{"data":{"id":"us/40-cfr-421.282","jurisdiction":"us","citation":"40 CFR 421.282","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) Tantalum alloy leach and rinse.\nBPT Limitations for the Secondary Tantalum Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of tantalum powder produced\nCopper 438.100 230.600\nLead 96.850 46.120\nNickel 442.800 292.900\nZinc 336.700 140.700\nTantalum 103.800\nTotal suspended solids 9,455.000 4,497.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(b) Capacitor leach and rinse.\nBPT Limitations for the Secondary Tantalum Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of tantalum powder produced from leaching\nCopper 38.380 20.200\nLead 8.484 4.040\nNickel 38.780 25.650\nZinc 29.490 12.320\nTantalum 9.090\nTotal suspended solids 828.200 393.900\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(c) Tantalum sludge leach and rinse.\nBPT Limitations for the Secondary Tantalum Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of equivalent pure tantalum powder produced\nCopper 390.100 205.300\nLead 86.230 41.060\nNickel 394.200 260.700\nZinc 299.700 125.200\nTantalum 92.390\nTotal suspended solids 8,417.000 4,003.000\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(d) Tantalum powder acid wash and rinse.\nBPT Limitations for the Secondary Tantalum Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of tantalum powder produced\nCopper 0.665 0.350\nLead 0.147 0.070\nNickel 0.672 0.445\nZinc 0.511 0.214\nTantalum 0.158\nTotal suspended solids 14.350 6.825\npH (1) (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(e) Leaching wet air pollution control.\nBPT Limitations for the Secondary Tantalum Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of equivalent pure tantalum powder produced\nCopper 9.272 4.880\nLead 2.050 0.976\nNickel 9.370 6.198\nZinc 7.125 2.977\nTantalum 2.196\nTotal suspended solids 200.100 95.160\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 Z—Secondary Tantalum 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":"03c93699766415464542656b263c99cb4413849cc6eda4b956ba54c6dd21a5e3","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.281","next":"us/40-cfr-421.283"},"notice":"GroundRules: Original legal text. Not legal advice."}