Any new source subject to this subpart must achieve the following new source performance standards (NSPS):
(a) Rolling Spent Neat Oils--subpart D--NSPS. There shall be no discharge of process wastewater pollutants.
(b) Rolling spent emulsions.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals rolled
with emulsions
---------------------------Cadmium..................................... 0.026 0.012Copper...................................... 0.147 0.077Cyanide..................................... 0.023 0.010Silver...................................... 0.032 0.013Oil and grease.............................. 1.54 0.925TSS......................................... 3.16 1.51pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(c) Drawing spent neat oils--subpart D--NSPS. There shall be no discharge of process wastewater pollutants.
(d) Drawing spent emulsions.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals drawn with
emulsions
---------------------------Cadmium..................................... 0.017 0.007Copper...................................... 0.091 0.048Cyanide..................................... 0.014 0.006Silver...................................... 0.020 0.008Oil and grease.............................. 0.950 0.570TSS......................................... 1.95 0.927pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(e) Drawing spent soap solutions.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals drawn with
soap solutions
---------------------------Cadmium..................................... 0.001 0.0005Copper...................................... 0.006 0.003Cyanide..................................... 0.0009 0.0004Silver...................................... 0.002 0.0006Oil and grease.............................. 0.063 0.038TSS......................................... 0.128 0.061pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(f) Metal powder production atomization wastewater.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals powder wet
atomized
---------------------------Cadmium..................................... 2.27 1.00Copper...................................... 12.7 6.68Cyanide..................................... 1.94 0.802Silver...................................... 2.74 1.14Oil and grease.............................. 134 80.2TSS......................................... 274 131pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(g) Heat treatment contact cooling water.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals heat
treated
---------------------------Cadmium..................................... 0.142 0.063Copper...................................... 0.793 0.417Cyanide..................................... 0.121 0.050Silver...................................... 0.171 0.071Oil and grease.............................. 8.34 5.01TSS......................................... 17.1 8.13pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(h) Semi-continuous and continuous casting contact cooling water.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals cast by
the semi-continuous or
continuous method
---------------------------Cadmium..................................... 0.350 0.155Copper...................................... 1.96 1.03Cyanide..................................... 0.299 0.124Silver...................................... 0.423 0.175Oil and grease.............................. 20.6 12.4TSS......................................... 42.3 20.1pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(i) Stationary casting contact cooling water--subpart D--NSPS. There shall be no discharge of process wastewater pollutants.
(j) Direct chill casting contact cooling water.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals cast by
the direct chill method
---------------------------Cadmium..................................... 0.367 0.162Copper...................................... 2.05 1.08Cyanide..................................... 0.313 0.130Silver...................................... 0.443 0.184Oil and grease.............................. 21.6 13.0TSS......................................... 44.3 21.1pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(k) Shot casting contact cooling water.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals shot cast
---------------------------Cadmium..................................... 0.125 0.055Copper...................................... 0.698 0.367Cyanide..................................... 0.107 0.044Silver...................................... 0.151 0.063Oil and grease.............................. 7.34 4.41TSS......................................... 15.1 7.16pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(l) Wet air pollution control scrubber blowdown--subpart D--NSPS. There shall be no discharge of process wastewater pollutants.
(m) Pressure bonding contact cooling water.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals and base
metal pressure bonded
---------------------------Cadmium..................................... 0.029 0.013Copper...................................... 0.159 0.084Cyanide..................................... 0.024 0.010Silver...................................... 0.034 0.014Oil and grease.............................. 1.67 1.00TSS......................................... 3.43 1.63pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(n) Surface treatment spent baths.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals surface
treated
---------------------------Cadmium..................................... 0.033 0.015Copper...................................... 0.183 0.097Cyanide..................................... 0.028 0.012Silver...................................... 0.040 0.017Oil and grease.............................. 1.93 1.16TSS......................................... 3.95 1.88pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(o) Surface treatment rinse.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals surface
treated
---------------------------
Cadmium..................................... 0.210 0.093Copper...................................... 1.17 0.616Cyanide..................................... 0.179 0.074Silver...................................... 0.253 0.105Oil and grease.............................. 12.3 7.39TSS......................................... 25.3 12.0pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(p) Alkaline cleaning spent baths.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals alkaline
cleaned
---------------------------
Cadmium..................................... 0.021 0.009Copper...................................... 0.114 0.060Cyanide..................................... 0.018 0.007Silver...................................... 0.025 0.010Oil and grease.............................. 1.20 0.720TSS......................................... 2.46 1.17pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(q) Alkaline cleaning rinse.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals alkaline
cleaned
---------------------------
Cadmium..................................... 0.381 0.168Copper...................................... 2.13 1.112Cyanide..................................... 0.325 0.135Silver...................................... 0.459 0.191Oil and grease.............................. 22.4 13.5TSS......................................... 45.9 21.9pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(r) Alkaline cleaning pre-bonding wastewater.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals and base
metal cleaned prior to
bonding
---------------------------
Cadmium..................................... 0.400 0.174Copper...................................... 2.21 1.16Cyanide..................................... 0.337 0.139Silver...................................... 0.476 0.197Oil and grease.............................. 23.2 13.9TSS......................................... 47.6 22.6pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(s) Tumbling or burnishing wastewater.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals tumbled or
burnished
---------------------------Cadmium..................................... 0.412 0.182Copper...................................... 2.30 1.21Cyanide..................................... 0.351 0.145Silver...................................... 0.496 0.206Oil and grease.............................. 24.2 14.5TSS......................................... 49.6 23.6pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(t) Sawing or grinding spent neat oils--subpart D--NSPS. There shall be no discharge of process wastewater pollutants.
(u) Sawing or grinding spent emulsions.
Subpart D--NSPS------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metals sawed or
ground with emulsions
---------------------------Cadmium..................................... 0.032 0.014Copper...................................... 0.178 0.094Cyanide..................................... 0.027 0.011Silver...................................... 0.038 0.016Oil and grease.............................. 1.87 1.12TSS......................................... 3.83 1.82pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(v) Degreasing spent solvents--subpart D--NSPS. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]