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

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Nonferrous Metals Forming and Metal Powders Point Source Category
  7. Refractory Metals Forming Subcategory
  8. Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

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§ 471.51 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 neat oils and graphite based lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

(b) Rolling spent emulsions.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals rolled with emulsions
Copper 0.815 0.429
Nickel 0.824 0.545
Fluoride 25.5 11.3
Molybdenum 2.84 1.47
Oil and grease 8.58 5.15
TSS 17.6 8.37
pH (1) (1)

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

(c) Drawing spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

(d) Extrusion spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

(e) Extrusion press hydraulic fluid leakage.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals extruded
Copper 2.26 1.19
Nickel 2.29 1.51
Fluoride 70.8 31.4
Molybdenum 7.87 4.07
Oil and grease 23.8 14.3
TSS 48.8 23.2
pH (1) (1)

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

(f) Forging spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

(g) Forging contact cooling water.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of forged refractory metals cooled with water
Copper 0.614 0.323
Nickel 0.620 0.410
Fluoride 19.2 8.53
Molybdenum 2.14 1.11
Oil and grease 6.46 3.88
TSS 13.3 6.30
pH (1) (1)

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

(h) Equipment cleaning wastewater.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals formed
Copper 2.59 1.36
Nickel 2.61 1.73
Fluoride 80.9 35.9
Molybdenum 8.99 4.65
Oil and grease 27.2 16.3
TSS 55.8 26.5
pH (1) (1)

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

(i) Metal powder production wastewater.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals powder produced
Copper 0.534 0.281
Nickel 0.540 0.357
Fluoride 16.70 7.42
Molybdenum 1.86 0.961
Oil and grease 5.62 3.37
TSS 11.5 5.48
pH (1) (1)

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

(j) Metal powder production floor wash wastewater - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

(k) Metal powder pressing spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

(l) Surface treatment spent baths.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals surface treated
Copper 0.739 0.389
Nickel 0.747 0.494
Fluoride 23.2 10.3
Molybdenum 2.57 1.33
Oil and grease 7.78 4.68
TSS 16.0 7.59
pH (1) (1)

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

(m) Surface treatment rinse.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals surface treated
Copper 230 121
Nickel 232 154
Fluoride 7,200 3,200
Molybdenum 800 414
Oil and grease 2,420 1,450
TSS 4,960 2,360
pH (1) (1)

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

(n) Alkaline cleaning spent baths.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned
Copper 0.635 0.334
Nickel 0.641 0.424
Fluoride 19.9 8.82
Molybdenum 2.21 1.14
Oil and grease 6.68 4.01
TSS 13.7 6.51
pH (1) (1)

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

(o) Alkaline cleaning rinse.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned
Copper 1,550 816
Nickel 1,570 1,040
Fluoride 48,600 21,600
Molybdenum 5,400 2,790
Oil and grease 16,300 9,790
TSS 33,500 15,900
pH (1) (1)

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

(p) Molten salt rinse.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals treated with molten salt
Copper 12.1 6.33
Nickel 12.2 8.04
Fluoride 377 167
Molybdenum 41.9 21.7
Oil and grease 127 76.0
TSS 260 124
pH (1) (1)

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

(q) Tumbling or burnishing wastewater.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals tumbled or burnished
Copper 23.8 12.5
Nickel 24.0 15.9
Fluoride 744 330
Molybdenum 82.7 42.8
Oil and grease 250 150
TSS 513 244
pH (1) (1)

Within the range of 7.5 to 10.0 at all times.

(r) Sawing or grinding spent neat oils - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

(s) Sawing or grinding spent emulsions.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with emulsions
Copper 0.565 0.297
Nickel 0.570 0.377
Fluoride 17.7 7.84
Molybdenum 1.97 1.02
Oil and grease 5.94 3.57
TSS 12.2 5.79
pH (1) (1)

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

(t) Sawing or grinding contact cooling water.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with contact cooling water
Copper 46.2 24.3
Nickel 46.7 30.9
Fluoride 1450 642
Molybdenum 161 83.1
Oil and grease 486 292
TSS 997 474
pH (1) (1)

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

(u) Sawing or grinding rinse.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of sawed or ground refractory metals rinsed
Copper 0.257 0.135
Nickel 0.259 0.172
Fluoride 8.03 3.57
Molybdenum 0.893 0.462
Oil and grease 2.70 1.62
TSS 5.54 2.63
pH (1) (1)

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

(v) Wet air pollution control scrubber blowdown.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground, surface coated or surface treated
Copper 1.50 0.787
Nickel 1.51 1.00
Fluoride 46.8 20.8
Molybdenum 5.20 2.69
Oil and grease 15.8 9.45
TSS 32.3 15.4
pH (1) (1)

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

(w) Miscellaneous wastewater sources.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals formed
Copper 0.656 0.345
Nickel 0.663 0.438
Fluoride 20.6 9.11
Molybdenum 2.28 1.18
Oil and grease 6.9 4.14
TSS 14.2 6.73
pH (1) (1)

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

(x) Dye penetrant testing wastewater.

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Subpart E - BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals tested
Copper 0.150 0.078
Nickel 0.150 0.099
Fluoride 4.60 2.00
Molybdenum 0.513 0.266
Oil and grease 1.60 0.930
TSS 3.20 1.50
pH (1) (1)

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

(y) Degreasing spent solvents - subpart E - BPT. There shall be no discharge of process wastewater pollutants.

[50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]


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