40 CFR 471.11: 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 for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

(a) Rolling spent emulsions.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth rolled with emulsions

Antimony 0.068 0.030

Lead 0.010 0.005

Oil and grease 0.468 0.281

TSS 0.960 0.457

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(b) Rolling spent soap solutions.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pound) of lead-tin-bismuth rolled with soap solutions

Antimony 0.125 0.055

Lead 0.019 0.009

Oil and grease 0.860 0.520

TSS 1.80 0.840

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(c) Drawing spent neat oils—subpart A—BPT. There shall be no discharge of process wastewater pollutants.

(d) Drawing spent emulsions.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth drawn with emulsions

Antimony 0.076 0.034

Lead 0.011 0.005

Oil and grease 0.526 0.316

TSS 1.08 0.513

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(e) Drawing spent soap solutions.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth drawn with soap solutions

Antimony 0.022 0.010

Lead 0.003 0.002

Oil and grease 0.149 0.090

TSS 0.306 0.146

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(f) Extrusion press and solution heat treatment contact cooling water.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds of lead-tin-bismuth heat treated

Antimony 4.14 1.850

Lead 0.605 0.288

Oil and grease 28.80 17.30

TSS 59.10 28.10

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(g) Extrusion press hydraulic fluid leakage.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth extruded

Antimony 0.158 0.071

Lead 0.023 0.011

Oil and grease 1.10 0.660

TSS 2.26 1.07

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(h) Continuous strip casting contact cooling water.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth cast by the continuous strip method

Antimony 0.003 0.001

Lead 0.0004 0.0002

Oil and grease 0.020 0.012

TSS 0.041 0.020

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(i) Semi-continuous ingot casting contact cooling water.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth ingot cast by the sem-continuous method

Antimony 0.085 0.038

Lead 0.013 0.006

Oil and grease 0.588 0.353

TSS 1.21 0.574

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(j) Shot casting contact cooling water.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth shot cast

Antimony 0.107 0.048

Lead 0.016 0.008

Oil and grease 0.746 0.448

TSS 1.53 0.728

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(k) Shot-forming wet air pollution control scrubber blowdown.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth shot formed

Antimony 1.69 0.753

Lead 0.247 0.118

Oil and grease 11.8 7.06

TSS 24.1 11.5

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(l) Alkaline cleaning spent baths.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth alkaline cleaned

Antimony 0.345 0.154

Lead 0.051 0.024

Oil and grease 2.40 1.44

TSS 4.92 2.34

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(m) Alkaline cleaning rinse.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth alkaline cleaned

Antimony 6.78 3.02

Lead 0.991 0.472

Oil and grease 47.2 28.4

TSS 96.8 46.0

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(n) Swaging spent emulsions.

Subpart A—BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth swaged with emulsion

Antimony 0.005 0.002

Lead 0.0007 0.0004

Oil and grease 0.036 0.022

TSS 0.073 0.034

pH (1)

1 Within the range of 7.5 to 10.0 at all times.

(o) Degreasing spent solvents—subpart A—BPT. There shall be no discharge of process wastewater pollutants.