{"data":{"id":"us/40-cfr-421.152","jurisdiction":"us","citation":"40 CFR 421.152","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 practicable technology currently available:\n(a) Solvent Extraction Raffinate from Bertrandite Ore.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium carbonate produced from bertrandite ore as beryllium\nBeryllium 2,763.000 1,235.000\nChromium (total) 988.200 404.300\nCopper 4,267.000 2,246.000\nCyanide (total) 651.300 269.500\nAmmonia (as N) 299,400.000 131,600.000\nFluoride 78,610.000 44,700.000\nTotal suspended solids 92,090.000 43,800.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times\n(b) Solvent Extraction Raffinate from Beryl Ore.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium carbonate produced from beryl ore as beryllium\nBeryllium 270.6 121.0\nChromium (total) 96.8 39.6\nCopper 418.0 220.0\nCyanide (total) 63.8 26.4\nAmmonia (as N) 29,330.0 12,890.0\nFluoride 7,700.0 4,378.0\nTotal suspended solids 9,020.0 4,290.0\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(c) Beryllium Carbonate Filtrate.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium carbonate produced as beryllium\nBeryllium 263.800 118.000\nChromium (total) 94.380 38.610\nCopper 407.600 214.500\nCyanide (total) 62.210 25.740\nAmmonia (as N) 28,590.000 12,570.000\nFluoride 7,508.000 4,269.000\nTotal suspended 8,795.000 4,183.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(d) Beryllium Hydroxide Filtrate.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium hydroxide produced as beryllium\nBeryllium 167.280 74.800\nChromium (Total) 59.840 24.480\nCopper 258.400 136.000\nCyanide (Total) 39.440 16.320\nAmmonia (as N) 18128.800 7969.600\nFluoride 4760.000 2706.400\nTotal Suspended Solids 5576.000 2652.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(e) Beryllium Oxide Calcining Furnace Wet Air Pollution Control.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium oxide produced\nBeryllium 324.000 145.000\nChromium (total) 116.000 47.470\nCopper 501.000 263.700\nCyanide (total) 76.470 31.640\nAmmonia (as N) 35,150.000 15,450.000\nFluoride 9,230.000 5,248.000\nTotal suspended solids 10,810.000 5,142.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(f) Beryllium hydroxide supernatant.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium hydroxide produced from scrap and residues as beryllium\nBeryllium 282.9 126.5\nChromium (total) 101.2 41.4\nCopper 437.0 230.0\nCyanide (total) 66.7 27.6\nAmmonia (as N) 30,660.0 13,480.0\nFluoride 160,308.0 71,201.0\nTotal suspended solids 9,430.0 4,485.0\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(g) Process water.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium pebbles produced\nBeryllium 215.00 96.14\nChromium (total) 76.91 31.46\nCopper 332.10 174.80\nCyanide (total) 50.69 20.98\nAmmonia (as N) 23,300.00 10,240.00\nFluoride 6,118.00 3,479.00\nTotal suspended solids 7,167.00 3,409.00\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(h) Fluoride furnace scrubber.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium pebbles produced\nBeryllium 0.000 0.000\nChromium (total) 0.000 0.000\nCopper 0.000 0.000\nCyanide (total) 0.000 0.000\nAmmonia (as N) 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(i) Chip treatment wastewater.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium scrap chips treated\nBeryllium 9.533 4.263\nChromium (total) 3.410 1.395\nCopper 14.730 7.750\nCyanide (total) 2.248 0.930\nAmmonia (as N) 1,033.000 454.200\nFluoride 271.300 154.200\nTotal suspended solids 317.800 151.100\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(j) Beryllium Pebble Plant Area Vent Wet Air Pollution Control.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryllium pebbles produced\nBeryllium 0.000 0.000\nChromium (total) 0.000 0.000\nCopper 0.000 0.000\nCyanide (total) 0.000 0.000\nAmmonia (as N) 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(k) Beryl Ore Gangue Dewatering.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryl ore processed\nBeryllium 1.283 0.574\nChromium (Total) 0.459 0.188\nCopper 1.982 1.043\nCyanide (Total) 0.302 0.125\nAmmonia (as N) 139.032 61.120\nFluoride 36.505 20.756\nTotal Suspended Solids 42.763 20.339\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(l) Bertrandite Ore Gangue Dewatering.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of bertrandite ore processed\nBeryllium 3.279 1.466\nChromium (Total) 1.173 0.480\nCopper 5.064 2.665\nCyanide (Total) 0.773 0.320\nAmmonia (as N) 355.245 156.169\nFluoride 93.275 53.034\nTotal Suspended Solids 109.265 51.968\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(m) Beryl Ore Processing.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of beryl ore processed\nBeryllium 8.983 4.017\nChromium (Total) 3.213 1.315\nCopper 13.876 7.303\nCyanide (Total) 2.118 0.876\nAmmonia (as N) 973.490 427.956\nFluoride 255.605 145.330\nTotal Suspended Solids 299.423 142.409\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(n) Aluminum Iron Sludge (AIS) Area Wastewater.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of total beryllium carbonate produced as beryllium\nBeryllium 575.640 257.400\nChromium (Total) 205.920 84.240\nCopper 889.200 468.000\nCyanide (Total) 135.720 56.160\nAmmonia (as N) 62384.400 27424.800\nFluoride 16380.000 9313.200\nTotal Suspended Solids 19188.000 9126.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(o) Bertrandite Ore Leaching Scrubber.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg of bertrandite ore processed\nBeryllium 1.859 0.831\nChromium (Total) 0.665 0.272\nCopper 2.871 1.511\nCyanide (Total) 0.438 0.181\nAmmonia (as N) 201.416 88.545\nFluoride 52.885 30.069\nTotal Suspended Solids 61.951 29.465\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(p) Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.\nBPT Limitations for the Primary Beryllium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg of bertrandite ore processed\nBeryllium 0.124 0.056\nChromium (Total) 0.044 0.018\nCopper 0.192 0.101\nCyanide (Total) 0.029 0.012\nAmmonia (as N) 13.463 5.919\nFluoride 3.535 2.010\nTotal Suspended Solids 4.141 1.970\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 O—Primary Beryllium 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":"09ec4dfa9296f6dc68e51f27051e8afc934d6f77824f5c65886581aeeca2e2be","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.151","next":"us/40-cfr-421.153"},"notice":"GroundRules: Original legal text. Not legal advice."}