Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
All TitlesTitle 40Chapter IPart 471Subpart G - Subpart G—Uranium Forming Subcategory
View all text of Subpart G [§ 471.70 - § 471.76]
§ 471.73 - New source performance standards (NSPS).

Any new source subject to this subpart must achieve the following new source performance standards (NSPS). The mass of pollutants in the uranium forming process wastewater shall not exceed the following values:

(a) Extrusion spent lubricants—subpart G—NSPS. There shall be no discharge of process wastewater pollutants.

(b) Extrusion tool contact cooling water.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium extruded
Cadmium0.0070.003
Chromium0.0130.005
Copper0.0440.021
Lead0.0100.005
Nickel0.0190.013
Fluoride2.050.908
Molybdenum0.1730.077
Oil and grease0.3440.344
TSS0.5160.413
pH( 1)( 1)

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

(c) Heat treatment contact cooling water.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of extruded or forged uranium heat treated
Cadmium0.0060.003
Chromium0.0120.005
Copper0.0400.019
Lead0.0090.004
Nickel0.0170.012
Fluoride1.860.827
Molybdenum0.1580.070
Oil and grease0.3130.313
TSS0.4700.376
pH( 1)( 1)

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

(d) Forging spent lubricants—subpart G—NSPS. There shall be no discharge of process wastewater pollutants.

(e) Surface treatment spent baths.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium surface treated
Cadmium0.0060.002
Chromium0.0100.004
Copper0.0350.017
Lead0.0080.004
Nickel0.0150.010
Fluoride1.620.718
Molybdenum0.1370.061
Oil and grease0.2720.272
TSS0.4080.327
pH( 1)( 1)

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

(f) Surface treatment rinse.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium surface treated
Cadmium0.0680.027
Chromium0.1250.051
Copper0.4320.206
Lead0.0950.044
Nickel0.1860.125
Fluoride20.18.90
Molybdenum1.700.752
Oil and grease3.373.37
TSS5.064.05
pH( 1)( 1)

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

(g) Wet air pollution control scrubber blowdown.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium surface treated
Cadmium0.00070.0003
Chromium0.0010.0005
Copper0.0050.002
Lead0.0010.0005
Nickel0.0020.001
Fluoride0.2080.092
Molybdenum0.0180.008
Oil and grease0.0350.035
TSS0.0530.042
pH( 1)( 1)

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

(h) Sawing or grinding spent emulsions.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium sawed or ground with emulsions
Cadmium0.0010.0005
Chromium0.0020.0009
Copper0.0070.004
Lead0.0020.0008
Nickel0.0030.002
Fluoride0.3380.150
Molybdenum0.0290.013
Oil and grease0.0570.057
TSS0.0850.068
pH( 1)( 1)

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

(i) Sawing or grinding contact cooling water.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium sawed or ground with contact cooling water
Cadmium0.0330.013
Chromium0.0610.025
Copper0.2110.101
Lead0.0460.022
Nickel0.0910.061
Fluoride9.824.36
Molybdenum0.8300.368
Oil and grease1.651.65
TSS2.481.98
pH( 1)( 1)

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

(j) Sawing or grinding rinse.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of sawed or ground uranium rinsed
Cadmium0.0010.0004
Chromium0.0020.0007
Copper0.0060.003
Lead0.0020.0006
Nickel0.0030.002
Fluoride0.2770.123
Molybdenum0.0240.011
Oil and grease0.0470.047
TSS0.0700.056
pH( 1)( 1)

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

(k) Area cleaning rinse.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium formed
Cadmium0.0090.004
Chromium0.0160.007
Copper0.0550.026
Lead0.0120.006
Nickel0.0240.016
Fluoride2.561.14
Molybdenum0.2160.096
Oil and grease0.4290.429
TSS0.6440.515
pH( 1)( 1)

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

(l) Drum washwater.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of uranium formed
Cadmium0.0090.004
Chromium0.0170.007
Copper0.0570.027
Lead0.0130.006
Nickel0.0250.017
Fluoride2.641.17
Molybdenum0.2230.099
Oil and grease0.4430.443
TSS0.6650.532
pH( 1)( 1)

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

(m) Laundry washwater.

Subpart G—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/employee—day
Cadmium5.242.10
Chromium9.703.93
Copper33.616.0
Lead7.343.41
Nickel14.49.70
Fluoride1,560692
Molybdenum13258.4
Oil and grease262262
TSS393315
pH( 1)( 1)

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

(n) Degreasing spent solvents—subpart G—NSPS. There shall be no discharge of process waster pollutants.

[50 FR 34270, Aug. 23, 1985; 51 FR 2888, Jan. 22, 1986]
authority: Secs. 301, 304(b), (c), (e), and (g), 306(b) and (c), 307, 308, and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972 as amended by the Clean Water Act of 1977) (the “Act”); 33 U.S.C. 1311,1314,c,e,and, 1316(b) andc,and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217
source: 50 FR 34270, Aug. 23, 1985, unless otherwise noted.
cite as: 40 CFR 471.73
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