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Electronic Code of Federal Regulations

e-CFR data is current as of December 5, 2019

Title 40Chapter ISubchapter NPart 461 → Subpart G


Title 40: Protection of Environment
PART 461—BATTERY MANUFACTURING POINT SOURCE CATEGORY


Subpart G—Zinc Subcategory


Contents
§461.70   Applicability; description of the zinc subcategory.
§461.71   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
§461.72   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
§461.73   New source performance standards. (NSPS).
§461.74   Pretreatment standards for existing sources (PSES).
§461.75   Pretreatment standards for new sources (PSNS).

§461.70   Applicability; description of the zinc subcategory.

This subpart applies to discharges to waters of the United States, and introductions of pollutants into publicly owned treatment works from the manufacturing of zinc anode batteries.

§461.71   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available:

(1) Subpart G—Wet Amalgamated Powder Anodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium1.670.68
Mercury0.950.38
Silver1.560.65
Zinc5.552.32
Manganese2.581.10
Oil and grease76.045.6
TSS155.874.1
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(2) Subpart G—Gelled Amalgam Anodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium0.300.12
Mercury0.170.07
Silver0.280.12
Zinc0.990.42
Manganese0.460.20
Oil and grease13.68.16
TSS27.913.26
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(3) Subpart G—Zinc Oxide, Formed Anodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium62.925.7
Mercury35.814.3
Silver58.724.3
Zinc208.887.2
Manganese97.241.5
Oil and grease2,860.01,716.0
TSS5,863.02,789.0
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(4) Subpart G—Electrodeposited Anodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc deposited
  English units—pounds per 1,000,000 pounds of zinc deposited
Chromium1,404.0574.0
Mercury798.0319.0
Silver1,308.0543.0
Zinc4,657.01,946.0
Manganese2,169.0925.0
Oil and grease63,800.038,280.0
TSS130,700.062,210.0
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(5) Subpart G—Silver Powder, Formed Cathodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium86.235.3
Mercury49.019.6
Silver80.433.3
Zinc286.2119.6
Manganese133.356.8
Oil and grease3,920.02,350.0
TSS8,036.03,822.0
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(6) Subpart G—Silver Oxide Powder, Formed Cathodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium57.723.6
Mercury32.813.1
Silver53.722.3
Zinc191.379.9
Manganese89.138.0
Oil and grease2,620.01,570.0
TSS5,370.02,554.0
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(7) Subpart G—Silver Peroxide Cathodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium13.85.65
Mercury7.853.14
Silver12.95.34
Zinc45.819.2
Manganese21.49.11
Oil and grease628.0377.0
TSS1,287.0612.0
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(8) Subpart G—Nickel Impregnated Cathodes.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of nickel applied
  English units—pounds per 1,000,000 pounds of nickel applied
Chromium721.6295.2
Mercury410.0164.0
Nickel3,149.02,083.0
Silver672.4279.0
Zinc2,394.41,000.4
Manganese1,115.2475.6
Oil and grease32,800.019,680.0
TSS67,240.031,980.0
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(9) Subpart G—Miscellaneous Wastewater Streams.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of cells produced
  English units—pounds per 1,000,000 pounds of cells produced
Chromium3.851.58
Cyanide2.541.05
Mercury2.190.88
Nickel16.8211.12
Silver3.591.49
Zinc12.795.34
Manganese5.962.54
Oil and grease175.20105.12
TSS359.16170.82
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(10) Subpart G—Silver Etch.

BPT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver processed
  English units—pounds per 1,000,000 pounds of silver processed
Chromium21.68.84
Mercury12.34.91
Silver20.28.35
Zinc71.730.0
Manganese33.414.3
Oil and grease982.0589.2
TSS2,013.1957.5
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(11) Subpart G—Silver Peroxide Production.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of silver peroxide processed
  English units—pounds per 1,000,000 pounds of silver peroxide processed
Chromium23.09.40
Mercury13.15.22
Silver21.48.88
Zinc76.231.80
Manganese35.515.10
Oil and grease1,044.0627.00
TSS2,140.01,018.00
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(12) Subpart G—Silver Powder Production.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of silver powder processed
  English units—pounds per 1,000,000 pounds of silver powder processed
Chromium9.333.82
Mercury5.302.12
Silver8.693.61
Zinc30.9512.93
Manganese14.426.15
Oil and grease424.0254.40
TSS869.0413.40
pH(1)(1)

1Within the range of 7.5-10.0 at all times.

