40 CFR 421.83: 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) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of zinc reduced

Cadmium .334 .134

Copper 2.135 1.018

Lead .467 .217

Zinc 1.702 .701

(b) Subpart H—Preleach of Zinc Concentrates.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of concentrate leached

Cadmium .180 .072

Copper 1.153 .550

Lead .252 .117

Zinc .919 .378

(c) Subpart H—Leaching Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of zinc processed through leaching

Cadmium .000 .000

Copper .000 .000

Lead .000 .000

Zinc .000 .000

(d) Subpart H—Electrolyte Bleed Wastewater.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of cathode zinc produced

Cadmium .086 .035

Copper .553 .264

Lead .121 .056

Zinc .441 .182

(e) Subpart H—Cathode and Anode Wash Wastewater.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of cathode zinc produced

Cadmium .150 .060

Copper .961 .458

Lead .210 .098

Zinc .766 .315

(f) Subpart H—Casting Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of zinc cast

Cadmium .051 .021

Copper .329 .157

Lead .072 .033

Zinc .262 .108

(g) Subpart H—Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of zinc cast

Cadmium .036 .014

Copper .232 .110

Lead .051 .024

Zinc .185 .076

(h) Subpart H—Cadmium Plant Wastewater.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of cadmium produced

Cadmium 1.234 .494

Copper 7.899 3.765

Lead 1.728 .802

Zinc 6.295 2.592