Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
§ 471.75 - Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources (PSNS). The mass of wastewater pollutants in uranium forming process wastewater introduced into a POTW shall not exceed the following values:

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

(b) Extrusion tool contact cooling water.

Subpart G—PSNS

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

(c) Heat treatment contact cooling water.

Subpart G—PSNS

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

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

(e) Surface treatment spent baths.

Subpart G—PSNS

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

(f) Surface treatment rinse.

Subpart G—PSNS

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

(g) Wet air pollution control scrubber blowdown.

Subpart G—PSNS

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

(h) Sawing or grinding spent emulsions.

Subpart G—PSNS

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

(i) Sawing or grinding contact cooling water.

Subpart G—PSNS

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

(j) Sawing or grinding rinse.

Subpart G—PSNS

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

(k) Area cleaning rinse.

Subpart G—PSNS

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

(l) Drum washwater.

Subpart G—PSNS

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

(m) Laundry washwater.

Subpart G—PSNS

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

(n) Degreasing spent solvents—subpart G—PSNS. There shall be no discharge of process wastewater 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 471.75