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

(a) Displacement Supernatant.

NSPS for the Secondary Indium Subcategory

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of indium metal produced
Cadmium 2.105 0.929
Lead 2.600 1.238
Zinc 9.037 3.776
Indium 2.724 1.114
Total suspended solids 253.800 120.700
pH (1) (1)

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

(b) Spent Electrolyte.

NSPS for the Secondary Indium Subcategory

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of cathode indium produced
Cadmium 12.170 5.370
Lead 15.040 7.160
Zinc 52.270 21.840
Indium 15.750 6.444
Total suspended solids 1,468.000 698.100
pH (1) (1)

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


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