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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter N - Effluent Guidelines and Standards |
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Part 471 - Nonferrous Metals Forming and Metal Powders Point Source Category |
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Subpart E - Refractory Metals Forming Subcategory |
§ 471.51 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
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§ 471.51 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
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 for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
(a) Rolling spent neat oils and graphite based lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
(b) Rolling spent emulsions.
Subpart E - BPT
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 Copper 0.815 0.429 Nickel 0.824 0.545 Fluoride 25.5 11.3 Molybdenum 2.84 1.47 Oil and grease 8.58 5.15 TSS 17.6 8.37 pH (1) (1) (c) Drawing spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
(d) Extrusion spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
(e) Extrusion press hydraulic fluid leakage.
Subpart E - BPT
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 Copper 2.26 1.19 Nickel 2.29 1.51 Fluoride 70.8 31.4 Molybdenum 7.87 4.07 Oil and grease 23.8 14.3 TSS 48.8 23.2 pH (1) (1) (f) Forging spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
(g) Forging contact cooling water.
Subpart E - BPT
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 Copper 0.614 0.323 Nickel 0.620 0.410 Fluoride 19.2 8.53 Molybdenum 2.14 1.11 Oil and grease 6.46 3.88 TSS 13.3 6.30 pH (1) (1) (h) Equipment cleaning wastewater.
Subpart E - BPT
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 Copper 2.59 1.36 Nickel 2.61 1.73 Fluoride 80.9 35.9 Molybdenum 8.99 4.65 Oil and grease 27.2 16.3 TSS 55.8 26.5 pH (1) (1) (i) Metal powder production wastewater.
Subpart E - BPT
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 Copper 0.534 0.281 Nickel 0.540 0.357 Fluoride 16.70 7.42 Molybdenum 1.86 0.961 Oil and grease 5.62 3.37 TSS 11.5 5.48 pH (1) (1) (j) Metal powder production floor wash wastewater - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
(k) Metal powder pressing spent lubricants - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
(l) Surface treatment spent baths.
Subpart E - BPT
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 Copper 0.739 0.389 Nickel 0.747 0.494 Fluoride 23.2 10.3 Molybdenum 2.57 1.33 Oil and grease 7.78 4.68 TSS 16.0 7.59 pH (1) (1) (m) Surface treatment rinse.
Subpart E - BPT
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 Copper 230 121 Nickel 232 154 Fluoride 7,200 3,200 Molybdenum 800 414 Oil and grease 2,420 1,450 TSS 4,960 2,360 pH (1) (1) (n) Alkaline cleaning spent baths.
Subpart E - BPT
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 Copper 0.635 0.334 Nickel 0.641 0.424 Fluoride 19.9 8.82 Molybdenum 2.21 1.14 Oil and grease 6.68 4.01 TSS 13.7 6.51 pH (1) (1) (o) Alkaline cleaning rinse.
Subpart E - BPT
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 Copper 1,550 816 Nickel 1,570 1,040 Fluoride 48,600 21,600 Molybdenum 5,400 2,790 Oil and grease 16,300 9,790 TSS 33,500 15,900 pH (1) (1) (p) Molten salt rinse.
Subpart E - BPT
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 Copper 12.1 6.33 Nickel 12.2 8.04 Fluoride 377 167 Molybdenum 41.9 21.7 Oil and grease 127 76.0 TSS 260 124 pH (1) (1) (q) Tumbling or burnishing wastewater.
Subpart E - BPT
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 Copper 23.8 12.5 Nickel 24.0 15.9 Fluoride 744 330 Molybdenum 82.7 42.8 Oil and grease 250 150 TSS 513 244 pH (1) (1) (r) Sawing or grinding spent neat oils - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
(s) Sawing or grinding spent emulsions.
Subpart E - BPT
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 Copper 0.565 0.297 Nickel 0.570 0.377 Fluoride 17.7 7.84 Molybdenum 1.97 1.02 Oil and grease 5.94 3.57 TSS 12.2 5.79 pH (1) (1) (t) Sawing or grinding contact cooling water.
Subpart E - BPT
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 Copper 46.2 24.3 Nickel 46.7 30.9 Fluoride 1450 642 Molybdenum 161 83.1 Oil and grease 486 292 TSS 997 474 pH (1) (1) (u) Sawing or grinding rinse.
Subpart E - BPT
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 Copper 0.257 0.135 Nickel 0.259 0.172 Fluoride 8.03 3.57 Molybdenum 0.893 0.462 Oil and grease 2.70 1.62 TSS 5.54 2.63 pH (1) (1) (v) Wet air pollution control scrubber blowdown.
Subpart E - BPT
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, surface coated or surface treated Copper 1.50 0.787 Nickel 1.51 1.00 Fluoride 46.8 20.8 Molybdenum 5.20 2.69 Oil and grease 15.8 9.45 TSS 32.3 15.4 pH (1) (1) (w) Miscellaneous wastewater sources.
Subpart E - BPT
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 Copper 0.656 0.345 Nickel 0.663 0.438 Fluoride 20.6 9.11 Molybdenum 2.28 1.18 Oil and grease 6.9 4.14 TSS 14.2 6.73 pH (1) (1) (x) Dye penetrant testing wastewater.
Subpart E - BPT
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of refractory metals tested Copper 0.150 0.078 Nickel 0.150 0.099 Fluoride 4.60 2.00 Molybdenum 0.513 0.266 Oil and grease 1.60 0.930 TSS 3.20 1.50 pH (1) (1) (y) Degreasing spent solvents - subpart E - BPT. There shall be no discharge of process wastewater pollutants.
[50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]