40 CFR § 461.72
Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
June 9, 2020
CFR

(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

Open Table
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
Chromium 0.24 0.099
Mercury 0.14 0.055
Silver 0.23 0.093
Zinc 0.80 0.34
Manganese 0.37 0.16

(2) Subpart G—Gelled Amalgam Anodes.

BAT Effluent Limitations

Open Table
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
Chromium 0.030 0.012
Mercury 0.017 0.007
Silver 0.028 0.012
Zinc 0.099 0.042
Manganese 0.046 0.020

(3) Subpart G—Zinc Oxide Formed Anodes.

BAT Effluent Limitations

Open Table
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
Chromium 9.53 3.90
Mercury 5.42 2.17
Silver 8.89 3.68
Zinc 31.64 13.22
Manganese 14.74 6.28

(4) Subpart G—Electrodeposited Anodes.

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   Metric units—mg/kg of zinc deposited
   English units—pounds per 1,000,000 pounds of zinc deposited
Chromium 94.47 38.65
Mercury 53.68 21.47
Silver 88.03 36.50
Zinc 313.46 130.97
Manganese 146.00 62.26

(5) Subpart G—Silver Powder Formed Cathodes.

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   Metric units—mg/kg of silver applied
   English units—pounds per 1,000,000 pounds of silver applied
Chromium 13.07 5.35
Mercury 7.43 2.97
Silver 12.18 5.05
Zinc 43.36 18.12
Manganese 20.20 8.61

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

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   Metric units—mg/kg of silver applied
   English units—pounds per 1,000,000 pounds of silver applied
Chromium 8.73 3.57
Mercury 4.96 1.99
Silver 8.14 3.37
Zinc 28.98 12.11
Manganese 13.50 5.76

(7) Subpart G—Silver Peroxide Cathodes.

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   Metric units—mg/kg of silver applied
   English units—pounds per 1,000,000 pounds of silver applied
Chromium 2.09 0.87
Mercury 1.19 0.48
Silver 1.95 0.81
Zinc 6.95 2.90
Manganese 3.24 1.38

(8) Subpart G—Nickel Impregnated Cathodes.

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   Metric units—mg/kg of nickel applied
   English units—pounds per 1,000,000 pounds of nickel applied
Chromium 88.0 36.0
Mercury 50.0 20.0
Nickel 384.0 254.0
Silver 82.0 34.0
Zinc 292.0 122.0
Manganese 136.0 58.0

(9) Subpart G—Miscellaneous Wastewater Streams.

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum 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
Chromium 0.57 0.23
Cyanide 0.38 0.16
Mercury 0.32 0.13
Nickel 2.48 1.64
Silver 0.53 0.22
Zinc 1.88 0.79
Manganese 0.88 0.37

(10) Subpart G—Silver Etch.

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum 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
Chromium 3.27 1.34
Mercury 1.86 0.74
Silver 3.05 1.26
Zinc 10.86 4.54
Manganese 5.06 2.16

(11) Subpart G—Silver Peroxide Production.

BAT Effluent Limitations

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   Metric units—mg/kg of silver peroxide produced
   English units—pounds per 1,000,000 pounds of silver peroxide produced
Chromium 3.48 1.42
Mercury 1.98 0.79
Silver 3.24 1.34
Zinc 11.55 4.83
Manganese 5.38 2.29

(12) Subpart G—Silver Powder Production.

BAT Effluent Limitations

Open Table
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
Chromium 1.41 0.58
Mercury 0.80 0.32
Silver 1.32 0.55
Zinc 4.69 1.96
Manganese 2.18 0.93

(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]


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