421.73—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:
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of sinter production
Lead 100.800 46.800
Zinc 367.200 151.200
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced
Lead .000 .000
Zinc .000 .000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced
Lead .000 .000
Zinc .000 .000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of slag, speiss, or matte granulated
Lead 1,612.000 748.400
Zinc 5,872.000 2,418.000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of dross reverberatory furnace production
Lead .000 .000
Zinc .000 .000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of blast furnance lead bullion produced
Lead .000 .000
Zinc .000 .000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of hard lead produced
Lead .000 .000
Zinc .000 .000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of hard lead produced
Lead .000 .000
Zinc .000 .000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of lead bullion produced
Lead .000 .000
Zinc .000 .000
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of lead bullion produced
Lead .924 .429
Zinc 3.366 1.386
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of lead bullion produced
Lead 1.484 .689
Zinc 5.406 2.226
BAT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kkg (pounds per billion pounds) of lead bullion produce
Lead 4.340 2.015
Zinc 15.810 6.510