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) Molybdenum sulfide leachate. BAT Limitations for the Primary Molybdenum and Rhenium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds million pounds) of molybdenum sulfide leached Arsenic 0.644 0.287 Lead 0.130 0.060 Nickel 0.255 0.171 Selenium 0.380 0.171 Molybdenum [Reserved] [Reserved] Ammonia (as N) 61.720 27.130 Fluoride 16.210 9.214 (b) Roaster SO 2 scrubber. BAT Limitations for the Primary Molybdenum and Rhenium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per/million pounds) of molybdenum sulfide roasted Arsenic 2.334 1.041 Lead 0.470 0.218 Nickel 0.924 0.621 Selenium 1.377 0.621 Molybdenum [Reserved] [Reserved] Ammonia (as N) 223.800 98.390 Fluoride 58.770 33.410 (c) Molybdic oxide leachate. BAT Limitations for the Primary Molybdenum and Rhenium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per/million pounds) of molybdenum contained in molybdic oxide leached Arsenic 16.100 7.182 Lead 3.244 1.506 Nickel 6.371 4.286 Selenium 9.499 4.286 Molybdenum [Reserved] [Reserved] Ammonia (as N) 1,544.000 678.800 Fluoride 405.400 230.500 (d) Hydrogen reduction furnace scrubber. BAT Limitations for the Primary Molybdenum and Rhenium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per/million pounds) of molybdenum metal powder produced Arsenic 3.183 1.420 Lead 0.641 0.298 Nickel 1.260 0.847 Selenium 1.878 0.847 Molybdenum [Reserved] [Reserved]. Ammonia (as N) 305.300 134.200 Fluoride 80.150 45.570 (e) Depleted rhenium scrubbing solution. BAT Limitations for the Primary Molybdenum and Rhenium Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per/million pounds) of molybdenum sulfide roasted Arsenic 0.995 0.444 Lead 0.201 0.093 Nickel 0.394 0.265 Selenium 0.587 0.265 Molybdenum [Reserved] [Reserved]. Ammonia (as N) 95.440 41.960 Fluoride 25.060 14.250 [50 FR 38355, Sept. 20, 1985, as amended at 55 FR 31701, 31702, Aug. 3, 1990]