40 CFR 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.

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