Site Feedback

Title 40

Displaying title 40, up to date as of 10/07/2026. Title 40 was last amended 10/02/2026.
New Finding Aids are now available on eCFR.gov. The Parallel Table of Authorities, Subject Index, and Agency-prepared Indexes are now online! Learn more
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

Subpart J—Primary Tungsten Subcategory

§ 421.100 Applicability: Description of the primary tungsten subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of tungsten at primary tungsten facilities.

[49 FR 8812, Mar. 8, 1984]

§ 421.101 Specialized definitions.

For the purpose of this subpart the general information, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

[49 FR 8812, Mar. 8, 1984]

§ 421.102 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 J—Tungstic Acid Rinse.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead 17.230 8.205
Zinc 59.900 25.030
Ammonia (as N) 5,469.000 2,404.00
Total suspended solids 1,682.000 800.000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(b) Subpart J—Acid Leach 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 tungstic acid (as W) produced
Lead 15.040 7.162
Zinc 52.280 21.840
Ammonia (as N) 4,773.000 2,098.000
Total suspended solids 1,468.000 698.300
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(c) Subpart J—Alkali Leach Wash.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead 0.000 0.000
Zinc 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 7.0 to 10.0 at all times.

(d) Subpart J—Alkali Leach Wash Condensate.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead 8.057 3.837
Zinc 28.011 11.700
Ammonia (as N) 2,557.000 1,124.000
Total suspended solids 786.200 374.100
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead 37.160 17.700
Zinc 129.200 53.970
Ammonia (as N) 11,790.000 5,185.000
Total Suspended solids 3,627.000 1,726.000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead 37.160 17.700
Zinc 129.200 53.970
Ammonia (as N) (2) 11,790.000 5,185.000
Total suspended solids 3,627.000 1,726.000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.
2 The effluent limitation guideline for this pollutant does not apply if (a) the mother liquor feed to the ion exchange process or the raffinate from the ion exchange process contains sulfates at concentrations exceeding 1000 mg/l; (b) this mother liquor or raffinate is treated by ammonia steam stripping; and (c) such mother liquor or raffinate is not commingled with any other process or nonprocess waters prior to steam stripping for ammonia removal.

(g) Subpart J—Calcium Tungstate Precipitate Wash.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of calcium tungstate (as W) produced
Lead 31.000 14.760
Zinc 107.800 45.020
Ammonia (as N) 9,838.000 4,325.000
Total suspended solids 3,026.000 1,439.000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium paratungstate (as W) produced
Lead 0.000 0.000
Zinc 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 7.0 to 10.0 at all times.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides 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 tungstic oxide (as W) produced
Lead 11.600 5.523
Zinc 40.320 16.850
Ammonia (as N) 3,681.000 1,618.000
Total suspended solids 1,132.000 538.500
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic oxide (as W) produced
Lead 0.026 0.013
Zinc 0.092 0.038
Ammonia (as N) 8.398 3.692
Total suspended solids 2.583 1.229
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(k) Subpart J—Reduction to Tungsten 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 tungsten metal produced
Lead 12.940 6.161
Zinc 44.970 18.790
Ammonia (as N) 4,106.000 1,805.000
Total suspended solids 1,263.000 600.700
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(l) Subpart J—Reduction to Tungsten Water of Formation.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungsten metal produced
Lead .205 .098
Zinc .714 .298
Ammonia (as N) 65.190 28.660
Total suspended solids 20.050 9.536
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungsten metal produced
Lead 1.008 0.48
Zinc 3.504 1.464
Ammonia (as N) 319.900 140.700
Total suspended solids 98.400 46.800
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(n) Subpart J—Molybdenum Sulfide Precipitation 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 tungsten metal produced
Lead .000 .000
Zinc .000 .000
Ammonia (as N) .000 .000
Total suspended solids .000 .000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

[49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1706, Jan. 21, 1988]

§ 421.103 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 J—Tungstic Acid Rinse.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead 11.490 5.333
Zinc 41.850 17.230
Ammonia (as N) 5,469.000 2,404.000

(b) Subpart J—Acid Leach 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 tungstic acid (as W) produced
Lead 1.003 0.466
Zinc 3.653 1.504
Ammonia (as N) 477.400 209.900

(c) Subpart J—Alkali Leach Wash.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

(d) Subpart J—Alkali Leach Wash Condensate.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead 5.372 2.494
Zinc 19.570 8.057
Ammonia (as N) 2,557.000 1,124.000

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N) 11,790.000 5,185.000

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N) 1 11,790.000 5,185.000
1 The effluent limitation for this pollutant does not apply if a) the motor liquor feed to the ion exchange process or the raffinate from the ion exchange process contains sulfates at concentrations exceeding 1000 mg/1; b) this mother liquor or raffinate is treated by ammonia steam stripping; and c) such mother liquor or raffinate is not commingled with any other process or nonprocess waters prior to steam stripping for ammonia removal.

