Collapse to view only § 421.195 - Pretreatment standards for existing sources.

§ 421.190 - Applicability: Description of the secondary indium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of indium at secondary indium facilities processing spent electrolyte solutions and scrap indium metal raw materials.

§ 421.191 - Specialized definitions.

For the purpose of this subpart the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

§§ 421.192-421.193 - §[Reserved]

§ 421.194 - Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Displacement Supernatant.

NSPS for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of indium metal produced Cadmium2.1050.929 Lead2.6001.238 Zinc9.0373.776 Indium2.7241.114 Total suspended solids253.800120.700 pH( 1)( 1)

1 Within the range of 7.5 to 10.0 at all times.

(b) Spent Electrolyte.

NSPS for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of cathode indium produced Cadmium12.1705.370 Lead15.0407.160 Zinc52.27021.840 Indium15.7506.444 Total suspended solids1,468.000698.100 pH( 1)( 1)

1 Within the range of 7.5 to 10.0 at all times.

§ 421.195 - 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 secondary indium process wastewater introduced into a POTW must not exceed the following values:

(a) Displacement Supernatant.

PSES for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of indium metal produced Cadmium2.1050.929 Lead2.6001.238 Zinc9.0373.776 Indium2.7241.114

(b) Spent Electrolyte.

PSES for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of cathode indium produced Cadmium12.1705.370 Lead15.0407.160 Zinc52.27021.840 Indium15.7506.444

§ 421.196 - 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 indium process wastewater introduced into a POTW should not exceed the following values:

(a) Displacement Supernatant.

PSNS for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of indium metal produced Cadimum2.1050.929 Lead2.6001.238 Zinc9.0373.776 Indium2.7241.114

(b) Spent Electrolyte.

PSNS for the Secondary Indium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of cathode indium produced Cadmium12.1705.370 Lead15.0407.160 Zinc52.27021.840 Indium15.7506.444

§ 421.197 - [Reserved]