View all text of Subpart P [§ 421.180 - § 421.187]

§ 421.185 - 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 and secondary germanium and gallium process wastewater introduced into a POTW must not exceed the following values:

(a) Still liquor.

PSES for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium chlorinated Arsenic131.7058.59 Lead26.4612.60 Zinc91.9838.43 Fluoride2,205.001,254.00

(b) Chlorinator wet air pollution control.

PSES for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium chlorinated Arsenic27.53012.250 Lead5.5312.634 Zinc19.2308.034 Fluoride461.000262.100

(c) Germanium hydrolysis filtrate.

PSES for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium hydrolyzed Arsenic39.44017.550 Lead7.9253.774 Zinc27.55011.510 Fluoride660.500375.500

(d) Acid wash and rinse water.

PSES for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of germanium washed Arsenic325.50144.80 Lead65.4031.14 Zinc227.4094.99 Fluoride5,450.003,099.00

(e) Gallium hydrolysis filtrate.

PSES for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of gallium hydrolyzed Arsenic70.45031.350 Lead14.1606.742 Zinc49.22020.560 Fluoride1,180.000670.800

(f) Solvent extraction raffinate.

PSES for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of gallium produced by solvent extraction Arsenic39.33017.500 Lead7.9043.764 Zinc27.48011.480 Fluoride658.700374.500