Section 468.12 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievableExcept 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.| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| Metric units-mg/off-kg of copper or copper alloy heat treated |
| English units-pounds per 1,000,000 off-pounds of copper or copper alloy heat treated |
| Chromium | 0.284 | 0.116 |
| Copper | 1.227 | 0.646 |
| Lead | 0.096 | 0.083 |
| Nickel | 1.240 | 0.820 |
| Zinc | 0.943 | 0.394 |
(e) Subpart A-Extrusion Heat Treatment 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 heat treated on an extrusion press |
| English Units-pounds per/1,000,000 off-pounds of copper or copper alloy heat treated on an extrusion press |
| Chromium | 0.00088 | 0.00036 |
| Copper | 0.003 | 0.0020 |
| Lead | 0.0003 | 0.00026 |
| Nickel | 0.003 | 0.002 |
| Zinc | 0.002 | 0.001 |
(f) Subpart A-Annealing with Water 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 annealed with water |
| English Units-pounds per/1,000,000 off-pounds of copper or copper alloy annealed with water |
| Chromium | 0.545 | 0.223 |
| Copper | 2.356 | 1.240 |
| Lead | 0.186 | 0.161 |
| Nickel | 2.380 | 1.574 |
| Zinc | 1.810 | 0.756 |
(g) Subpart A-Annealing with Oil 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 annealed with oil |
| English units-pounds per 1,000,000 off-pounds of copper or copper alloy annealed with oil |
| Chromium | 0 | 0 |
| Copper | 0 | 0 |
| Lead | 0 | 0 |
| Nickel | 0 | 0 |
| Zinc | 0 | 0 |
(h) Subpart A-Alkaline Cleaning Rinse 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 alkaline cleaned |
| English units-pounds per 1,000,000 off-pounds of copper or copper alloy alkaline cleaned |
| Chromium | 1.854 | 0.758 |
| Copper | 8.006 | 4.214 |
| Lead | 0.632 | 0.547 |
| Nickel | 8.090 | 5.351 |
| Zinc | 6.152 | 2.570 |
(i) Subpart A-Alkaline Cleaning Rinse for Forged Parts 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 forged parts alkaline cleaned |
| English Units-pounds per 1,000,000 off-pounds of copper or copper alloy forged parts alkaline cleaned |
| Chromium | 5.562 | 2.275 |
| Copper | 24.019 | 12.642 |
| Lead | 1.896 | 1.643 |
| Nickel | 24.272 | 16.055 |
| Zinc | 18.457 | 7.711 |
(j) Subpart A-Alkaline Cleaning Bath 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 alkaline cleaned |
| English Units-pounds per 1,000,000 off-pounds of copper or copper alloy alkaline cleaned |
| Chromium | 0.020 | 0.0084 |
| Copper | 0.088 | 0.046 |
| Lead | 0.0070 | 0.0060 |
| Nickel | 0.089 | 0.059 |
| Zinc | 0.068 | 0.028 |
(k) Subpart A-Pickling Rinse 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 pickled |
| English Units-pounds per 1,000,000 off-pounds of copper or copper alloy pickled |
| Chromium | 0.574 | 0.235 |
| Copper | 2.481 | 1.306 |
| Lead | 0.195 | 0.169 |
| Nickel | 2.507 | 1.658 |
| Zinc | 1.906 | 0.796 |
(l) Subpart A-Pickling Rinse for Forged Parts 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 forged parts pickled |
| English Units-pounds per 1,000,000 off-pounds of copper or copper alloy forged parts pickled |
| Chromium | 1.723 | 0.705 |
| Copper | 7.444 | 3.918 |
| Lead | 0.587 | 0.509 |
| Nickel | 7.522 | 4.975 |
| Zinc | 5.720 | 2.389 |
(m) Subpart A-Pickling Bath 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 pickled |
| English units-pounds per 1,000,000 off-pounds of copper or copper alloy pickled |
| Chromium | 0.051 | 0.020 |
| Copper | 0.220 | 0.116 |
| Lead | 0.017 | 0.015 |
| Nickel | 0.222 | 0.147 |
| Zinc | 0.169 | 0.070 |
(n) Subpart A-Pickling Fume Scrubber 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 pickled |
| English units-pounds per 1,000,000 off-pounds of copper or copper alloy pickled |
| Chromium | 0.275 | 0.112 |
| Copper | 1.189 | 0.626 |
| Lead | 0.093 | 0.081 |
| Nickel | 1.201 | 0.795 |
| Zinc | 0.913 | 0.381 |
(o) Subpart A-Tumbling or Burnishing 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 tumbled or burnished |
| English units-pound per 1,000,000 off-pounds of copper or copper alloy tumbled or burnished |
| Chromium | 0.256 | 0.104 |
| Copper | 1.107 | 0.583 |
| Lead | 0.087 | 0.075 |
| Nickel | 1.119 | 0.740 |
| Zinc | 0.851 | 0.355 |
(p) Subpart A-Surface Coating 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 surface coated |
| English units-pound per 1,000,000 off-pounds of copper or copper alloy surface coated |
| Chromium | 0.326 | 0.133 |
| Copper | 1.411 | 0.743 |
| Lead | 0.111 | 0.096 |
| Nickel | 1.426 | 0.943 |
| Zinc | 1.084 | 0.453 |
(q) Subpart A-Miscellaneous Waste Streams 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 formed |
| English units-pounds per 1,000,000 off-pounds of copper or copper alloy formed |
| Chromium | 0.009 | 0.003 |
| Copper | 0.041 | 0.021 |
| Lead | 0.003 | 0.002 |
| Nickel | 0.041 | 0.027 |
| Zinc | 0.031 | 0.013 |