Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and by August 23, 1988 achieve the following pretreatment standards for existing sources (PSES). The mass of wastewater pollutants in metal powders process wastewater introduced into a POTW shall not exceed the following values: (a) Metal powder production atomization wastewater. Subpart J—PSES 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 5.040 Cyanide 1.46 0.605 Lead 2.12 1.01 (b) Sizing spent emulsions. Subpart J—PSES 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 (c) Oil-resin impregnation wastewater—subpart J—PSES. (d) Steam treatment wet air pollution control scrubber blowdown. Subpart J—PSES Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of powder metallurgy part steam treated Copper 1.51 0.792 Cyanide 0.230 0.095 Lead 0.333 0.159 (e) Tumbling, burnishing and cleaning wastewater. Subpart J—PSES 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 8.36 4.40 Cyanide 1.28 0.528 Lead 1.85 0.880 (f) Sawing or grinding spent neat oils—subpart J—PSES. There shall be no discharge of process watewater pollutants. (g) Sawing or grinding spent emulsions. Subpart J—PSES 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 (h) Sawing or grinding contact cooling water. Subpart J—PSES 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 (i) Hot pressing contact cooling water. Subpart J—PSES 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 16.7 8.80 Cyanide 2.55 1.06 Lead 3.70 1.76 (j) Mixing wet air pollution control scrubber blowdown. Subpart J—PSES 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 (k) Degreasing spent solvents—subpart J—PSES. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986]