Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
(a) Metal powder production atomization wastewater.
Subpart J--BPT------------------------------------------------------------------------
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 1.01Oil and grease.............................. 101 60.5TSS......................................... 207 98.3pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(b) Sizing spent emulsion.
Subpart J--BPT------------------------------------------------------------------------
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 0.003Oil and grease................................ 0.292 0.175TSS........................................... 0.599 0.285pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(c) Oil-resin impregnation wastewater--subpart J--BPT. There shall be no discharge of process wastewater pollutants.
(d) Steam treatment wet air pollution control scrubber blowdown.
Subpart J--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
power metallurgy parts
steam treated
---------------------------Copper...................................... 1.51 0.792Cyanide..................................... 0.230 0.095Lead........................................ 0.333 0.159Oil and grease.............................. 15.9 9.51TSS......................................... 32.5 15.5pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(e) Tumbling, burnishing and cleaning wastewater.
Subpart J--BPT------------------------------------------------------------------------
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...................................... 8.36 4.40Cyanide..................................... 1.28 0.528Lead........................................ 1.85 0.880Oil and grease.............................. 88.0 52.800TSS......................................... 181 85.8pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(f) Sawing or grinding spent neat oils--subpart J--BPT. There shall be no discharge of process wastewater pollutants.
(g) Sawing or grinding spent emulsion.
Subpart J--BPT------------------------------------------------------------------------
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
emulsion
---------------------------Copper...................................... 0.035 0.018Cyanide..................................... 0.005 0.002Lead........................................ 0.008 0.004Oil and grease.............................. 0.362 0.217TSS......................................... 0.742 0.353pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(h) Sawing or grinding contact cooling water.
Subpart J--BPT------------------------------------------------------------------------
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
contact cooling
---------------------------Copper...................................... 3.08 1.62Cyanide..................................... 0.470 0.195Lead........................................ 0.681 0.324Oil and grease.............................. 32.4 19.5TSS......................................... 66.4 31.6pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(i) Hot pressing contact cooling water.
Subpart J--BPT------------------------------------------------------------------------
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...................................... 16.7 8.80Cyanide..................................... 2.55 1.06Lead........................................ 3.70 1.76Oil and grease.............................. 176 106TSS......................................... 361 172pH.......................................... (\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--BPT------------------------------------------------------------------------
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 1.58Oil and grease.............................. 158 94.8TSS......................................... 324 154pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(k) Degreasing spent solvents--subpart J--BPT. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986]