Except as provided in 40 CFR 403.7, any new source subject to this subject which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. 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--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder wet atomized
--------------------------Copper....................................... 9.58 5.04Cyanide...................................... 1.46 0.605Lead......................................... 2.12 1.01------------------------------------------------------------------------
(b) Sizing spent emulsions.
Subpart J--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder sized
-------------------------Copper........................................ 0.028 0.015Cyanide....................................... 0.004 0.002Lead.......................................... 0.006 0.003------------------------------------------------------------------------
(c) Oil-resin impregnation wastewater--subpart J--PSNS. There shall be no discharge of process wastewater pollutants.
(d) Steam treatment wet air pollution control scrubber blowdown.
Subpart J--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder metallurgy parts
steam treated
--------------------------Copper....................................... 0.151 0.079Cyanide...................................... 0.023 0.010Lead......................................... 0.033 0.016------------------------------------------------------------------------
(e) Tumbling, burnishing and cleaning wastewater.
Subpart J--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder metallurgy parts
tumbled, burnished, or
cleaned
--------------------------Copper....................................... 0.836 0.440Cyanide...................................... 0.128 0.053Lead......................................... 0.185 0.088------------------------------------------------------------------------
(f) Sawing or grinding spent neat oils--subpart J--PSNS. There shall be no discharge of process wastewater pollutants.
(g) Sawing or grinding spent emulsions.
Subpart J--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder metallurgy parts
sawed or ground with
emulsions
-------------------------Copper........................................ 0.035 0.018Cyanide....................................... 0.005 0.002Lead.......................................... 0.008 0.004------------------------------------------------------------------------
(h) Sawing or grinding contact cooling water.
Subpart J--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder sawed or ground
with contact cooling
water
--------------------------Copper....................................... 3.08 1.620Cyanide...................................... 0.470 0.195Lead......................................... 0.681 0.324------------------------------------------------------------------------
(i) Hot pressing contact cooling water.
Subpart J--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder cooled after
pressing
---------------------------Copper...................................... 1.67 0.880Cyanide..................................... 0.255 0.106Lead........................................ 0.370 0.176------------------------------------------------------------------------
(j) Mixing wet air pollution control scrubber blowdown.
Subpart J--PSNS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
powder mixed
--------------------------Copper....................................... 15.0 7.90Cyanide...................................... 2.29 0.948Lead......................................... 3.32 1.58------------------------------------------------------------------------
(k) Degreasing spent solvents--subpart J--PSNS. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986]