Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:
(a) Smelter wet air pollution control.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/troy ounce of gold and
silver smelted
---------------Lead........................................ 0.364 0.169Mercury..................................... 0.195 0.078Silver...................................... 0.377 0.156Zinc........................................ 1.326 0.546Gold........................................ 0.130 ............------------------------------------------------------------------------
(b) Silver chloride reduction spent solution.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/troy ounce of silver
reduced in solution
---------------Lead........................................ 0.112 0.052Mercury..................................... 0.060 0.024Silver...................................... 0.116 0.048Zinc........................................ 0.408 0.168
Gold........................................ 0.040 ............------------------------------------------------------------------------
(c) Electrolytic cells wet air pollution control.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/troy ounce of gold
refined electrolytically
---------------Lead........................................ 5.544 2.574Mercury..................................... 2.970 1.188Silver...................................... 5.742 2.376Zinc........................................ 20.200 8.316Gold........................................ 1.980 ............------------------------------------------------------------------------
(d) Electrolyte preparation wet air pollution control.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/troy ounce of silver in
electrolyte produced
---------------Lead........................................ 0.014 0.007Mercury..................................... 0.008 0.003Silver...................................... 0.015 0.006Zinc........................................ 0.051 0.021Gold........................................ 0.005 ............------------------------------------------------------------------------
(e) Calciner Wet Air Pollution Control.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of mercury
condensed
---------------Lead........................................ 6.160 2.860Mercury..................................... 3.300 1.320Silver...................................... 6.380 2.640Zinc........................................ 22.440 9.240Gold........................................ 2.200 ............------------------------------------------------------------------------
(f) Calcine quench water.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of mercury
condensed
---------------Lead........................................ 4.928 2.288Mercury..................................... 2.640 1.056Silver...................................... 5.104 2.112Zinc........................................ 17.950 7.392Gold........................................ 1.760 ............------------------------------------------------------------------------
(g) Calciner stack gas contact cooling water.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of mercury
condensed
---------------Lead........................................ 1.162 0.540Mercury..................................... 0.623 0.249Silver...................................... 1.204 0.498Zinc........................................ 4.233 1.743Gold........................................ 0.415 ............------------------------------------------------------------------------
(h) Condenser blowdown.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of mercury
condensed
---------------Lead........................................ 3.864 1.794Mercury..................................... 2.070 0.828Silver...................................... 4.002 1.656Zinc........................................ 14.080 5.796Gold........................................ 1.380 ............------------------------------------------------------------------------
(i) Mercury cleaning bath water.
BAT Limitations for the Primary Precious Metals and Mercury Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of mercury
condensed
---------------Lead........................................ 0.392 0.182Mercury..................................... 0.210 0.084Silver...................................... 0.406 0.168Zinc........................................ 1.428 0.588
Gold........................................ 0.140 ............------------------------------------------------------------------------