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§ 471.82 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
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 (BAT):
(a) Rolling spent neat oils—subpart H—BAT. There shall be no discharge of process wastewater pollutants.
(b) Rolling spent emulsions.
Subpart H—BAT
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of zinc rolled with emulsions | ||
| Chromium | 0.0005 | 0.0002 |
| Copper | 0.002 | 0.0009 |
| Cyanide | 0.0003 | 0.0001 |
| Zinc | 0.002 | 0.0006 |
(c) Rolling contact cooling water.
Subpart H—BAT
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of zinc rolled with contact cooling water | ||
| Chromium | 0.020 | 0.009 |
| Copper | 0.069 | 0.033 |
| Cyanide | 0.011 | 0.004 |
| Zinc | 0.055 | 0.023 |