Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
All TitlesTitle 40Chapter IPart 471Subpart E - Subpart E—Refractory Metals Forming Subcategory
View all text of Subpart E [§ 471.50 - § 471.56]
§ 471.55 - 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 the refractory metals forming process wastewater shall not exceed the values set forth below:

(a) Rolling spent neat oils and graphite based lubricants—subpart E—PSNS. There shall be no discharge of process wastewater pollutants.

(b) Rolling spent emulsions.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals rolled with emulsions
Copper0.5490.262
Nickel0.2360.159
Fluoride25.511.3
Molybdenum2.160.957

(c) Drawing spent lubricants—subpart E—PSNS. There shall be no discharge of process wastewater pollutants.

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

(e) Extrusion press hydraulic fluid leakage.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals extruded
Copper1.530.726
Nickel0.6550.441
Fluoride70.831.4
Molybdenum5.992.66

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

(g) Forging contact cooling water.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of forged refractory metals cooled with water
Copper0.0410.320
Nickel0.0180.021
Fluoride1.920.853
Molybdenum0.1630.072

(h) Equipment cleaning wastewater.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals formed
Copper0.1740.083
Nickel0.0750.051
Fluoride8.093.59
Molybdenum0.6840.303

(i) Metal powder production wastewater.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals powder produced
Copper0.3600.172
Nickel0.1550.104
Fluoride16.77.42
Molybdenum1.420.627

(j) Metal powder production floor wash wastewater—subpart E—PSNS. There shall be no discharge of process wastewater pollutants.

(k) Metal powder pressing spent lubricants—subpart E—PSNS. There shall be no discharge of process wastewater pollutants.

(l) Surface treatment spent baths.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals surface treated
Copper0.4980.237
Nickel0.2140.144
Fluoride23.210.3
Molybdenum1.960.868

(m) Surface treatment rinse.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals surface treated
Copper15.57.38
Nickel6.664.48
Fluoride720320
Molybdenum60.927.0

(n) Alkaline cleaning spent baths.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned
Copper0.4280.204
Nickel0.1840.124
Fluoride19.98.82
Molybdenum1.680.745

(o) Alkaline cleaning rinse.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned
Copper10.54.98
Nickel4.493.02
Fluoride48.6216
Molybdenum41.118.2

(p) Molten salt rinse.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals treated with molten salt
Copper0.8100.386
Nickel0.3480.234
Fluoride37.716.7
Molybdenum3.191.41

(q) Tumbling or burnishing wastewater.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals tumbled or burnished
Copper1.600.763
Nickel0.6880.463
Fluoride74.433.0
Molybdenum6.292.79

(r) Sawing or grinding spent neat oils—subpart E—PSNS. There shall be no discharge or process wastewater pollutants.

(s) Sawing or grinding spent emulsions.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with emulsions
Copper0.3800.181
Nickel0.1640.110
Fluoride17.77.84
Molybdenum1.500.663

(t) Sawing or grinding contact cooling water.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with contact cooling water
Copper3.111.48
Nickel1.340.899
Fluoride14564.2
Molybdenum12.25.42

(u) Sawing or grinding rinse.

Subpart E—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 refractory metals rinsed
Copper0.0180.009
Nickel0.0080.005
Fluoride0.8030.357
Molybdenum0.0680.030

(v) Wet air pollution control blowdown.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals sawed, ground, surface coated or surface treated
Copper1.010.480
Nickel0.4330.291
Fluoride46.820.8
Molybdenum3.961.76

(w) Miscellaneous wastewater source.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals formed
Copper0.4420.211
Nickel0.1920.128
Fluoride20.69.11
Molybdenum1.740.770

(x) Dye penetrant testing wastewater.

Subpart E—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of refractory metals product tested
Copper0.1000.048
Nickel0.0430.029
Fluoride4.622.05
Molybdenum0.3910.173

(y) Degreasing spend solvents—subpart E—PSNS. There shall be no discharge of process wastewater pollutants.

[50 FR 34270, Aug. 23, 1985; 51 FR 2887, 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 471.55
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