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]
§ 471.52 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT):

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

(b) Rolling spent emulsions.

Subpart E—BAT

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
Nickel0.2360.157
Fluoride25.511.3
Molybdenum2.160.957

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

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

(e) Extrusion press hydraulic fluid leakage.

Subpart E—BAT

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
Copper1.50.730
Nickel0.6500.440
Fluoride71.00031.0
Molybdenum5.992.66

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

(g) Forging contact cooling water.

Subpart E—BAT

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
Copper0.0410.020
Nickel0.0180.012
Fluoride1.920.853
Molybdenum0.1630.072

(h) Equipment cleaning wastewater.

Subpart E—BAT

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—BAT

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—BAT. There shall be no discharge of process wastewater pollutants.

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

(l) Surface treatment spent baths.

Subpart E—BAT

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—BAT

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—BAT

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—BAT

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
Fluoride486216
Molybdenum41.118.2

(p) Molten salt rinse.

Subpart E—BAT

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—BAT

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—BAT. There shall be no discharge of process wastewater pollutants.

(s) Sawing or grinding spent emulsions.

Subpart E—BAT

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—BAT

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
Fluoride145.064.2
Molybdenum12.25.42

(u) Sawing or grinding rinse.

Subpart E—BAT

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 scrubber blowdown.

Subpart E—BAT

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, surface coated or surface treated
Copper1.010.480
Nickel0.4330.291
Fluoride46.820.8
Molybdenum3.961.76

(w) Miscellaneous wastewater sources.

Subpart E—BAT

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
Nickel0.1900.128
Fluoride20.69.11
Molybdenum1.740.770

(x) Dye penetrant testing wastewater.

Subpart E—BAT

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 spent solvents—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

[50 FR 34270, Aug. 23, 1985; 51 FR 2886, 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 471.52
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