40 C.F.R. § 421.234

Current through May 31, 2024
Section 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
Copper0.0990.047
Nickel0.0420.028
Ammonia (as N)10.2604.512
Cobalt0.0110.005
Total suspended solids1.1550.924
pH11

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
Copper0.0430.021
Nickel0.0190.013
Ammonia (as N)4.5151.985
Cobalt0.0050.002
Total suspended solids0.5080.406
pH11

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
Copper16.2507.744
Nickel6.9824.697
Ammonia (as N)1,692.000743.900
Cobalt1.7770.889
Total suspended solids190.400152.300
pH11

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
Copper27.39013.050
Nickel11.7707.917
Ammonia (as N)2,852.0001,254.000
Cobalt2.9961.498
Total suspended solids321.000256.800
pH11

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

40 C.F.R. §421.234