40 C.F.R. § 421.85

Current through September 30, 2024

Section 421.85 - 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

40 C.F.R. §421.85