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Electronic Code of Federal Regulations

e-CFR data is current as of February 27, 2020

Title 40Chapter ISubchapter NPart 461Subpart G → §461.71


Title 40: Protection of Environment
PART 461—BATTERY MANUFACTURING POINT SOURCE CATEGORY
Subpart G—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).

(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]

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