Regulations last checked for updates: Nov 23, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024
All TitlesTitle 40Chapter IPart 421Subpart J - Subpart J—Primary Tungsten Subcategory
Collapse to view only § 421.105 - Pretreatment standards for existing sources.
Table of Contents

§ 421.100 - Applicability: Description of the primary tungsten subcategory.

§ 421.101 - Specialized definitions.

§ 421.102 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

§ 421.103 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

§ 421.104 - Standards of performance for new sources.

§ 421.105 - Pretreatment standards for existing sources.

§ 421.106 - Pretreatment standards for new sources.

§ 421.107 - [Reserved]

§ 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
Lead17.2308.205
Zinc59.90025.030
Ammonia (as N)5,469.0002,404.00
Total suspended solids1,682.000800.000
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
Lead15.0407.162
Zinc52.28021.840
Ammonia (as N)4,773.0002,098.000
Total suspended solids1,468.000698.300
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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000
Total suspended solids0.0000.000
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
Lead8.0573.837
Zinc28.01111.700
Ammonia (as N)2,557.0001,124.000
Total suspended solids786.200374.100
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
Lead37.16017.700
Zinc129.20053.970
Ammonia (as N)11,790.0005,185.000
Total Suspended solids3,627.0001,726.000
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
Lead37.16017.700
Zinc129.20053.970
Ammonia (as N) ( 2)11,790.0005,185.000
Total suspended solids3,627.0001,726.000
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
Lead31.00014.760
Zinc107.80045.020
Ammonia (as N)9,838.0004,325.000
Total suspended solids3,026.0001,439.000
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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000
Total suspended solids0.0000.000
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
Lead11.6005.523
Zinc40.32016.850
Ammonia (as N)3,681.0001,618.000
Total suspended solids1,132.000538.500
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
Lead0.0260.013
Zinc0.0920.038
Ammonia (as N)8.3983.692
Total suspended solids2.5831.229
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
Lead12.9406.161
Zinc44.97018.790
Ammonia (as N)4,106.0001,805.000
Total suspended solids1,263.000600.700
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)65.19028.660
Total suspended solids20.0509.536
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
Lead1.0080.48
Zinc3.5041.464
Ammonia (as N)319.900140.700
Total suspended solids98.40046.800
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
Lead11.4905.333
Zinc41.85017.230
Ammonia (as N)5,469.0002,404.000

(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
Lead1.0030.466
Zinc3.6531.504
Ammonia (as N)477.400209.900

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000

(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
Lead5.3722.494
Zinc19.5708.057
Ammonia (as N)2,557.0001,124.000

(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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N)11,790.0005,185.000

(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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N) 111,790.0005,185.000

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
Lead20.6709.594
Zinc75.28031.000
Ammonia (as N)9,838.0004,325.000

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000

(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
Lead0.7730.359
Zinc2.8171.160
Ammonia (as N)368.200161.900

(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
Lead0.0180.008
Zinc0.0640.026
Ammonia (as N)8.3983.692

(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
Lead0.8620.400
Zinc3.1421.294
Ammonia (as N)410.600180.500

(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
Lead0.1370.064
Zinc0.4990.205
Ammonia (as N)65.19028.660

(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
Lead0.6720.312
Zinc2.4481.008
Ammonia (as N)319.900140.700

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000
[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
Lead11.4905.333
Zinc41.85017.230
Ammonia (as N)5,469.0002,404.000
Total suspended solids615.400492.300
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
Lead1.0030.466
Zinc3.6531.504
Ammonia (as N)477.400209.900
Total suspended solids53.72042.970
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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000
Total suspended solids0.0000.000
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
Lead5.3722.494
Zinc19.5708.057
Ammonia (as N)2,557.0001,124.000
Total suspended solids287.800229.600
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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N)11,790.0005,185.000
Total suspended solids1,327.0001,062.000
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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N) ( 2)11,790.0005,185.000
Total suspended solids1,327.0001,062.000
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
Lead20.6709.594
Zinc75.28031.000
Ammonia (as N)9,838.0004,325.000
Total suspended solids1,107.000885.600
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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000
Total suspended solids0.0000.000
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
Lead0.7730.359
Zinc2.8171.160
Ammonia (as N)368.200161.900
Total suspended solids41.43033.150
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
Lead0.0180.008
Zinc0.0640.026
Ammonia (as N)8.3983.692
Total suspended solids0.9450.756
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
Zinc3.1421.294
Ammonia (as N)410.600180.500
Total suspended solids46.20036.960
pH( 1)( 1)

1Within 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)65.19028.660
Total suspended solids7.3355.868
pH( 1)( 1)

1Within 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
Zinc2.4481.008
Ammonia (as N)319.900140.700
Total suspended solids36.00028.800
pH( 1)( 1)

1Within 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)

1Within 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
Lead11.4905.333
Zinc41.85017.230
Ammonia (as N)5,469.0002,404.000

(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
Lead1.0030.466
Zinc3.6531.504
Ammonia (as N)477.400209.900

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000

(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
Lead5.3722.494
Zinc19.5708.057
Ammonia (as N)2,557.0001,124.000

(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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N)11,790.0005,185.000

(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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N) 111,790.0005,185.000

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
Lead20.6709.594
Zinc75.28031.000
Ammonia (as N)9,838.0004,325.000

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000

(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
Lead0.7730.359
Zinc2.8171.160
Ammonia (as N)368.200161.900

(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
Lead0.0180.008
Zinc0.0640.026
Ammonia (as N)8.3983.692

(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
Zinc3.1421.294
Ammonia (as N)410.600180.500

(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)65.19028.660

(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
Zinc2.4481.008
Ammonia (as N)319.900140.700

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000
[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
Lead11.4905.333
Zinc41.85017.230
Ammonia (as N)5,469.0002,404.000

(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
Lead1.0030.466
Zinc3.6531.504
Ammonia (as N)477.400209.900

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000

(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
Lead5.3722.494
Zinc19.5708.057
Ammonia (as N)2,557.0001,124.000

(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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N)11,790.0005,185.000

(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
Lead24.78011.500
Zinc90.24037.160
Ammonia (as N)( 1)11,790.0005,185.000

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
Lead20.6709.594
Zinc75.28031.000
Ammonia (as N)9,838.0004,325.000

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000

(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
Lead0.7730.359
Zinc2.8171.160
Ammonia (as N)368.200161.900

(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
Lead0.0180.008
Zinc0.0640.026
Ammonia (as N)8.3983.692

(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
Zinc3.1421.294
Ammonia (as N)410.600180.500

(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)65.19028.660

(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
Zinc2.4481.008
Ammonia (as N)319.900140.700

(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
Lead0.0000.000
Zinc0.0000.000
Ammonia (as N)0.0000.000
[49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1712, Jan. 21, 1988]
§ 421.107 - [Reserved]
authority: 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,c,e,and, 1316 (b) andc, 1317 (b) andc,1318; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4
source: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.
cite as: 40 CFR 421.105
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