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, 1985 achieve the following pretreatment standards for existing sources (PSES). The mass of wastewater pollutants in precious metals forming process wastewater introduced into a POTW shall not exceed the following values:
(a) Rolling spent neat oils--subpart D--PSES. There shall be no discharge of process wastewater pollutants.
(b) Rolling spent emulsions.
Subpart D--PSES------------------------------------------------------------------------
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 0.013------------------------------------------------------------------------
(c) Drawing spent neat oils--subpart D--PSES. There shall be no discharge of process wastewater pollutants.
(d) Drawing spent emulsions.
Subpart D--PSES------------------------------------------------------------------------
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..................................... 0.016 0.007Copper...................................... 0.091 0.048Cyanide..................................... 0.014 0.006Silver...................................... 0.020 0.008------------------------------------------------------------------------
(e) Drawing spent soap solutions.
Subpart D--PSES------------------------------------------------------------------------
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 0.0006------------------------------------------------------------------------
(f) Metal powder production atomization wastewater.
Subpart D--PSES------------------------------------------------------------------------
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 1.14------------------------------------------------------------------------
(g) Heat treatment contact cooling water.
Subpart D--PSES------------------------------------------------------------------------
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 0.071------------------------------------------------------------------------
(h) Semi-continuous and continuous casting contact cooling water.
Subpart D--PSES------------------------------------------------------------------------
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 0.175------------------------------------------------------------------------
(i) Stationary casting contact cooling water--subpart D--PSES. There shall be no discharge of process wastewater pollutants.
(j) Direct chill casting contact cooling water.
Subpart D--PSES------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any one 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 0.184------------------------------------------------------------------------
(k) Shot casting contact cooling water.
Subpart D--PSES------------------------------------------------------------------------
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 0.063------------------------------------------------------------------------
(l) Wet air pollution control scrubber blowdown--subpart D--PSES. There shall be no discharge of process wastewater pollutants.
(m) Pressure bonding contact cooling water.
Subpart D--PSES------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (pounds per
million off-pounds) of
precious metal and base
metal pressure bonded
---------------------------Cadmium..................................... 0.029 0.013Copper...................................... 0.159 0.084Cyanide..................................... 0.024 0.010Silver...................................... 0.034 0.014------------------------------------------------------------------------
(n) Surface treatment spent baths.
Subpart D--PSES------------------------------------------------------------------------
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 0.017------------------------------------------------------------------------
(o) Surface treatment rinse.
Subpart D--PSES------------------------------------------------------------------------
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 0.105------------------------------------------------------------------------
(p) Alkaline cleaning spent baths.
Subpart D--PSES------------------------------------------------------------------------
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 0.010------------------------------------------------------------------------
(q) Alkaline cleaning rinse.
Subpart D--PSES------------------------------------------------------------------------
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 1.12Cyanide..................................... 0.325 0.135Silver...................................... 0.459 0.191------------------------------------------------------------------------
(r) Alkaline cleaning prebonding wastewater.
Subpart D--PSES------------------------------------------------------------------------
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...................................... 2.210 1.16Cyanide..................................... 0.337 0.139Silver...................................... 0.476 0.197------------------------------------------------------------------------
(s) Tumbling or burnishing wastewater.
Subpart D--PSES------------------------------------------------------------------------
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...................................... 2.300 1.21Cyanide..................................... 0.351 0.145Silver...................................... 0.496 0.206------------------------------------------------------------------------
(t) Sawing or grinding spent neat oils--subpart D--PSES. There shall be no discharge of process wastewater pollutants.
(u) Sawing or grinding spent emulsions.
Subpart D--PSES------------------------------------------------------------------------
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 0.016------------------------------------------------------------------------
(v) Degreasing spent solvents--subpart D--PSNS. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]