nickel | 6.335 | 4.262 |
| Ammonia (as N) | 1,535.000 | 675.000 |
(n) Zirconium chip crushing wet air pollution control.
| 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 |
(o) Acid leachate from zirconium metal production.
| 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) | 10.900 | 4.420 |
| Cyanide (total) | 5.893 | 2.357 |
| Lead | 8.250 | 3.831 |
| Nickel | 16.210 | 10.900 |
| Ammonia (as N) | 3,928.000 | 1,674.000 |
(p) Acid leachate from zirconium alloy production.
| 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) | 5.835 | 2.366 |
| Cyanide (total) | 3.154 | 1.262 |
| Lead | 4.416 | 2.050 |
| Nickel | 8.674 | 5.835 |
| Ammonia (as N) | 2,102.000 | 895.000 |
(q) Leaching rinse water from zirconium metal production.
| 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) | 21.810 | 8.840 |
| Cyanide (total) | 11.790 | 4.715 |
| Lead | 16.500 | 7.661 |
| Nickel | 32.410 | 21.810 |
| Ammonia (as N) | 7,856.000 | 3,453.000 |
(r) Leaching rinse water from zirconium alloy production.
| 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) | 0.292 | 0.118 |
| Cyanide (total) | 0.158 | 0.063 |
| Lead | 0.221 | 0.103 |
| Nickel | 0.434 | 0.292 |
| Ammonia (as N) | 105.200 | 46.240 |
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Sand drying wet air pollution control.
| 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) | 0.210 | 0.085 |
| Cyanide (total) | 0.114 | 0.045 |
| Lead | 0.159 | 0.074 |
| Nickel | 0.312 | 0.210 |
| Ammonia (as N) | 75.710 | 33.280 |
| Total suspended solids | 8.520 | 6.816 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(b) Sand chlorination off-gas wet air pollution control.
| 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) | 16.080 | 6.521 |
| Cyanide (total) | 8.694 | 3.478 |
| Lead | 12.170 | 5.651 |
| Nickel | 23.910 | 16.080 |
| Ammonia (as N) | 5,795.000 | 2,547.000 |
| Total suspended solids | 652.100 | 521.000 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(c) Sand chlorination area-vent wet air pollution control.
| 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) | 3.154 | 1.279 |
| Cyanide (total) | 1.705 | 0.682 |
| Lead | 2.387 | 1.108 |
| Nickel | 4.688 | 3.154 |
| Ammonia (as N) | 1,136.000 | 499.500 |
| Total suspended solids | 127.900 | 102.300 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(d) SiC14 purification wet air pollution control.
| 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) | 2.774 | 1.125 |
| Cyanide (total) | 1.500 | 0.600 |
| Lead | 2.099 | 0.975 |
| Nickel | 4.124 | 2.774 |
| Ammonia (as N) | 999.500 | 439.400 |
| Total suspended solids | 112.500 | 89.980 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(e) Feed makeup wet air pollution control.
| 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) | 2.103 | 0.852 |
| Cyanide (total) | 1.137 | 0.455 |
| Lead | 1.591 | 0.739 |
| Nickel | 3.126 | 2.103 |
| Ammonia (as N) | 757.500 | 333.000 |
| Total suspended solids | 85.250 | 68.200 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(f) Iron extraction (MIBK) steam stripper bottoms.
| 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) | 0.830 | 0.337 |
| Cyanide (total) | 0.449 | 0.180 |
| Lead | 0.628 | 0.292 |
| Nickel | 1.234 | 0.830 |
| Ammonia (as N) | 299.100 | 131.500 |
| Total suspended solids | 33.660 | 26.930 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(g) Zirconium filtrate.
| 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) | 14.350 | 5.819 |
| Cyanide (total) | 7.758 | 3.103 |
| Lead | 10.860 | 5.043 |
| Nickel | 21.330 | 14.350 |
| Ammonia (as N) | 5,171.000 | 2,273.000 |
| Total suspended solids | 581.900 | 465.500 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(h) Hafnium filtrate.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(i) Calcining caustic wet air pollution control.
