View all text of Subpart K [§ 421.110 - § 421.117]
§ 421.114 - Standards of performance for new sources.
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Subpart K—Concentrate Digestion Wet Air Pollution Control.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of concentrate digested | Lead | .174 | .081 | Zinc | .635 | .261 | Ammonia (as N) | 82.910 | 36.450 | Fluoride | 21.770 | 12.440 | Total suspended solids | 9.330 | 7.464 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(b) Subpart K—Solvent Extraction Raffinate.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of concentrate digested | Lead | 2.592 | 1.203 | Zinc | 9.442 | 3.888 | Ammonia (as N) | 1,233.000 | 542.5000 | Fluoride | 324.000 | 185.100 | Total Suspended Solids | 138.900 | 111.100 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(c) Subpart K—Solvent Extraction Wet Air Pollution Control.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of concentrate digested | Lead | .069 | .032 | Zinc | .251 | .103 | Ammonia (as N) | 32.790 | 14.420 | Fluoride | 8.610 | 4.920 | Total suspended solids | 3.690 | 2.952 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(d) Subpart K—Precipitation and Filtration.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of concentrate digested | Lead | 3.833 | 1.780 | Zinc | 13.960 | 5.750 | Ammonia (as N) | 1,825.000 | 802.200 | Fluoride | 479.100 | 273.800 | Total suspended solids | 205.400 | 164.300 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of concentrate digested | Lead | 1.778 | .826 | Zinc | 6.478 | 2.668 | Ammonia (as N) | 846.600 | 372.200 | Fluoride | 222.300 | 127.000 | Total suspended solids | 95.270 | 76.210 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(f) Subpart K—Tantalum Salt Drying.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tantalum salt dried | Lead | 16.950 | 7.871 | Zinc | 61.750 | 25.430 | Ammonia (as N) | 8,070.000 | 3,548.000 | Fluoride | 2,119.000 | 1,211.000 | Total suspended solids | 908.200 | 726.500 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(g) Subpart K—Oxides Calcining Wet Air Pollution Control.
NSPS
| 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 | 1.076 | .500 | Zinc | 3.919 | 1.614 | Ammonia (as N) | 512.200 | 225.200 | Fluoride | 134.500 | 76.840 | Total suspended solids | 57.630 | 46.110 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(h) Subpart K—Reduction of Tantalum Salt to Metal.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tantalum salt reduced | Lead | 46.500 | 21.590 | Zinc | 169.400 | 69.750 | Ammonia (as N) | 22,140.000 | 9,732.000 | Fluoride | 5,813.000 | 3,322.000 | Total suspended solids | 2,491.000 | 1,993.000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tantalum salt reduced | Lead | .572 | .266 | Zinc | 2.084 | .858 | Ammonia (as N) | 272.400 | 119.700 | Fluoride | 71.510 | 40.860 | Total suspended solids | 30.650 | 24.520 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(j) Subpart K—Tantalum Powder Wash.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tantalum powder washed | Lead | 5.721 | 2.656 | Zinc | 20.840 | 8.582 | Ammonia (as N) | 2,724.000 | 1,198.000 | Fluoride | 715.200 | 408.700 | Total suspended solids | 306.500 | 245.200 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(k) Subpart K—Consolidation and Casting Contact Cooling.
NSPS
| 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) |
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1 Within the range of 7.5 to 10.0 at all times.