View all text of Subpart AE [§ 421.330 - § 421.337]
§ 421.334 - Standards of performance for new sources.
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Sand drying wet air pollution control.
NSPS 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) | 0.210 | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(b) Sand chlorination off-gas wet air pollution control.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(c) Sand chlorination area-vent wet air pollution control.
NSPS 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) | 3.154 | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(d) SiC
NSPS 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) | 2.774 | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(e) Feed makeup wet air pollution control.
NSPS 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) | 2.103 | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(f) Iron extraction (MIBK) steam stripper bottoms.
NSPS 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) | 0.830 | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(g) Zirconium filtrate.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(h) Hafnium filtrate.
NSPS 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(i) Calcining caustic wet air pollution control.
NSPS 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) | 3.329 | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(j) Pure chlorination wet air pollution control.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(k) Reduction area-vent wet air pollution control.
NSPS 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) | 1.364 | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(l) Magnesium recovery off-gas wet air pollution control.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(m) Magnesium recovery area-vent wet air pollution control.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(n) Zirconium chip crushing west air pollution control.
NSPS 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(o) Acid leachate from zirconium metal production.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(p) Acid leachate from zirconium alloy production.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(q) Leaching rinse water from zirconium metal production.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.
(r) Leaching rinse water from zirconium alloy production.
NSPS 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) | 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) |
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1 Within the range of 7.5 to 10.0 at all times.