{"data":{"id":"us/40-cfr-421.153","jurisdiction":"us","citation":"40 CFR 421.153","heading":"Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.","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 available technology economically achievable:\n(a) Solvent extraction raffinate from bertrandite ore.\nBAT 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 1,842.000 831.000\nChromium (total) 831.000 336.900\nCopper 2,875.000 1,370.000\nCyanide (total) 449.200 179.700\nAmmonia (as N) 299,400.000 131,600.000\nFluoride 78,610.000 44,700.000\n(b) Solvent extraction raffinate from beryl ore.\nBAT 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 180.4 81.4\nChromium (total) 81.4 33.0\nCopper 281.6 134.2\nCyanide (total) 44.0 17.6\nAmmonia (as N) 29,330.0 12,890.0\nFluoride 7,700.0 4,378.0\n(c) Beryllium carbonate filtrate.\nBAT 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 175.900 79.370\nChromium (total) 79.370 32.180\nCopper 274.600 130.800\nCyanide (total) 42.900 17.160\nAmmonia (as N) 28,590.000 12,570.000\nFluoride 7,508.000 4,269.000\n(d) Beryllium Hydroxide Filtrate.\nBAT 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 111.520 50.320\nChromium (Total) 50.320 20.400\nCopper 174.080 82.960\nCyanide (Total) 27.200 10.880\nAmmonia (as N) 18128.800 7969.600\nFluoride 4760.000 2706.400\n(e) Beryllium oxide calcining furnace wet air pollution control.\nBAT 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 216.20 97.57\nChromium (total) 97.57 39.56\nCopper 337.50 160.90\nCyanide (total) 52.74 21.10\nAmmonia (as N) 35,150.00 15,450.00\nFluoride 9,230.00 5,248.00\n(f) Beryllium hydroxide supernatant.\nBAT 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 188.6 85.1\nChromium (total) 85.1 34.5\nCopper 294.4 140.3\nCyanide (total) 46.0 18.4\nAmmonia (as N) 30,660.0 13,480.0\nFluoride 160,308.0 71,201.0\n(g) Process water.\nBAT 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 143.30 64.68\nChromium (total) 64.68 26.22\nCopper 223.70 106.60\nCyanide (total) 34.96 13.98\nAmmonia (as N) 23,300.00 10,240.00\nFluoride 6,118.00 3,479.00\n(h) Fluoride furnace scrubber.\nBAT 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\n(i) Chip treatment wastewater.\nBAT 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 6.355 2.868\nChromium (total) 2.868 1.163\nCopper 9.920 4.728\nCyanide (total) 1.550 0.620\nAmmonia (as N) 1,033.000 454.200\nFluoride 271.300 154.200\n(j) Beryllium pebble plant area vent wet air pollution control.\nBAT 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\n(k) Beryl Ore Gangue Dewatering.\nBAT 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 0.855 0.386\nChromium (Total) 0.386 0.156\nCopper 1.335 0.636\nCyanide (Total) 0.209 0.083\nAmmonia (as N) 139.032 61.120\nFluoride 36.505 20.756\n(l) Bertrandite Ore Gangue Dewatering.\nBAT 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 2.185 0.986\nChromium (Total) 0.986 0.400\nCopper 3.411 1.626\nCyanide (Total) 0.533 0.213\nAmmonia (as N) 355.245 156.169\nFluoride 93.275 53.034\n(m) Beryl Ore Processing.\nBAT 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 5.988 2.702\nChromium (Total) 2.702 1.095\nCopper 9.348 4.455\nCyanide (Total) 1.461 0.584\nAmmonia (as N) 973.490 427.956\nFluoride 255.605 145.330\n(n) Alumium Iron Sludge (AIS) Area Wastewater.\nBAT 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 383.760 173.160\nChromium (Total) 173.160 70.200\nCopper 599.040 285.480\nCyanide (Total) 93.600 37.440\nAmmonia (as N) 62384.400 27424.800\nFluoride 16380.000 9313.200\n(o) Bertrandite Ore Leaching Scrubber.\nBAT 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 1.239 0.559\nChromium (Total) 0.559 0.227\nCopper 1.934 0.922\nCyanide (Total) 0.302 0.121\nAmmonia (as N) 201.416 88.545\nFluoride 52.885 30.069\n(p) Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.\nBAT 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 0.083 0.037\nChromium (Total) 0.037 0.015\nCopper 0.129 0.062\nCyanide (Total) 0.020 0.008\nAmmonia (as N) 13.463 5.919\nFluoride 3.535 2.010","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":"95dee644d0407321afb20d17d3a4818a1328d4ec91c7d6316e11059ff70a045d","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.152","next":"us/40-cfr-421.154"},"notice":"GroundRules: Original legal text. Not legal advice."}