currently available (BPT).
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) Rolling spent emulsions.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth rolled
with emulsions
---------------------------Antimony.................................... 0.068 0.030Lead........................................ 0.010 0.005Oil and grease.............................. 0.468 0.281TSS......................................... 0.960 0.457pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(b) Rolling spent soap solutions.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pound) of lead-
tin-bismuth rolled with
soap solutions
---------------------------Antimony.................................... 0.125 0.055Lead........................................ 0.019 0.009Oil and grease.............................. 0.860 0.520TSS......................................... 1.80 0.840pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(c) Drawing spent neat oils--subpart A--BPT. There shall be no discharge of process wastewater pollutants.
(d) Drawing spent emulsions.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth drawn
with emulsions
---------------------------Antimony.................................... 0.076 0.034Lead........................................ 0.011 0.005Oil and grease.............................. 0.526 0.316TSS......................................... 1.08 0.513pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(e) Drawing spent soap solutions.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth drawn
with soap solutions
---------------------------Antimony.................................... 0.022 0.010Lead........................................ 0.003 0.002Oil and grease.............................. 0.149 0.090TSS......................................... 0.306 0.146pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(f) Extrusion press and solution heat treatment contact cooling water.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds of lead-
tin-bismuth heat treated
---------------------------Antimony.................................... 4.14 1.850Lead........................................ 0.605 0.288Oil and grease.............................. 28.80 17.30TSS......................................... 59.10 28.10pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(g) Extrusion press hydraulic fluid leakage.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth extruded
---------------------------Antimony.................................... 0.158 0.071Lead........................................ 0.023 0.011Oil and grease.............................. 1.10 0.660TSS......................................... 2.26 1.07pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(h) Continuous strip casting contact cooling water.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth cast by
the continuous strip
method
---------------------------Antimony.................................... 0.003 0.001Lead........................................ 0.0004 0.0002Oil and grease.............................. 0.020 0.012TSS......................................... 0.041 0.020pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(i) Semi-continuous ingot casting contact cooling water.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth ingot
cast by the sem-continuous
method
---------------------------Antimony.................................... 0.085 0.038Lead........................................ 0.013 0.006Oil and grease.............................. 0.588 0.353TSS......................................... 1.21 0.574pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(j) Shot casting contact cooling water.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth shot cast
---------------------------Antimony.................................... 0.107 0.048Lead........................................ 0.016 0.008Oil and grease.............................. 0.746 0.448TSS......................................... 1.53 0.728pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(k) Shot-forming wet air pollution control scrubber blowdown.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth shot
formed
---------------------------Antimony.................................... 1.69 0.753Lead........................................ 0.247 0.118Oil and grease.............................. 11.8 7.06TSS......................................... 24.1 11.5pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(l) Alkaline cleaning spent baths.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth alkaline
cleaned
---------------------------Antimony.................................... 0.345 0.154Lead........................................ 0.051 0.024Oil and grease.............................. 2.40 1.44TSS......................................... 4.92 2.34pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(m) Alkaline cleaning rinse.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth alkaline
cleaned
---------------------------Antimony.................................... 6.78 3.02Lead........................................ 0.991 0.472Oil and grease.............................. 47.2 28.4TSS......................................... 96.8 46.0pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(n) Swaging spent emulsions.
Subpart A--BPT------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
lead-tin-bismuth swaged
with emulsion
---------------------------Antimony.................................... 0.005 0.002Lead........................................ 0.0007 0.0004Oil and grease.............................. 0.036 0.022TSS......................................... 0.073 0.034pH.......................................... ............ (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(o) Degreasing spent solvents--subpart A--BPT. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2884, Jan. 22, 1986]