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. 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