40 C.F.R. § 421.324

Current through September 30, 2024
Section 421.324 - Standards of performance for new sources

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

(a) Refinery sump filtrate.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium processed in the refinery
Chromium (total)27.1411.00
Copper93.8844.74
Nickel40.3427.14
Fluoride2,567.001,459.00
Total suspended solids1,100.00880.10
pH(1)(1)

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

(b) Slag leach reslurry.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium processed in the refinery
Chromium (total)1.6890.685
Copper5.8442.785
Nickel2.5111.689
Fluoride159.80090.860
Total suspended solids68.49054.790
pH(1)(1)

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

(c) Solvent extraction raffinate filtrate.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium processed in the refinery
Chromium (total)2.3570.955
Copper8.1523.885
Nickel3.5032.357
Fluoride222.900126.700
Total suspended solids95.54076.430
pH(1)(1)

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

(d) Digestion wet air pollution control.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium processed in the refinery
Chromium (total)0.0000.000
Copper0.0000.000
Nickel0.0000.000
Fluoride0.0000.000
Total suspended solids0.0000.000
pH(1)(1)

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

(e) Evaporation and denitration wet air pollution control

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium trioxide produced
Chromium (total)0.0000.000
Copper0.0000.000
Nickel0.0000.000
Fluoride0.0000.000
Total suspended solids0.0000.000
pH(1)(1)

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

(f) Hydrofluorination alkaline scrubber.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium tetrafluoride produced
Chromium (total)0.0070.003
Copper0.0260.012
Nickel0.0110.007
Fluoride0.7000.398
Total suspended solids0.3000.240
pH(1)(1)

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

(g) Hydrofluorination water scrubber.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium tetrafluoride produced
Chromium (total)0.0000.000
Copper0.0000.000
Nickel0.0000.000
Fluoride0.0000.000
Total suspended solids0.0000.000
pH(1)(1)

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

(h) Magnesium reduction and casting floor wash.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium produced by magnesium reduction
Chromium (total)0.0110.005
Copper0.0390.018
Nickel0.0170.011
Fluoride1.0540.599
Total suspended solids0.4520.361
pH(1)(1)

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

(i) Laundry wastewater.

NSPS for the Secondary Uranium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of uranium produced by magnesium reduction
Chromium (total)0.0360.014
Copper0.1230.059
Nickel0.0530.036
Fluoride3.3601.910
Total suspended solids1.4401.152
pH(1)(1)

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

40 C.F.R. §421.324