| 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) | 3.329 | 1.350 |
| Cyanide (total) | 1.799 | 0.720 |
| Lead | 2.519 | 1.170 |
| Nickel | 4.948 | 3.329 |
| Ammonia (as N) | 1,199.000 | 527.200 |
| Total suspended solids | 135.000 | 108.000 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(j) Pure chlorination wet air pollution control.
| 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) | 14.180 | 5.748 |
| Cyanide (total) | 7.663 | 3.065 |
| Lead | 10.730 | 4.981 |
| Nickel | 21.070 | 14.180 |
| Ammonia (as N) | 5,108.000 | 2,245.000 |
| Total suspended solids | 574.800 | 459.800 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(k) Reduction area-vent wet air pollution control.
| 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) | 1.364 | 0.553 |
| Cyanide (total) | 0.737 | 0.295 |
| Lead | 1.032 | 0.479 |
| Nickel | 2.027 | 1.364 |
| Ammonia (as N) | 491.300 | 216.000 |
| Total suspended solids | 55.290 | 44.230 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(l) Magnesium recovery off-gas wet air pollution control.
| 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) | 7.671 | 3.110 |
| Cyanide (total) | 4.147 | 1.659 |
| Lead | 5.805 | 2.695 |
| Nickel | 11.400 | 7.671 |
| Ammonia (as N) | 2,764.000 | 1,215.000 |
| Total suspended solids | 404.300 | 248.800 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(m) Magnesium recovery area-vent wet air pollution control.
| 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) | 4.262 | 1.728 |
| Cyanide (total) | 2.304 | 0.921 |
| Lead | 3.225 | 1.497 |
| Nickel | 6.335 | 4.262 |
| Ammonia (as N) | 1,535.000 | 675.000 |
| Total suspended solids | 172.800 | 138.200 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(n) Zirconium chip crushing west air pollution control.
| 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) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(o) Acid leachate from zirconium metal production.
| 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) | 10.900 | 4.420 |
| Cyanide (total) | 5.893 | 2.357 |
| Lead | 8.250 | 3.831 |
| Nickel | 16.210 | 10.900 |
| Ammonia (as N) | 3,928.000 | 1,674.000 |
| Total suspended solids | 442.000 | 353.600 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(p) Acid leachate from zirconium alloy production.
| 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) | 5.835 | 2.366 |
| Cyanide (total) | 3.154 | 1.262 |
| Lead | 4.416 | 2.050 |
| Nickel | 8.674 | 5.835 |
| Ammonia (as N) | 2,102.000 | 895.800 |
| Total suspended solids | 236.600 | 189.300 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(q) Leaching rinse water from zirconium metal production.
| 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) | 21.810 | 8.840 |
| Cyanide (total) | 11.790 | 4.715 |
| Lead | 16.500 | 7.661 |
| Nickel | 32.410 | 21.810 |
| Ammonia (as N) | 7,856.000 | 3,453.000 |
| Total suspended solids | 884.000 | 707.200 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(r) Leaching rinse water from zirconium alloy production.
| 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) | 0.292 | 0.118 |
| Cyanide (total) | 0.158 | 0.063 |
| Lead | 0.221 | 0.103 |
| Nickel | 0.434 | 0.292 |
| Ammonia (as N) | 105.200 | 46.240 |
| Total suspended solids | 11.840 | 9.468 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in primary zirconium and hafnium process wastewater introduced into a POTW shall not exceed the following values:
(a) Sand drying wet air pollution control.
| 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) | 0.210 | 0.085 |
| Cyanide (total) | 0.114 | 0.045 |
| Lead | 0.159 | 0.074 |
| Nickel | 0.312 | 0.210 |
| Ammonia (as N) | 75.710 | 33.280 |
(b) Sand chlorination off-gas wet air pollution control.
| 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) | 16.080 | 6.521 |
| Cyanide (total) | 8.690 | 3.478 |
| Lead | 12.170 | 5.651 |
| Nickel | 23.910 | 16.080 |
| Ammonia (as N) | 5,795.000 | 2,547.000 |
(c) Sand chlorination area vent wet air pollution control.
| 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) | 3.154 | 1.279 |
| Cyanide (total) | 1.705 | 0.682 |
| Lead | 2.387 | 1.108 |
| Nickel | 4.688 | 3.154 |
| Ammonia (as N) | 1,136.000 | 499.500 |
(d) SiCl4 purification wet air pollution control.
