CFR

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421.194—Standards of performance for new sources.

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

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

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