Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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 practicable technology currently available: (a) Still liquor. BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium chlorinated Arsenic 131.700 58.590 Lead 26.460 12.600 Zinc 91.980 38.430 Fluoride 2,205.000 1,254.000 Total suspended solids 2,583.000 1,229.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (b) Chlorinator wet air pollution control. BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium chlorinated Arsenic 27.530 12.250 Lead 5.531 2.634 Zinc 19.230 8.034 Fluoride 461.000 262.100 Total suspended solids 540.000 256.800 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (c) Germanium hydrolysis filtrate. BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium hydrolyzed Arsenic 39.440 17.550 Lead 7.925 3.774 Zinc 27.550 11.510 Fluoride 660.500 375.500 Total suspended solids 773.700 368.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (d) Acid wash and rinse water. BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium washed Arsenic 325.500 144.800 Lead 65.400 31.140 Zinc 227.400 94.990 Fluoride 5,450.000 3,099.000 Total suspended solids 6,385.000 3,037.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (e) Gallium hydrolysis filtrate. BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of gallium hydrolyzed Arsenic 70.450 31.350 Lead 14.160 6.742 Zinc 49.220 20.560 Fluoride 1,180.000 670.800 Total suspended solids 1,382.000 657.300 pH ( 1 ) 1 ) 1 Within the range of 7.5 to 10.0 at all times. (f) Solvent extraction raffinate. BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of gallium produced by solvent extraction Arsenic 39.330 17.500 Lead 7.904 3.764 Zinc 27.480 11.480 Fluoride 658.700 374.500 Total suspended solids 771.600 367.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times.