{"data":{"id":"us/40-cfr-471.103","jurisdiction":"us","citation":"40 CFR 471.103","heading":"New source performance standards (NSPS).","body":"Any new source subject to this subpart must achieve the following new source performance standards (NSPS). The mass of pollutants in the metal powder process wastewater shall not exceed the following values:\n(a) Metal powder production atom-ization wastewater.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder wet atomized\nCopper 9.58 5.04\nCyanide 1.46 0.605\nLead 2.12 1.01\nOil and grease 101 60.5\nTSS 207 98.3\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(b) Sizing spent emulsions.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder sized\nCopper 0.028 0.015\nCyanide 0.004 0.002\nLead 0.006 0.003\nOil and grease 0.292 0.175\nTSS 0.599 0.285\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(c) Oil-resin impregnation wastewater—subpart J—NSPS. There shall be no discharge of process wastewater pollutants.\n(d) Steam treatment wet air pollution control scrubber blowdown.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder metallurgy parts steam treated\nCopper 0.151 0.079\nCyanide 0.023 0.010\nLead 0.033 0.016\nOil and grease 1.59 0.951\nTSS 3.25 1.55\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(e) Tumbling, burnishing and cleaning wastewater.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder metallurgy parts tumbled, burnished, or cleaned\nCopper 0.836 0.440\nCyanide 0.128 0.053\nLead 0.185 0.088\nOil and grease 8.80 5.28\nTSS 18.1 8.58\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(f) Sawing or grinding spent neat oils—subpart J—NSPS. There shall be no discharge of process wastewater pollutants.\n(g) Sawing or grinding spent emulsions.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with emulsions\nCopper 0.035 0.018\nCyanide 0.005 0.002\nLead 0.008 0.004\nOil and grease 0.362 0.217\nTSS 0.742 0.353\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(h) Sawing or grinding contact cooling water.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder sawed or ground with contact cooling water\nCopper 3.08 1.62\nCyanide 0.470 0.195\nLead 0.681 0.324\nOil and grease 32.4 19.5\nTSS 66.4 31.6\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(i) Hot pressing contact cooling water.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder cooled after pressing\nCopper 1.67 0.880\nCyanide 0.255 0.106\nLead 0.370 0.176\nOil and grease 17.6 10.6\nTSS 36.1 17.2\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(j) Mixing wet air pollution control scrubber blowdown.\nSubpart J—NSPS\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of powder mixed\nCopper 15.0 7.90\nCyanide 2.29 0.948\nLead 3.32 1.58\nOil and grease 158 94.8\nTSS 324 154\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(k) Degreasing spent solvents—subpart J—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 J—Metals Powders 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":"fd7340896278e5e0e39973f670901d113b5ac117733e2385191e39660c85fb29","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-471.102","next":"us/40-cfr-471.104"},"notice":"GroundRules: Original legal text. Not legal advice."}