40 CFR 468.11: 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.