| 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) | 2.774 | 1.125 |
| Cyanide (total) | 1.500 | 0.600 |
| Lead | 2.099 | 0.975 |
| Nickel | 4.124 | 2.774 |
| Ammonia (as N) | 999.500 | 439.400 |
(e) Feed makeup wet air pollution control.
| 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) | 2.103 | 0.852 |
| Cyanide (total) | 1.137 | 0.455 |
| Lead | 1.591 | 0.739 |
| Nickel | 3.126 | 2.103 |
| Ammonia (as N) | 757.500 | 333.000 |
(f) Iron extraction (MIBK) steam stripper bottoms.
| 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) | 0.830 | 0.337 |
| Cyanide (total) | 0.449 | 0.180 |
| Lead | 0.628 | 0.292 |
| Nickel | 1.234 | 0.830 |
| Ammonia (as N) | 299.100 | 131.500 |
(g) Zirconium filtrate.
| 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) | 14.350 | 5.819 |
| Cyanide (total) | 7.758 | 3.103 |
| Lead | 10.860 | 5.043 |
| Nickel | 21.340 | 14.350 |
| Ammonia (as N) | 5,171.000 | 2,273.000 |
(h) Hafnium filtrate.
| 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 |
(i) Calcining caustic wet air pollution control.
| 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) | 3.329 | 1.350 |
| Cyanide (total) | 1.799 | 0.720 |
| Lead | 2.519 | 1.170 |
| Nickel | 4.948 | 3.329 |
| Ammonia (as N) | 1,199.000 | 527.200 |
(j) Pure chlorination wet air pollution control.
| 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) | 14.180 | 5.748 |
| Cyanide (total) | 7.663 | 3.065 |
| Lead | 10.730 | 4.981 |
| Nickel | 21.007 | 14.180 |
| Ammonia (as N) | 5,108.000 | 2,245,000 |
(k) Reduction area-vent wet air pollution control.
| 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) | 1.364 | 0.553 |
| Cyanide (total) | 0.737 | 0.295 |
| Lead | 1.032 | 0.479 |
| Nickel | 2.027 | 1.364 |
| Ammonia (as N) | 491.300 | 216.000 |
(l) Magnesium recovery off-gas wet air pollution control.
| 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) | 7.671 | 3.110 |
| Cyanide (total) | 4.147 | 1.659 |
| Lead | 5.805 | 2.695 |
| Nickel | 11.400 | 7.671 |
| Ammonia (as N) | 2,764.000 | 1,215.000 |
(m) Magnesium recovery area-vent wet air pollution control.
| 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) | 4.262 | 1.728 |
| Cyanide (total) | 2.304 | 0.921 |
| Lead | 3.225 | 1.497 |
| Nickel | 6.335 | 4.262 |
| Ammonia (as N) | 1,535,000 | 675.00 |
(n) Zirconium chip crushing wet air pollution control.
| 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 |
(o) Acid leachate from zirconium metal production.
| 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) | 10.900 | 4.420 |
| Cyanide (total) | 5.893 | 2.357 |
| Lead | 8.250 | 3.831 |
| Nickel | 16.210 | 10.900 |
| Ammonia (as N) | 3,928.000 | 1,674.00 |
(p) Acid leachate from zirconium alloy production.
| 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) | 5.835 | 2.366 |
| Cyanide (total) | 3.154 | 1.262 |
| Lead | 4.416 | 2.050 |
| Nickel | 8.674 | 5.835 |
| Ammonia (as N) | 2,102.000 | 895.800 |
(q) Leaching rinse water from zirconium metal production.
| 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) | 21.810 | 8.840 |
| Cyanide (total) | 11.790 | 4.715 |
| Lead | 16.500 | 7.661 |
| Nickel | 32.410 | 21.810 |
| Ammonia (as N) | 7,856.000 | 3,453.000 |
(r) Leaching rinse water from zirconium alloy production.
| 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) | 0.292 | 0.118 |
| Cyanide (total) | 0.158 | 0.063 |
| Lead | 0.221 | 0.103 |
| Nickel | 0.434 | 0.292 |
| Ammonia (as N) | 105.200 | 46.240 |