{"data":{"id":"us/40-cfr-421.302","jurisdiction":"us","citation":"40 CFR 421.302","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) Chlorination off-gas wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of TiCl4 produced\nChromium (total) 0.412 0.168\nLead 0.393 0.187\nNickel 1.797 1.189\nTitanium 0.880 0.384\nOil and grease 18.720 11.230\nTotal suspended solids 38.380 18.250\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(b) Chlorination area-vent wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of TiCl4 produced\nChromium (total) 0.412 0.168\nChromium (total) 0.458 0.187\nLead 0.437 0.208\nNickel 1.997 1.321\nTitanium 0.978 0.426\nOil and grease 20.800 12.480\nTotal suspended solids 42.640 20.280\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(c) TiCl4 handling wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of TiCl4 handled\nChromium (total) 0.082 0.034\nLead 0.079 0.037\nNickel 0.359 0.237\nTitanium 0.176 0.077\nOil and grease 3.740 2.244\nTotal suspended solids 7.667 3.647\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(d) Reduction area wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium produced\nChromium (total) 18.170 7.435\nLead 17.350 8.261\nNickel 79.300 52.450\nTitanium 38.820 16.930\nOil and grease 826.100 495.600\nTotal suspended solids 1,693.000 805.400\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(e) Melt cell wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium produced\nChromium (total) 9.352 3.826\nLead 8.927 4.251\nNickel 40.810 26.990\nTitanium 19.980 8.714\nOil and grease 425.100 255.000\nTotal suspended solids 871.400 414.500\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(f) Chlorine liquefaction wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium produced\nChromium (total) 130.900 53.560\nLead 125.000 59.510\nNickel 571.300 377.900\nTitanium 279.700 122.000\nOil and grease 5,951.000 3,571.000\nTotal suspended solids 12,200.000 5,702.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(g) Sodium reduction container reconditioning wash water.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium produced\nChromium (total) 0.564 0.231\nLead 0.538 0.256\nNickel 2.461 1.628\nTitanium 1.205 0.526\nOil and grease 25.640 15.380\nTotal suspended solids 52.560 25.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(h) Chip crushing wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium produced\nChromium (total) 10.090 4.126\nLead 9.627 4.584\nNickel 44.010 29.110\nTitanium 21.550 9.398\nOil and grease 458.400 275.100\nTotal suspended solids 939.800 447.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(i) Acid leachate and rinse water.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium produced\nChromium (total) 5.210 2.131\nLead 4.973 2.368\nNickel 22.730 15.040\nTitanium 11.130 4.854\nOil and grease 236.800 142.100\nTotal suspended solids 485.400 230.900\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(j) Sponge crushing and screening wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium produced\nChromium (total) 2.847 1.165\nLead 2.717 1.294\nNickel 12.420 8.217\nTitanium 6.082 2.653\nOil and grease 129.400 77.640\nTotal suspended solids 265.300 126.200\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(k) Acid pickle and wash water.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium pickled\nChromium (total) 0.027 0.011\nLead 0.026 0.012\nNickel 0.117 0.077\nTitanium 0.057 0.025\nOil and grease 1.220 0.732\nTotal suspended solids 2.501 1.190\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(l) Scrap milling wet air pollution control.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of scrap milled\nChromium (total) 0.995 0.407\nLead 0.950 0.452\nNickel 4.341 2.871\nTitanium 2.125 0.927\nOil and grease 45.220 27.130\nTotal suspended solids 92.700 44.090\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(m) Scrap detergent wash water.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of scrap washed\nChromium (total) 7.948 3.252\nLead 7.587 3.613\nNickel 34.680 22.940\nTitanium 16.980 7.406\nOil and grease 361.300 216.800\nTotal suspended solids 740.600 352.300\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(n) Casting crucible wash water.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium cast\nChromium (total) 0.210 0.086\nLead 0.200 0.095\nNickel 0.916 0.606\nTitanium 0.448 0.196\nOil and grease 9.540 5.724\nTotal suspended solids 19.560 9.302\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(o) Casting contact cooling water.\nBPT Limitations for the Primary and Secondary Titanium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of titanium cast\nChromium (total) 321.100 131.400\nLead 306.500 145.900\nNickel 1,401.000 926.800\nTitanium 685.900 299.200\nOil and grease 14,590.000 8,757.000\nTotal suspended solids 29,920.000 14,230.000\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 AB—Primary and Secondary Titanium 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":"be1ee8bdbad90bfea8af4b47412f53219cdaad930337df638e317f97b4bca86d","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.301","next":"us/40-cfr-421.303"},"notice":"GroundRules: Original legal text. Not legal advice."}