[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR471.51] [Page 736-739] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 471_NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY--Table of Contents Subpart E_Refractory Metals Forming Subcategory Sec. 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 ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (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 ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. [[Page 737]] (f) Forging spent lubricants--Subpart E--BPT. There shall be no discharge of process wastewater pollutants. (g) Forging contact cooling water. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (h) Equipment cleaning wastewater. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (i) Metal powder production wastewater. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (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 ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (m) Surface treatment rinse. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (n) Alkaline cleaning spent baths. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (o) Alkaline cleaning rinse. [[Page 738]] Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (p) Molten salt rinse. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (q) Tumbling or burnishing wastewater. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ Within the range of 7.5 to 10.0 at all times. (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 ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (t) Sawing or grinding contact cooling water. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (u) Sawing or grinding rinse. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (v) Wet air pollution control scrubber blowdown. [[Page 739]] Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (w) Miscellaneous wastewater sources. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (x) Dye penetrant testing wastewater. Subpart E--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day 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\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (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]