{"data":{"id":"us/40-cfr-421.322","jurisdiction":"us","citation":"40 CFR 421.322","heading":"Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.","body":"Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practiacable technology currently available:\n(a) Refinery sump filtrate.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium processed in the refinery\nChromium 32.270 13.200\nCopper 139.300 73.340\nNickel 140.800 93.140\nFluoride 2,567.000 1,459.000\nTotal suspended solids 3,007.000 1,430.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(b) Slag leach reslurry.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium processed in the refinery\nChromium (total) 2.009 0.822\nCopper 8.675 4.566\nNickel 8.767 5.799\nFluoride 159.800 90.860\nTotal suspended solids 187.200 89.040\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(c) Solvent extraction raffinate filtrate.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium processed in the refinery\nChromium (total) 2.802 1.146\nCopper 12.100 6.369\nNickel 12.230 8.089\nFluoride 222.900 126.700\nTotal suspended solids 261.100 124.200\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(d) Digestion wet air pollution control.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium processed in the refinery\nChromium (total) 0.000 0.000\nCopper 0.000 0.000\nNickel 0.000 0.000\nFluoride 0.000 0.000\nTotal suspended solids 0.000 0.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(e) Evaporation and denitration wet air pollution control.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium trioxide produced\nChromium (total) 0.000 0.000\nCopper 0.000 0.000\nNickel 0.000 0.000\nFluoride 0.000 0.000\nTotal suspended solids 0.000 0.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(f) Hydrofluorination alkaline scrubber.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium tetrafluoride produced\nChromium (total) 0.009 0.004\nCopper 0.038 0.020\nNickel 0.038 0.025\nFluoride 0.700 0.398\nTotal suspended solids 0.820 0.390\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(g) Hydrofluorination water scrubber.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium tetrafluoride produced\nChromium (total) 0.000 0.000\nCopper 0.000 0.000\nNickel 0.000 0.000\nFluoride 0.000 0.000\nTotal suspended solids 0.000 0.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(h) Magnesium reduction and casting floor wash.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium produced by magnesium reduction\nChromium (total) 0.013 0.005\nCopper 0.057 0.030\nNickel 0.058 0.038\nFluoride 1.054 0.599\nTotal suspended solids 1.234 0.587\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(i) Laundry wastewater.\nBPT Limitations for the Secondary Uranium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of uranium produced by magnesium reduction\nChromium (total) 0.084 0.035\nCopper 0.365 0.192\nNickel 0.369 0.244\nFluoride 6.720 3.821\nTotal suspended solids 7.872 3.744\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","Subpart AD—Secondary Uranium 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":"dad5d0060bab78b57f2b7a79069441a4529480b575a2ef15adc38967b27c2045","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.321","next":"us/40-cfr-421.323"},"notice":"GroundRules: Original legal text. Not legal advice."}