(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.

[49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]

§461.72   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

(1) Subpart G—Wet Amalgamated Powder Anodes.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium0.240.099
Mercury0.140.055
Silver0.230.093
Zinc0.800.34
Manganese0.370.16

(2) Subpart G—Gelled Amalgam Anodes.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium0.0300.012
Mercury0.0170.007
Silver0.0280.012
Zinc0.0990.042
Manganese0.0460.020

(3) Subpart G—Zinc Oxide Formed Anodes.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of Zinc
  English units—pounds per 1,000,000 pounds of Zinc
Chromium9.533.90
Mercury5.422.17
Silver8.893.68
Zinc31.6413.22
Manganese14.746.28

(4) Subpart G—Electrodeposited Anodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc deposited
  English units—pounds per 1,000,000 pounds of zinc deposited
Chromium94.4738.65
Mercury53.6821.47
Silver88.0336.50
Zinc313.46130.97
Manganese146.0062.26

(5) Subpart G—Silver Powder Formed Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium13.075.35
Mercury7.432.97
Silver12.185.05
Zinc43.3618.12
Manganese20.208.61

(6) Subpart G—Silver Oxide Powder Formed Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium8.733.57
Mercury4.961.99
Silver8.143.37
Zinc28.9812.11
Manganese13.505.76

(7) Subpart G—Silver Peroxide Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium2.090.87
Mercury1.190.48
Silver1.950.81
Zinc6.952.90
Manganese3.241.38

(8) Subpart G—Nickel Impregnated Cathodes.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of nickel applied
  English units—pounds per 1,000,000 pounds of nickel applied
Chromium88.036.0
Mercury50.020.0
Nickel384.0254.0
Silver82.034.0
Zinc292.0122.0
Manganese136.058.0

(9) Subpart G—Miscellaneous Wastewater Streams.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of cells produced
  English units—pounds per 1,000,000 pounds of cells produced
Chromium0.570.23
Cyanide0.380.16
Mercury0.320.13
Nickel2.481.64
Silver0.530.22
Zinc1.880.79
Manganese0.880.37

(10) Subpart G—Silver Etch.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver processed
  English units—pounds per 1,000,000 pounds of silver processed
Chromium3.271.34
Mercury1.860.74
Silver3.051.26
Zinc10.864.54
Manganese5.062.16

(11) Subpart G—Silver Peroxide Production.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver peroxide produced
  English units—pounds per 1,000,000 pounds of silver peroxide produced
Chromium3.481.42
Mercury1.980.79
Silver3.241.34
Zinc11.554.83
Manganese5.382.29

(12) Subpart G—Silver Powder Production.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver powder produced
  English units—pounds per 1,000,000 pounds of silver powder produced
Chromium1.410.58
Mercury0.800.32
Silver1.320.55
Zinc4.691.96
Manganese2.180.93

(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.

[49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]

§461.73   New source performance standards. (NSPS).

(a) The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below:

(1) Subpart G—Zinc Oxide Formed Anodes—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc
  English units—pounds per 1,000,000 pounds of zinc
Chromium4.551.97
Mercury2.821.19
Silver4.551.97
Zinc0.870.39
Manganese6.504.98
Oil and grease216.7216.7
TSS325.0260.0
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(2) Subpart G—Electrodeposited Anodes—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc deposited
  English units—pounds per 1,000,000 pounds of zinc deposited
Chromium45.0919.54
Mercury27.9111.81
Silver45.0919.54
Zinc8.593.86
Manganese64.4149.38
Oil and grease2,147.002,147.00
TSS3,220.502,576.40
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(3) Subpart G—Silver Powder Formed Cathodes—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium6.242.70
Mercury3.861.63
Silver6.242.70
Zinc1.190.53
Manganese8.916.83
Oil and grease297.00297.00
TSS445.5  356.40
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(4) Subpart G—Silver Oxide Powder Formed Cathodes—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium4.171.81
Mercury2.581.09
Silver4.171.81
Zinc0.790.36
Manganese5.964.57
Oil and grease198.5198.5
TSS297.8238.2
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(5) Subpart G—Silver Peroxide Cathodes—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium1.000.43
Mercury0.620.26
Silver1.000.43
Zinc0.190.09
Manganese1.431.09
Oil and grease47.647.6
TSS71.457.1
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(6) Subpart G—Nickel Impregnated Cathodes—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of nickel applied
  English units—pounds per 1,000,000 pounds of nickel applied
Chromium42.018.2
Mercury26.011.0
Nickel42.018.2
Silver42.018.2
Zinc8.03.6
Manganese60.046.0
Oil and grease2,000.02,000.0
TSS3,000.02,400.00
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(7) Subpart G—Miscellaneous Wastewater Streams—NSPS.

Pollutant or pollutant propertyMaximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of cells produced
  English units—pounds per 1,000,000 pounds of cells produced
Chromium0.270.12
Cyanide0.0390.016
Mercury0.170.07
Nickel0.270.12
Silver0.270.12
Zinc0.050.02
Manganese0.390.30
Oil and grease12.9012.90
TSS19.3515.48
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(8) Subpart G—Silver Etch—NSPS.

Pollutant or pollutant propertyMaximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of silver processed
  English units—pounds per 1,000,000 pounds of silver processed
Chromium1.560.68
Mercury0.970.41
Silver1.560.68
Zinc0.300.13
Manganese2.231.71
Oil and grease74.4074.40
TSS111.6089.28
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(9) Subpart G—Silver Peroxide Production—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver peroxide produced
  English units—pounds per 1,000,000 pounds of silver peroxide produced
Chromium1.660.72
Mercury1.030.44
Silver1.660.72
Zinc0.320.14
Manganese2.371.82
Oil and grease79.1079.10
TSS118.6594.92
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(10) Subpart G—Silver Powder Production—NSPS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver powder produced
  English units—pounds per 1,000,000 pounds of silver powder produced
Chromium0.670.29
Mercury0.420.18
Silver0.670.29
Zinc0.130.06
Manganese0.960.74
Oil and grease32.1032.10
TSS48.1538.52
pH(1)(1)

1Within the limits of 7.5-10.0 at all times.

(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.

§461.74   Pretreatment standards for existing sources (PSES).

(a) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources:

(1) Subpart G—Wet Amalgamated Powder Anode—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc
  English units—pounds per 1,000,000 pounds of zinc
Chromium0.240.099
Mercury0.140.055
Silver0.230.093
Zinc0.800.34
Manganese0.370.16

(2) Subpart G—Gelled Amalgam Anodes—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc
  English units—pounds per 1,000,000 pounds of zinc
Chromium0.0300.12
Mercury0.0170.006
Silver0.0280.012
Zinc0.0990.042
Manganese0.0460.020

(3) Subpart G—Zinc Oxide Formed Anodes—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc
  English units—pounds per 1,000,000 pounds of zinc
Chromium9.533.90
Mercury5.422.17
Silver8.893.68
Zinc31.6413.22
Manganese14.746.28

(4) Subpart G—Electrodeposited Anodes—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc deposited
  English units—pounds per 1,000,000 pounds of zinc deposited
Chromium94.4738.65
Mercury53.6821.47
Silver88.0336.50
Zinc313.46130.97
Manganese146.0062.26

(5) Subpart G—Silver Powder Formed Cathodes—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium13.075.35
Mercury7.432.97
Silver12.185.05
Zinc43.3618.12
Maganese20.208.61

(6) Subpart G—Silver Oxide Powder Formed Cathodes—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium8.733.57
Mercury4.961.99
Silver8.143.37
Zinc28.9812.11
Manganese13.505.76

(7) Subpart G—Silver Peroxide Cathodes—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium2.090.87
Mercury1.190.48
Silver1.950.81
Zinc6.952.90
Manganese3.241.38