(g) Subpart J—Calcium Tungstate Precipitate Wash.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per/million pounds) of calcium tungstate (as W) produced
Lead 20.670 9.594
Zinc 75.280 31.000
Ammonia (as N) 9,838.000 4,325.000

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per/million pounds) of ammonium paratungstate (as W) produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per/million pounds) of tungstic oxide (as W) produced
Lead 0.773 0.359
Zinc 2.817 1.160
Ammonia (as N) 368.200 161.900

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per/million pounds) of tungstic oxide (as W) produced
Lead 0.018 0.008
Zinc 0.064 0.026
Ammonia (as N) 8.398 3.692

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per/million pounds) of tungsten metal produced
Lead 0.862 0.400
Zinc 3.142 1.294
Ammonia (as N) 410.600 180.500

(l) Subpart J—Reduction to Tungsten Water of Formation.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per/million pounds) of tungsten metal produced
Lead 0.137 0.064
Zinc 0.499 0.205
Ammonia (as N) 65.190 28.660

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungsten metal produced
Lead 0.672 0.312
Zinc 2.448 1.008
Ammonia (as N) 319.900 140.700

(n) Subpart J—Molybdenum Sulfide Precipitation 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 tungsten metal produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

[49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1708, Jan. 21, 1988]

§ 421.104 Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Subpart J—Tungstic Acid Rinse.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead 11.490 5.333
Zinc 41.850 17.230
Ammonia (as N) 5,469.000 2,404.000
Total suspended solids 615.400 492.300
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(b) Subpart J—Acid Leach Wet Air Pollution

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead 1.003 0.466
Zinc 3.653 1.504
Ammonia (as N) 477.400 209.900
Total suspended solids 53.720 42.970
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(c) Subpart J—Alkali Leach Wash.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead 0.000 0.000
Zinc 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 7.0 to 10.0 at all times.

(d) Subpart J—Alkali Leach Wash Condensate.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead 5.372 2.494
Zinc 19.570 8.057
Ammonia (as N) 2,557.000 1,124.000
Total suspended solids 287.800 229.600
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N) 11,790.000 5,185.000
Total suspended solids 1,327.000 1,062.000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N) (2) 11,790.000 5,185.000
Total suspended solids 1,327.000 1,062.000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.
2 The new source standard for this pollutant does not apply if (a) the mother liquor feed to the ion exchange process or the raffinate from the ion exchange process contains sulfates at concentrations exceeding 1000 mg/l; (b) this mother liquor or raffinate is treated by ammonia steam stripping; and (c) such mother liquor or raffinate is not commingled with any other process or nonprocess waters prior to steam stripping for ammonia removal.

(g) Subpart J—Calcium Tungstate Precipitate Wash.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of calcium tungstate (as W) produced
Lead 20.670 9.594
Zinc 75.280 31.000
Ammonia (as N) 9,838.000 4,325.000
Total suspended solids 1,107.000 885.600
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium paratungstate (as W) produced
Lead 0.000 0.000
Zinc 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 7.0 to 10.0 at all times.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pound per million pounds) of tungstic oxide (as W) produced
Lead 0.773 0.359
Zinc 2.817 1.160
Ammonia (as N) 368.200 161.900
Total suspended solids 41.430 33.150
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic oxide (as W) produced
Lead 0.018 0.008
Zinc 0.064 0.026
Ammonia (as N) 8.398 3.692
Total suspended solids 0.945 0.756
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(k) Subpart J—Reduction to Tungsten 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 tungsten metal produced
Lead .862 .400
Zinc 3.142 1.294
Ammonia (as N) 410.600 180.500
Total suspended solids 46.200 36.960
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(l) Subpart J—Reduction to Tungsten Water of Formation.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungsten metal produced
Lead .137 .064
Zinc .499 .205
Ammonia (as N) 65.190 28.660
Total suspended solids 7.335 5.868
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(m) Subpart J—Tungsten Power Acid Leach and Wash.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungsten metal produced
Lead .672 .312
Zinc 2.448 1.008
Ammonia (as N) 319.900 140.700
Total suspended solids 36.000 28.800
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

(n) Subpart J—Molybdenum Sulfide Precipitation 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 tungsten metal produced
Lead .00 .000
Zinc .000 .000
Ammonia (as N) .000 .000
Total suspended solids .000 .000
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.

