Any new source subject to this subpart must achieve the following new source performance standards (NSPS). The mass of pollutants in the metal powder process wastewater shall not exceed the following values:
(a) Metal powder production atom-ization wastewater.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder wet atomized | ||
| Copper | 9.58 | 5.04 |
| Cyanide | 1.46 | 0.605 |
| Lead | 2.12 | 1.01 |
| Oil and grease | 101 | 60.5 |
| TSS | 207 | 98.3 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(b) Sizing spent emulsions.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder sized | ||
| Copper | 0.028 | 0.015 |
| Cyanide | 0.004 | 0.002 |
| Lead | 0.006 | 0.003 |
| Oil and grease | 0.292 | 0.175 |
| TSS | 0.599 | 0.285 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(c) Oil-resin impregnation wastewater—subpart J—NSPS. There shall be no discharge of process wastewater pollutants.
(d) Steam treatment wet air pollution control scrubber blowdown.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder metallurgy parts steam treated | ||
| Copper | 0.151 | 0.079 |
| Cyanide | 0.023 | 0.010 |
| Lead | 0.033 | 0.016 |
| Oil and grease | 1.59 | 0.951 |
| TSS | 3.25 | 1.55 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(e) Tumbling, burnishing and cleaning wastewater.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder metallurgy parts tumbled, burnished, or cleaned | ||
| Copper | 0.836 | 0.440 |
| Cyanide | 0.128 | 0.053 |
| Lead | 0.185 | 0.088 |
| Oil and grease | 8.80 | 5.28 |
| TSS | 18.1 | 8.58 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(f) Sawing or grinding spent neat oils—subpart J—NSPS. There shall be no discharge of process wastewater pollutants.
(g) Sawing or grinding spent emulsions.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with emulsions | ||
| Copper | 0.035 | 0.018 |
| Cyanide | 0.005 | 0.002 |
| Lead | 0.008 | 0.004 |
| Oil and grease | 0.362 | 0.217 |
| TSS | 0.742 | 0.353 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(h) Sawing or grinding contact cooling waterr.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder sawed or ground with contact cooling water | ||
| Copper | 3.08 | 1.62 |
| Cyanide | 0.470 | 0.195 |
| Lead | 0.681 | 0.324 |
| Oil and grease | 32.4 | 19.5 |
| TSS | 66.4 | 31.6 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(i) Hot pressing contact cooling water.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder cooled after pressing | ||
| Copper | 1.67 | 0.880 |
| Cyanide | 0.255 | 0.106 |
| Lead | 0.370 | 0.176 |
| Oil and grease | 17.6 | 10.6 |
| TSS | 36.1 | 17.2 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(j) Mixing wet air pollution control scrubber blowdown.
Subpart J—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of powder mixed | ||
| Copper | 15.0 | 7.90 |
| Cyanide | 2.29 | 0.948 |
| Lead | 3.32 | 1.58 |
| Oil and grease | 158 | 94.8 |
| TSS | 324 | 154 |
| pH | (1) | (1) |
1Within the range of 7.5 to 10.0 at all times.
(k) Degreasing spent solvents—subpart J—NSPS. There shall be no discharge of process wastewater pollutants.
[50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986]
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