(8) Subpart G—Nickel Impregnated Cathodes—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of nickel applied
  English units—pounds per 1,000,000 pounds of nickel applied
Chromium88.036.0
Mercury50.020.0
Nickel384.0254.0
Silver82.034.0
Zinc292.0122.0
Manganese136.058.0

(9) Subpart G—Miscellaneous Wastewater Streams—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of cells produced
  English units—pounds per 1,000,000 pounds of cells produced
Chromium0.570.23
Cyanide0.380.16
Mercury0.320.13
Nickel2.481.64
Silver0.530.22
Zinc1.880.79
Manganese0.880.37

(10) Subpart G—Silver Etch—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver processed
  English units—pounds per 1,000,000 pounds of silver processed
Chromium3.271.34
Mercury1.860.74
Silver3.051.26
Zinc10.864.54
Manganese5.062.16

(11) Subpart G—Silver Peroxide Production—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver peroxide produced
  English units—pounds per 1,000,000 pounds of silver peroxide produced
Chromium3.481.42
Mercury1.980.79
Silver3.241.34
Zinc11.554.83
Manganese5.382.29

(12) Subpart G—Silver Powder Production—PSES.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver powder produced
  English units—pounds per 1,000,000 pounds of silver powder produced
Chromium1.410.58
Mercury0.800.32
Silver1.320.55
Zinc4.691.96
Manganese2.180.93

(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.

§461.75   Pretreatment standards for new sources (PSNS).

(a) Except as provided in §403.7 any new source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources listed below:

(1) Subpart G—Zinc Oxide Formed Anodes—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc
  English units—pounds per 1,000,000 pounds of zinc
Chromium4.551.97
Mercury2.821.19
Silver4.551.97
Zinc0.870.39
Manganese6.504.98

(2) Subpart G—Electrodeposited Anodes—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of zinc deposited
  English units—pounds per 1,000,000 pounds of zinc deposited
Chromium45.0919.54
Mercury27.9111.81
Silver45.0919.54
Zinc8.593.86
Manganese64.4149.38

(3) Subpart G—Silver Powder Formed Cathodes—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium6.242.70
Mercury3.861.63
Silver6.242.70
Zinc1.190.53
Manganese8.916.83

(4) Subpart G—Silver Oxide Powder Formed Cathodes—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium4.171.81
Mercury2.581.09
Silver4.171.81
Zinc0.790.36
Manganese5.964.57

(5) Subpart G—Silver Peroxide Cathodes—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver applied
  English units—pounds per 1,000,000 pounds of silver applied
Chromium1.000.43
Mercury0.620.26
Silver1.000.43
Zinc0.190.09
Manganese1.431.09

(6) Subpart G—Nickel Impregnated Cathodes—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of nickel applied
  English units—pounds per 1,000,000 pounds of nickel applied
Chromium42.018.2
Mercury26.011.0
Nickel42.018.2
Silver42.018.2
Zinc8.03.6
Manganese60.046.0

(7) Subpart G—Miscellaneous Wastewater Streams—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of cells produced
  English units—pounds per 1,000,000 pounds of cells produced
Chromium0.270.12
Cyanide0.0390.016
Mercury0.170.07
Nickel0.270.12
Silver0.270.12
Zinc0.050.02
Manganese0.390.30

(8) Subpart G—Silver Etch—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver processed
  English units—pounds per 1,000,000 pounds of silver processed
Chromium1.560.68
Mercury0.970.41
Silver1.560.68
Zinc0.300.13
Manganese2.231.71

(9) Subpart G—Silver Peroxide Production—PSNS.

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
  Metric units—mg/kg of silver peroxide produced
  English units—pounds per 1,000,000 pounds of silver peroxide produced
Chromium1.660.72
Mercury1.030.44
Silver1.660.72
Zinc0.320.14
Manganese2.371.82

(10) Subpart G—Silver Powder Production—PSNS.

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
  Metric units—mg/kg of silver powder produced
  English units—pounds per 1,000,000 pounds of silver powder produced
Chromium0.670.29
Mercury0.420.18
Silver0.670.29
Zinc0.130.06
Manganese0.960.74

(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.

[49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]

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