{"data":{"id":"us/40-cfr-471.53","jurisdiction":"us","citation":"40 CFR 471.53","heading":"New source performance standards (NSPS).","body":"Any new source subject to this subpart must achieve the following new source performance standards (NSPS):\n(a) Rolling spent neat oils and graphite based lubricants—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.\n(b) Rolling spent emulsions.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals rolled with emulsions\nCopper 0.549 0.262\nNickel 0.236 0.159\nFluoride 25.5 11.3\nMolybdenum 2.16 0.957\nOil and grease 4.29 4.29\nTSS 6.44 5.15\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(c) Drawing spent lubricants—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.\n(d) Extrusion spent lubricants—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.\n(e) Extrusion press hydraulic fluid leakage.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals extruded\nCopper 1.53 0.726\nNickel 0.655 0.441\nFluoride 70.8 31.4\nMolybdenum 5.99 2.66\nOil and grease 11.9 11.9\nTSS 17.9 14.3\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(f) Forging spent lubricants—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.\n(g) Forging contact cooling water.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of forged refractory metals cooled with water\nCopper 0.041 0.020\nNickel 0.018 0.012\nFluoride 1.92 0.853\nMolybdenum 0.163 0.072\nOil and grease 0.323 0.323\nTSS 0.485 0.388\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(h) Equipment cleaning wastewater.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals formed\nCopper 0.174 0.083\nNickel 0.075 0.051\nFluoride 8.09 3.59\nMolybdenum 0.684 0.303\nOil and grease 1.36 1.36\nTSS 2.04 1.63\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(i) Metal powder production wastewater.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals powder produced\nCopper 0.360 0.172\nNickel 0.155 0.104\nFluoride 16.7 7.42\nMolybdenum 1.42 0.627\nOil and grease 2.81 2.81\nTSS 4.22 3.37\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(j) Metal powder production floor wash wastewater—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.\n(k) Metal powder pressing spent lubricants—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.\n(l) Surface treatment spent baths.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals surface treated\nCopper 0.498 0.237\nNickel 0.214 0.144\nFluoride 23.2 10.3\nMolybdenum 1.96 0.868\nOil and grease 3.89 3.89\nTSS 5.84 4.67\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(m) Surface treatment rinse.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals surface treated\nCopper 15.5 7.38\nNickel 6.66 4.48\nFluoride 720 320\nMolybdenum 69.9 27.0\nOil and grease 121 121\nTSS 182 145\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(n) Alkaline cleaning spent baths.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned\nCopper 0.428 0.204\nNickel .184 0.124\nFluoride 19.9 8.82\nMolybdenum 1.68 0.745\nOil and grease 3.34 3.34\nTSS 5.01 4.01\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(o) Alkaline cleaning rinse.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned\nCopper 10.5 4.98\nNickel 4.49 3.02\nFluoride 486 216\nMolybdenum 41.1 18.2\nOil and grease 81.6 81.6\nTSS 123 97.9\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(p) Molten salt rinse.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals treated with molten salt\nCopper 0.810 0.386\nNickel 0.348 0.234\nFluoride 37.7 16.7\nMolybdenum 3.19 1.41\nOil and grease 6.33 6.33\nTSS 9.5 7.6\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(q) Tumbling or burnishing wastewater.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals tumbled or burnished\nCopper 1.60 0.763\nNickel 0.688 0.463\nFluoride 74.4 33.0\nMolybdenum 6.29 2.79\nOil and grease 12.5 12.5\nTSS 18.8 15.0\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(r) Sawing or grinding spent neat oils—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.\n(s) Sawing or grinding spent emulsions.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with emulsions\nCopper 0.380 0.181\nNickel 0.164 0.110\nFluoride 17.7 7.84\nMolybdenum 1.5 0.663\nOil and grease 2.97 2.97\nTSS 4.46 3.57\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(t) Sawing or grinding contact cooling water.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with contact cooling water\nCopper 3.11 1.48\nNickel 1.34 0.899\nFluoride 145 64.2\nMolybdenum 12.2 5.42\nOil and grease 24.3 24.3\nTSS 36.5 29.2\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(u) Sawing or grinding rinse.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of sawed or ground refractory metals rinsed\nCopper 0.018 0.009\nNickel 0.008 0.005\nFluoride 0.803 0.357\nMolybdenum 0.068 0.030\nOil and grease 0.135 0.135\nTSS 0.203 0.162\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(v) Wet air pollution control scrubber blowdown.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals sawed, ground, surface coated or surface treated\nCopper 1.01 0.480\nNickel 0.433 0.291\nFluoride 46.8 20.8\nMolybdenum 3.96 1.76\nOil and grease 7.87 7.87\nTSS 11.8 9.45\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(w) Miscellaneous wastewater sources.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals formed\nCopper 0.442 0.211\nNickel 0.190 0.128\nFluoride 20.6 9.11\nMolybdenum 1.74 0.770\nOil and grease 3.45 3.45\nTSS 5.18 4.14\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(x) Dye penetrant testing wastewater.\nSubpart E—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of refractory metals product tested\nCopper 0.100 0.048\nNickel 0.043 0.029\nFluoride 4.62 2.05\nMolybdenum 0.391 0.173\nOil and grease 0.776 0.776\nTSS 1.17 0.931\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(y) Degreasing spent solvents—subpart E—NSPS. There shall be no discharge of process wastewater pollutants.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 471—NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY","Subpart E—Refractory Metals Forming Subcategory"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"e308bb2f40b8a7f1485ab0354ecabfc2fbd4241528e3909f26e2efed50876a07","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-471.52","next":"us/40-cfr-471.54"},"notice":"GroundRules: Original legal text. Not legal advice."}