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.
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) |
1Within 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.
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) |
1Within the range of 7.5 to 10.0 at all times.
(e) Drawing spent soap solutions.
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) |
1Within the range of 7.5 to 10.0 at all times.
(f) Metal powder production atomization wastewater.
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) |
1Within the range of 7.5 to 10.0 at all times.
(g) Heat treatment contact cooling water.
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) |
1Within the range of 7.5 to 10.0 at all times.
(h) Semi-continuous and continuous casting contact cooling water.
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) |
1Within 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.
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) |
1Within the range of 7.5 to 10.0 at all times.
(k) Shot casting contact cooling water.
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) |
1Within 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.
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) |
1Within the range of 7.5 to 10.0 at all times.
(n) Surface treatment spent baths.
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) |
1Within the range of 7.5 to 10.0 at all times.
(o) Surface treatment rinse.
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) |
1Within the range of 7.5 to 10.0 at all times.
(p) Alkaline cleaning spent baths.
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) |
1Within the range of 7.5 to 10.0 at all times.
(q) Alkaline cleaning rinse.
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) |
1Within the range of 7.5 to 10.0 at all times.
(r) Alkaline cleaning pre-bonding wastewater.
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) |
1Within the range of 7.5 to 10.0 at all times.
(s) Tumbling or burnishing wastewater.
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) |
1Within 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.
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) |
1Within 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]