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) Leach tailings. BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced Arsenic 40.778 18.145 Chromium 8.585 3.512 Lead 8.195 3.902 Nickel 37.460 24.779 Iron 23.410 11.902 Molybdenum [Reserved] [Reserved] Ammonia (as N) 8078.000 3551.000 Total Suspended Solids 799.950 380.460 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (b) Molybdenum filtrate solvent extraction raffinate. BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced Arsenic 121.720 54.162 Chromium 25.625 10.483 Lead 24.460 11.648 Nickel 111.819 73.964 Iron 69.887 35.526 Molybdenum [Reserved] [Reserved] Ammonia (as N) 24114.000 10600.000 Total Suspended Solids 2387.800 1135.660 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (c) Vanadium decomposition wet air pollution control. BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of vanadium produced by decomposition Arsenic 0.000 0.000 Chromium 0.000 0.000 Lead 0.000 0.000 Nickel 0.000 0.000 Iron 0.000 0.000 Molybdenum 0.000 0.000 Ammonia (as N) 0.000 0.000 Total suspended solids 0.000 0.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (d) Molybdenum drying wet air pollution control. BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of molybdenum produced Arsenic 0.000 0.000 Chromium 0.000 0.000 Lead 0.000 0.000 Nickel 0.000 0.000 Iron 0.000 0.000 Molybdenum 0.000 0.000 Ammonia (as N) 0.000 0.000 Total suspended solids 0.000 0.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (e) Pure Grade Molybdenum. BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of pure molybdenum produced Arsenic 48.655 21.650 Chromium 10.243 4.190 Lead 9.778 4.656 Nickel 44.698 29.566 Iron 27.936 14.201 Molybdenum [Reserved] [Reserved] Ammonia (as N) 9638.000 4237.000 Total Suspended Solids 954.480 453.960 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. [50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31703, Aug. 3, 1990]