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) Raw material dust control. BAT Limitations for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material Copper 0.099 0.047 Nickel 0.042 0.028 Ammonia (as N) 10.260 4.512 Cobalt 0.011 0.005 (b) Nickel wash water. BAT Limitations for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of nickel powder washed Copper 0.043 0.021 Nickel 0.019 0.013 Ammonia (as N) 4.515 1.985 Cobalt 0.005 0.002 (c) Nickel reduction decant. BAT Limitations for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of nickel produced Copper 16.250 7.744 Nickel 6.982 4.697 Ammonia (as N) 1,692.000 743.900 Cobalt 1.777 0.889 (d) Cobalt reduction decant. BAT Limitations for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of cobalt produced Copper 27.390 13.050 Nickel 11.770 7.917 Ammonia (as N) 2,852.000 1,254.000 Cobalt 2.996 1.498 [50 FR 38359, Sept. 20, 1985; 50 FR 41144, Oct. 9, 1985]