§ 421.266 — Pretreatment Standards For New Sources

Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in secondary precious metals process wastewater introduced into a POTW shall not exceed the following values:

(a) Furnace wet air pollution control.

PSNS for the Secondary Precious Metals Subcategory

(b) Raw material granulation.

PSNS for the Secondary Precious Metals Subcategory

(c) Spent plating solutions.

PSNS for the Secondary Precious Metals Subcategory

(d) Spent cyanide stripping solutions.

PSNS for the Secondary Precious Metals Subcategory

(e) Refinery Wet Air Pollution Control.

1

1 This allowance applies to either acid or alkaline wet air pollution control scrubbers. If both acid and alkaline wet air pollution control scrubbers are present in a particular facility the same allowance applies to each.

PSNS for the Secondary Precious Metals Subcategory

(f) Gold solvent extraction raffinate and wash water.

PSNS for the Secondary Precious Metals Subcategory

(g) Gold spent electrolyte.

PSNS for the Secondary Precious Metals Subcategory

(h) Gold precipitation and filtration.

PSNS for the Secondary Precious Metals Subcategory

(i) Platinum precipitation and filtration.

PSNS for the Secondary Precious Metals Subcategory

(j) Palladium precipitation and filtration.

PSNS for the Secondary Precious Metals Subcategory

(k) Other platinum group metals precipitation and filtration.

PSNS for the Secondary Precious Metals Subcategory

(l) Spent solution from PGC salt production.

PSNS for the Secondary Precious Metals Subcategory

(m) Equipment and floor wash.

PSNS for the Secondary Precious Metals Subcategory

(n) Preliminary treatment.

PSNS for the Secondary Precious Metals Subcategory