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§ 468.12 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent reduction attainable by the application of the best available technology economically achievable (BAT):
(a) Subpart A—Hot Rolling Spent Lubricant BAT Effluent Limitations.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| Metric units—mg/off-kg of copper or copper alloy hot rolled | ||
| English Units—pounds per 1,000,000 off-pounds of copper or copper alloy hot rolled | ||
| Chromium | 0.045 | 0.018 |
| Copper | 0.195 | 0.103 |
| Lead | 0.015 | 0.013 |
| Nickel | 0.197 | 0.130 |
| Zinc | 0.150 | 0.062 |
(b) Subpart A—Cold Rolling Spent Lubricant BAT Effluent Limitations.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| Metric units—mg/off-kg of copper or copper alloy cold rolled | ||
| English units—pounds per 1,000,000 off-pounds of copper or copper alloy cold rolled | ||
| Chromium | 0.166 | 0.068 |
| Copper | 0.720 | 0.379 |
| Lead | 0.056 | 0.049 |
| Nickel | 0.727 | 0.481 |
| Zinc | 0.553 | 0.231 |
(c) Subpart A—Drawing Spent Lubricant BAT Effluent Limitations.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| Metric units—mg/off-kg of copper or copper alloy drawn | ||
| English units—pounds per 1,000,000 off-pounds of copper or copper alloy drawn | ||
| Chromium | 0.037 | 0.015 |
| Copper | 0.161 | 0.085 |
| Lead | 0.012 | 0.011 |
| Nickel | 0.163 | 0.107 |
| Zinc | 0.124 | 0.051 |
(d) Subpart A—Solution Heat Treatment BAT Effluent Limitations.