Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in primary zinc process wastewater introduced into a POTW shall not exceed the following values: (a) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control. PSES 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 Zinc 1.702 .701 (b) Subpart H—Preleach of Zinc Concentrates. PSES 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 Zinc .919 .378 (c) Subpart H—Leaching Wet Air Pollution Control. PSES 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 Zinc .000 .000 (d) Subpart H—Electrolyte Bleed Wastewater. PSES 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 Zinc .441 .182 (e) Subpart H—Cathode and Anode Wash Wastewater. PSES 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 Zinc .766 .315 (f) Subpart H—Casting Wet Air Pollution Control. PSES 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 Zinc .262 .108 (g) Subpart H—Casting Contact Cooling. PSES 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 Zinc .185 .076 (h) Subpart H—Cadmium Plant Wastewater. PSES 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 Zinc 6.295 2.592