New source performance standards (NSPS).

  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. Precious Metals Forming Subcategory
  8. New source performance standards (NSPS).

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§ 471.43 New source performance standards (NSPS).

Any new source subject to this subpart must achieve the following new source performance standards (NSPS):

(a) Rolling Spent Neat Oils - subpart D - NSPS. There shall be no discharge of process wastewater pollutants.

(b) Rolling spent emulsions.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals rolled with emulsions
Cadmium 0.026 0.012
Copper 0.147 0.077
Cyanide 0.023 0.010
Silver 0.032 0.013
Oil and grease 1.54 0.925
TSS 3.16 1.51
pH (1) (1)

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

(c) Drawing spent neat oils - subpart D - NSPS. There shall be no discharge of process wastewater pollutants.

(d) Drawing spent emulsions.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals drawn with emulsions
Cadmium 0.017 0.007
Copper 0.091 0.048
Cyanide 0.014 0.006
Silver 0.020 0.008
Oil and grease 0.950 0.570
TSS 1.95 0.927
pH (1) (1)

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

(e) Drawing spent soap solutions.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals drawn with soap solutions
Cadmium 0.001 0.0005
Copper 0.006 0.003
Cyanide 0.0009 0.0004
Silver 0.002 0.0006
Oil and grease 0.063 0.038
TSS 0.128 0.061
pH (1) (1)

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

(f) Metal powder production atomization wastewater.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals powder wet atomized
Cadmium 2.27 1.00
Copper 12.7 6.68
Cyanide 1.94 0.802
Silver 2.74 1.14
Oil and grease 134 80.2
TSS 274 131
pH (1) (1)

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

(g) Heat treatment contact cooling water.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals heat treated
Cadmium 0.142 0.063
Copper 0.793 0.417
Cyanide 0.121 0.050
Silver 0.171 0.071
Oil and grease 8.34 5.01
TSS 17.1 8.13
pH (1) (1)

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

(h) Semi-continuous and continuous casting contact cooling water.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals cast by the semi-continuous or continuous method
Cadmium 0.350 0.155
Copper 1.96 1.03
Cyanide 0.299 0.124
Silver 0.423 0.175
Oil and grease 20.6 12.4
TSS 42.3 20.1
pH (1) (1)

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

(i) Stationary casting contact cooling water - subpart D - NSPS. There shall be no discharge of process wastewater pollutants.

(j) Direct chill casting contact cooling water.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals cast by the direct chill method
Cadmium 0.367 0.162
Copper 2.05 1.08
Cyanide 0.313 0.130
Silver 0.443 0.184
Oil and grease 21.6 13.0
TSS 44.3 21.1
pH (1) (1)

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

(k) Shot casting contact cooling water.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals shot cast
Cadmium 0.125 0.055
Copper 0.698 0.367
Cyanide 0.107 0.044
Silver 0.151 0.063
Oil and grease 7.34 4.41
TSS 15.1 7.16
pH (1) (1)

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

(l) Wet air pollution control scrubber blowdown - subpart D - NSPS. There shall be no discharge of process wastewater pollutants.

(m) Pressure bonding contact cooling water.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals and base metal pressure bonded
Cadmium 0.029 0.013
Copper 0.159 0.084
Cyanide 0.024 0.010
Silver 0.034 0.014
Oil and grease 1.67 1.00
TSS 3.43 1.63
pH (1) (1)

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

(n) Surface treatment spent baths.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals surface treated
Cadmium 0.033 0.015
Copper 0.183 0.097
Cyanide 0.028 0.012
Silver 0.040 0.017
Oil and grease 1.93 1.16
TSS 3.95 1.88
pH (1) (1)

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

(o) Surface treatment rinse.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals surface treated
Cadmium 0.210 0.093
Copper 1.17 0.616
Cyanide 0.179 0.074
Silver 0.253 0.105
Oil and grease 12.3 7.39
TSS 25.3 12.0
pH (1) (1)

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

(p) Alkaline cleaning spent baths.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned
Cadmium 0.021 0.009
Copper 0.114 0.060
Cyanide 0.018 0.007
Silver 0.025 0.010
Oil and grease 1.20 0.720
TSS 2.46 1.17
pH (1) (1)

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

(q) Alkaline cleaning rinse.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned
Cadmium 0.381 0.168
Copper 2.13 1.112
Cyanide 0.325 0.135
Silver 0.459 0.191
Oil and grease 22.4 13.5
TSS 45.9 21.9
pH (1) (1)

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

(r) Alkaline cleaning pre-bonding wastewater.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals and base metal cleaned prior to bonding
Cadmium 0.400 0.174
Copper 2.21 1.16
Cyanide 0.337 0.139
Silver 0.476 0.197
Oil and grease 23.2 13.9
TSS 47.6 22.6
pH (1) (1)

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

(s) Tumbling or burnishing wastewater.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals tumbled or burnished
Cadmium 0.412 0.182
Copper 2.30 1.21
Cyanide 0.351 0.145
Silver 0.496 0.206
Oil and grease 24.2 14.5
TSS 49.6 23.6
pH (1) (1)

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

(t) Sawing or grinding spent neat oils - subpart D - NSPS. There shall be no discharge of process wastewater pollutants.

(u) Sawing or grinding spent emulsions.

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Subpart D - NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of precious metals sawed or ground with emulsions
Cadmium 0.032 0.014
Copper 0.178 0.094
Cyanide 0.027 0.011
Silver 0.038 0.016
Oil and grease 1.87 1.12
TSS 3.83 1.82
pH (1) (1)

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

(v) Degreasing spent solvents - subpart D - NSPS. 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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