Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

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 practicable control technology currently available: (a) Subpart A—Hot Rolling Spent Lubricant BPT 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 Oil and grease 2.060 1.236 TSS 4.223 2.008 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (b) Subpart A—Cold Rolling Spent Lubricant BPT 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 Oil and grease 7.580 4.548 TSS 15.539 7.390 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (c) Subpart A—Drawing Spent Lubricant BPT 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 Oil and grease 1.700 1.020 TSS 3.485 1.657 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (d) Subpart A—Solution Heat Treatment BPT 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 1.118 0.457 Copper 4.827 2.541 Lead 0.381 0.330 Nickel 4.878 3.227 Zinc 3.709 1.550 Oil and grease 50.820 30.492 TSS 104.181 49.549 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (e) Subpart A—Extrusion Heat Treatment BPT 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 0.002 Lead 0.0003 0.00026 Nickel 0.003 0.002 Zinc 0.002 0.001 Oil and grease 0.040 0.024 TSS 0.082 0.039 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (f) Subpart A—Annealing With Water BPT Effluent Limitations. Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average Metric units—mg/off-kg of copper or copper annealed with water English units—pounds per 1,000,000 off-pounds of copper or copper alloy annealed with water Chromium 2.493 1.020 Copper 10.767 5.667 Lead 0.850 0.736 Nickel 10.880 7.197 Zinc 8.273 3.456 Oil and grease 113.340 68.004 TSS 232.347 110.506 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (g) Subpart A—Annealing With Oil BPT 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 Oil and grease 0 0 TSS 0 0 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (h) Subpart A—Alkaline Cleaning Rinse BPT 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 Oil and grease 84.280 50.568 TSS 172.774 82.173 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (i) Subpart A—Alkaline Cleaning Rinse for Forged Parts BPT 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 Oil and grease 252.840 151.704 TSS 518.322 246.519 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (j) Subpart A—Alkaline Cleaning Bath BPT 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 parts alkaline cleaned English units—pounds per 1,000,000 off-pounds of copper or copper alloy forged parts alkaline cleaned Chromium 0.020 0.0084 Copper 0.089 0.046 Lead 0.0070 0.0060 Nickel 0.089 0.059 Zinc 0.068 0.028 Oil and grease 0.93 0.56 TSS 1.91 0.91 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (k) Subpart A—Pickling Rinse BPT 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 1.593 0.651 Copper 6.881 3.622 Lead 0.543 0.470 Nickel 6.954 4.599 Zinc 5.288 2.209 Oil and grease 72.440 43.464 TSS 148.502 70.629 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (l) Subpart A—Pickling Rinse for Forged Parts BPT 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 romium 1.723 0.705 Copper 7.444 3.918 Lead 0.587 0.509 Nickel 7.522 4.975 Zinc 5.720 2.389 Oil and grease 78.360 47.016 TSS 160.638 76.401 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (m) Subpart A—Pickling Bath BPT 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 pickle 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 Oil and grease 2.320 1.392 TSS 4.756 2.262 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (n) Subpart A—Pickling Fume Scrubber BPT 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 Oil and grease 12.520 7.512 TSS 25.666 12.207 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (o) Subpart A—Tumbling or Burnishing BPT 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—pounds 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 Oil and grease 11.660 6.996 TSS 23.903 11.368 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (p) Subpart A—Surface Coating BPT 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—pounds 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 Oil and grease 14.680 8.916 TSS 30.463 14.488 ph ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (q) Subpart A—Miscellaneous Waste Streams BPT 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 Oil and grease 0.436 0.261 TSS 0.893 0.425 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times.