Collapse to view only § 421.111 - Specialized definitions.
- § 421.110 - Applicability: Description of the primary columbium-tantalum subcategory.
- § 421.111 - Specialized definitions.
- § 421.112 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
- § 421.113 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
- § 421.114 - Standards of performance for new sources.
- § 421.115 - Pretreatment standards for existing sources.
- § 421.116 - Pretreatment standards for new sources.
- § 421.117 - [Reserved]
§ 421.110 - Applicability: Description of the primary columbium-tantalum subcategory.
The provisions of this subpart are applicable to discharges resulting from the production of columbium or tantalum by primary columbium-tantalum facilities.
§ 421.111 - Specialized definitions.
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.
§ 421.112 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
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) Subpart K—Concentrate Digestion Wet Air Pollution Control.
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.
(b) Subpart K—Solvent Extraction Raffinate.
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.
(c) Subpart K—Solvent Extraction Wet Air Pollution Control.
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.
(d) Subpart K—Precipitation and Filtration.
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.
(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.
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.
(f) Subpart K—Tantalum Salt Drying.
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.
(g) Subpart K—Oxides Calcining Wet Air Pollution Control.
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.
(h) Subpart K—Reduction of Tantalum Salt to Metal.
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.
(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.
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.
(j) Subpart K—Tantalum Powder Wash.
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.
(k) Subpart K—Consolidation and Casting Contact Cooling.
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.
§ 421.113 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
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) Subpart K—Concentrate Digestion Wet Air Pollution Control.
BAT 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 | .174 | .081 | Zinc | .635 | .261 | Ammonia (as N) | 82.910 | 36.450 | Fluoride | 21.770 | 12.440 |
|---|
(b) Subpart K—Solvent Extraction Raffinate.
BAT 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 | 2.592 | 1.203 | Zinc | 9.442 | 3.888 | Ammonia (as N) | 1,233.000 | 542.5000 | Fluoride | 324.000 | 185.100 |
|---|
(c) Subpart K—Solvent Extraction Wet Air Pollution Control.
BAT 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 | .069 | .032 | Zinc | .251 | .103 | Ammonia (as N) | 32.790 | 14.420 | Fluoride | 8.610 | 4.920 |
|---|
(d) Subpart K—Precipitation and Filtration.
BAT 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 | 3.833 | 1.780 | Zinc | 13.960 | 5.750 | Ammonia (as N) | 1,825.000 | 802.200 | Fluoride | 479.100 | 273.800 |
|---|
(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.
BAT 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 | 1.778 | .826 | Zinc | 6.478 | 2.668 | Ammonia (as N) | 846.600 | 372.200 | Fluoride | 222.300 | 127.000 |
|---|
(f) Subpart K—Tantalum Salt Drying.
BAT 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 | 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 |
|---|
(g) Subpart K—Oxides Calcining Wet Air Pollution Control.
BAT 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 | Lead | 1.076 | .500 | Zinc | 3.919 | 1.614 | Ammonia (as N) | 512.200 | 225.200 | Fluoride | 134.500 | 76.840 |
|---|
(h) Subpart K—Reduction of Tantalum Salt to Metal.
BAT 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 | 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 |
|---|
(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.
BAT 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 | .572 | .266 | Zinc | 2.084 | .858 | Fluoride | 71.510 | 40.860 |
|---|
(j) Subpart K—Tantalum Powder Wash.
BAT Effluent Limitations
| 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 |
|---|
(k) Subpart K—Consolidation and Casting Contact Cooling.
BAT 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 |
|---|
§ 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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
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) |
|---|
1 Within the range of 7.5 to 10.0 at all times.
§ 421.115 - Pretreatment standards for existing sources.
Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources. The mass of wastewater pollutants in primary columbium-tantalum process wastewater introduced into a POTW shall not exceed the following values:
(a) Subpart K—Concentrate Digestion Wet Air Pollution Control.
PSES
| 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 |
|---|
(b) Subpart K—Solvent Extraction Raffinate.
PSES
| 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 |
|---|
(c) Subpart K—Solvent Extraction Wet Air Pollution Control.
PSES
| 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 |
|---|
(d) Subpart K—Precipitation and Filtration.
PSES
| 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 |
|---|
(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.
PSES
| 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 |
|---|
(f) Subpart K—Tantalum Salt Drying.
PSES
| 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 |
|---|
(g) Subpart K—Oxides Calcining Wet Air Pollution Control.
PSES
| 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 |
|---|
(h) Subpart K—Reduction of Tantalum Salt to Metal.
PSES
| 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 |
|---|
(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.
PSES
| 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 |
|---|
(j) Subpart K—Tantalum Powder Wash.
PSES
| 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 |
|---|
(k) Subpart K—Consolidation and Casting Contact Cooling.
PSNS
| 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 |
|---|
§ 421.116 - Pretreatment standards for new sources.
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 columbium-tantalum process wastewater introduced into a POTW shall not exceed the following values:
(a) Subpart K—Concentrate Digestion Wet Air Pollution Control.
PSNS
| 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 |
|---|
(b) Subpart K—Solvent Extraction Raffinate.
PSNS
| 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 |
|---|
(c) Subpart K—Solvent Extraction Wet Air Pollution Control.
PSNS
| 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 |
|---|
(d) Subpart K—Precipitation and Filtration.
PSNS
| 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 |
|---|
(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.
PSNS
| 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 |
|---|
(f) Subpart K—Tantalum Salt Drying.
PSNS
| 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 |
|---|
(g) Subpart K—Oxides Calcining Wet Air Pollution Control.
PSNS
| 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 |
|---|
(h) Subpart K—Reduction of Tantalum Salt to Metal.
PSNS
| 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 |
|---|
(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.
PSNS
| 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 |
|---|
(j) Subpart K—Tantalum Powder Wash.
PSNS
| 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 |
|---|
(k) Subpart K—Consolidation and Casting Contact Cooling.
PSNS
| 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 |
|---|