Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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) Sodium Antimonate Autoclave Wastewater. BAT Limitations for the Primary Antimony Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of antimony contained in sodium antimonate product Antimony 30.150 13.440 Arsenic 21.720 9.687 Mercury 2.344 0.937 (b) Fouled Anolyte. BAT Limitations for the Primary Antimony Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg pounds per million pounds of antimony metal produced by electrowinning Antimony 30.150 13.440 Arsenic 21.720 9.687 Mercury 2.344 0.937 (c) Cathode Antimony Wash Water BAT Limitations for the Primary Antimony Subcategory Pollutant of pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of antimony metal produced by electrowinning Antimony 60.310 26.870 Arsenic 43.430 19.370 Mercury 4.687 1.875