View all text of Subpart G [§ 461.70 - § 461.75]
§ 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 | 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 |
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(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 | 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 |
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(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 | 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 |
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(4) Subpart G—Electrodeposited Anodes.
BAT Effluent Limitations
| 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 |
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(5) Subpart G—Silver Powder Formed Cathodes.
BAT Effluent Limitations
| 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 |
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(6) Subpart G—Silver Oxide Powder Formed Cathodes.
BAT Effluent Limitations
| 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 |
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(7) Subpart G—Silver Peroxide Cathodes.
BAT Effluent Limitations
| 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 |
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(8) Subpart G—Nickel Impregnated Cathodes.
BAT Effluent Limitations
| 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 |
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(9) Subpart G—Miscellaneous Wastewater Streams.
BAT Effluent Limitations
| 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 |
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(10) Subpart G—Silver Etch.
BAT Effluent Limitations
| 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 |
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(11) Subpart G—Silver Peroxide Production.
BAT Effluent Limitations
| 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 |
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(12) Subpart G—Silver Powder Production.
BAT Effluent Limitations
| 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 |
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(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.