[49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1709, Jan. 21, 1988]

§ 421.105 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 tungsten process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart J—Tungstic Acid Rinse.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead 11.490 5.333
Zinc 41.850 17.230
Ammonia (as N) 5,469.000 2,404.000

(b) Subpart J—Acid Leach 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 tungstic acid (as W) produced
Lead 1.003 0.466
Zinc 3.653 1.504
Ammonia (as N) 477.400 209.900

(c) Subpart J—Alkali Leach Wash.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstate (as W) produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

(d) Subpart J—Alkali Leach Wash Condensate.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead 5.372 2.494
Zinc 19.570 8.057
Ammonia (as N) 2,557.000 1,124.000

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N) 11,790.000 5,185.000

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N) 1 11,790.000 5,185.000
1 The pretreatment standard for this pollutant does not apply if (a) the mother liquor feed to the ion exchange process or the raffinate from the ion exchange process contains sulfates at concentrations exceeding 1000 mg/l; (b) this mother liquor or raffinate is treated by ammonia steam stripping; and (c) such mother liquor or raffinate is not commingled with any other process or nonprocess waters prior to steam stripping for ammonia removal.

(g) Subpart J—Calcium Tungstate Precipitate Wash.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of calcium tungstate (as W) produced
Lead 20.670 9.594
Zinc 75.280 31.000
Ammonia (as N) 9,838.000 4,325.000

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of ammonium paratungstate (as W) produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides 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 tungstic oxide (as W) produced
Lead 0.773 0.359
Zinc 2.817 1.160
Ammonia (as N) 368.200 161.900

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic oxide (as W) produced
Lead 0.018 0.008
Zinc 0.064 0.026
Ammonia (as N) 8.398 3.692

(k) Subpart J—Reduction to Tungsten 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 tungsten metal produced
Lead .862 .400
Zinc 3.142 1.294
Ammonia (as N) 410.600 180.500

(l) Subpart J—Reduction to Tungsten Water of Formation.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungsten metal produced
Lead .137 .064
Zinc .499 .205
Ammonia (as N) 65.190 28.660

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungsten metal produced
Lead .672 .312
Zinc 2.448 1.008
Ammonia (as N) 319.900 140.700

(n) Subpart J—Molybdenum Sulfide Precipitation 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 tungsten metal produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

[49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1711, Jan. 21, 1988]

§ 421.106 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 tungsten process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart J—Tungstic Acid Rinse.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead 11.490 5.333
Zinc 41.850 17.230
Ammonia (as N) 5,469.000 2,404.000

(b) Subpart J—Acid Leach Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of tungstic acid (as W) produced
Lead 1.003 0.466
Zinc 3.653 1.504
Ammonia (as N) 477.400 209.900

(c) Subpart J—Alkali Leach Wash.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of sodium tungstate (as W) produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

(d) Subpart J—Alkali Leach Wash Condensate.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of sodium tungstate (as W) produced
Lead 5.372 2.494
Zinc 19.570 8.057
Ammonia (as N) 2,557.000 1,124.000

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of ammonium tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N) 11,790.000 5,185.000

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of ammonium tungstate (as W) produced
Lead 24.780 11.500
Zinc 90.240 37.160
Ammonia (as N)(1) 11,790.000 5,185.000
1 The pretreatment standard for this pollutant does not apply if a) the mother liquor feed to the ion exchange process or the raffinate from the ion exchange process contains sulfates at concentrations exceeding 1000 mg/l; b) this mother liquor or raffinate is treated by ammonia steam stripping; and c) such mother liquor or raffinate is not commingled with any other process or nonprocess waters prior to steam stripping for ammonia removal.

(g) Subpart J—Calcium Tungstate Precipitate Wash.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of calcium tungstate (as W) produced
Lead 20.670 9.594
Zinc 75.280 31.000
Ammonia (as N) 9,838.000 4,325.000

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of ammonium paratungstate (as W) produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of tungstic oxide (as W) produced
Lead 0.773 0.359
Zinc 2.817 1.160
Ammonia (as N) 368.200 161.900

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of tungstic oxide (as W) produced
Lead 0.018 0.008
Zinc 0.064 0.026
Ammonia (as N) 8.398 3.692

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (pounds per million) of tungsten metal produced
Lead .862 .400
Zinc 3.142 1.294
Ammonia (as N) 410.600 180.500

(l) Subpart J—Reduction to Tungsten Water of Formation.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (lb/ million lbs) of tungsten metal produced
Lead .137 .064
Zinc .499 .205
Ammonia (as N) 65.190 28.660

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (parts per million) of tungsten metal produced
Lead .672 .312
Zinc 2.448 1.008
Ammonia (as N) 319.900 140.700

(n) Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average
mg/kg (parts per million) of tungsten metal produced
Lead 0.000 0.000
Zinc 0.000 0.000
Ammonia (as N) 0.000 0.000

[49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1712, Jan. 21, 1988]

§ 421.107 [Reserved]