Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 274 - Nonferrous metals manufacturing
Subchapter XXXII - Secondary Uranium
Section NR 274.324 - New source performance standards

Current through August 26, 2024

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

Table 32-19

Secondary Uranium Refinery Sump Filtrate

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium processed in the refinery

Chromium

27.14

11.00

Copper

93.88

44.74

Nickel

40.34

27.14

Fluoride

2,567.00

1,459.00

Total suspended solids

1,100.00

880.10

pH

(1)

(1)

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

Table 32-20

Secondary Uranium Slag Leach Reslurry

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium processed in the refinery

Chromium

1.689

0.685

Copper

5.844

2.785

Nickel

2.511

1.689

Fluoride

159.800

90.860

Total suspended solids

68.490

54.790

pH

(1)

(1)

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

Table 32-21

Secondary Uranium Solvent Extraction Raffinate Filtrate

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium processed in the refinery

Chromium

2.357

0.955

Copper

8.152

3.885

Nickel

3.503

2.357

Fluoride

222.900

126.700

Total suspended solids

95.540

76.430

pH

(1)

(1)

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

Table 32-22

Secondary Uranium Digestion Wet Air Pollution Control

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium processed in the refinery

Chromium

0.000

0.000

Copper

0.000

0.000

Nickel

0.000

0.000

Fluoride

0.000

0.000

Total suspended solids

0.000

0.000

pH

(1)

(1)

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

Table 32-23

Secondary Uranium Evaporation and Denitration Wet Air Pollution Control

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium trioxide produced

Chromium

0.000

0.000

Copper

0.000

0.000

Nickel

0.000

0.000

Fluoride

0.000

0.000

Total suspended solids

0.000

0.000

pH

(1)

(1)

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

Table 32-24

Secondary Uranium Hypofluorination Alkaline Scrubber

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium tetrafluoride produced

Chromium

0.007

0.003

Copper

0.026

0.012

Nickel

0.011

0.025

Fluoride

0.700

0.398

Total suspended solids

0.300

0.240

pH

(1)

(1)

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

Table 32-25

Secondary Uranium Hypofluorination Water Scrubber

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium tetrafluoride produced

Chromium

0.000

0.000

Copper

0.000

0.000

Nickel

0.000

0.000

Fluoride

0.000

0.000

Total suspended solids

0.000

0.000

pH

(1)

(1)

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

Table 32-26

Secondary Uranium Magnesium Reduction and Casting Floor Wash

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium produced by magnesium reduction

Chromium

0.011

0.005

Copper

0.039

0.018

Nickel

0.017

0.011

Fluoride

1.054

0.599

Total suspended solids

0.452

0.361

pH

(1)

(1)

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

Table 32-27

Secondary Uranium Laundry Wastewater

NSPS

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of uranium produced by magnesium reduction

Chromium

0.036

0.014

Copper

0.123

0.059

Nickel

0.053

0.036

Fluoride

3.360

1.910

Total suspended solids

1.440

1.152

pH

(1)

(1)

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

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