New source performance standards (NSPS).

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 ) 1 Within 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 ) 1 Within 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 ) 1 Within 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 ) 1 Within 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 ) 1 Within the range of 7.5 to 10.0 at all times. (h) Sawing or grinding 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 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 ) 1 Within 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 ) 1 Within 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 ) 1 Within 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]