40 CFR 421.234: Standards of performance for new sources.

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

(a) Raw Material Dust Control.

NSPS for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material

Copper 0.099 0.047

Nickel 0.042 0.028

Ammonia (as N) 10.260 4.512

Cobalt 0.011 0.005

Total suspended solids 1.155 0.924

pH 1 1

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

(b) Nickel wash water.

NSPS for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of nickel powder washed

Copper 0.043 0.021

Nickel 0.019 0.013

Ammonia (as N) 4.515 1.985

Cobalt 0.005 0.002

Total suspended solids 0.508 0.406

pH 1 1

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

(c) Nickel reduction decant.

NSPS for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of nickel produced

Copper 16.250 7.744

Nickel 6.982 4.697

Ammonia (as N) 1,692.000 743.900

Cobalt 1.777 0.889

Total suspended solids 190.400 152.300

pH 1 1

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

(d) Cobalt reduction decant.

NSPS for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of cobalt produced

Copper 27.390 13.050

Nickel 11.770 7.917

Ammonia (as N) 2,852.000 1,254.000

Cobalt 2.996 1.498

Total suspended solids 321.000 256.800

pH 1 1

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