{"data":{"id":"us/40-cfr-471.11","jurisdiction":"us","citation":"40 CFR 471.11","heading":"Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).","body":"Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):\n(a) Rolling spent emulsions.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth rolled with emulsions\nAntimony 0.068 0.030\nLead 0.010 0.005\nOil and grease 0.468 0.281\nTSS 0.960 0.457\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(b) Rolling spent soap solutions.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pound) of lead-tin-bismuth rolled with soap solutions\nAntimony 0.125 0.055\nLead 0.019 0.009\nOil and grease 0.860 0.520\nTSS 1.80 0.840\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(c) Drawing spent neat oils—subpart A—BPT. There shall be no discharge of process wastewater pollutants.\n(d) Drawing spent emulsions.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth drawn with emulsions\nAntimony 0.076 0.034\nLead 0.011 0.005\nOil and grease 0.526 0.316\nTSS 1.08 0.513\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(e) Drawing spent soap solutions.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth drawn with soap solutions\nAntimony 0.022 0.010\nLead 0.003 0.002\nOil and grease 0.149 0.090\nTSS 0.306 0.146\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(f) Extrusion press and solution heat treatment contact cooling water.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds of lead-tin-bismuth heat treated\nAntimony 4.14 1.850\nLead 0.605 0.288\nOil and grease 28.80 17.30\nTSS 59.10 28.10\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(g) Extrusion press hydraulic fluid leakage.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth extruded\nAntimony 0.158 0.071\nLead 0.023 0.011\nOil and grease 1.10 0.660\nTSS 2.26 1.07\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(h) Continuous strip casting contact cooling water.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth cast by the continuous strip method\nAntimony 0.003 0.001\nLead 0.0004 0.0002\nOil and grease 0.020 0.012\nTSS 0.041 0.020\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(i) Semi-continuous ingot casting contact cooling water.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth ingot cast by the sem-continuous method\nAntimony 0.085 0.038\nLead 0.013 0.006\nOil and grease 0.588 0.353\nTSS 1.21 0.574\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(j) Shot casting contact cooling water.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth shot cast\nAntimony 0.107 0.048\nLead 0.016 0.008\nOil and grease 0.746 0.448\nTSS 1.53 0.728\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(k) Shot-forming wet air pollution control scrubber blowdown.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth shot formed\nAntimony 1.69 0.753\nLead 0.247 0.118\nOil and grease 11.8 7.06\nTSS 24.1 11.5\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(l) Alkaline cleaning spent baths.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth alkaline cleaned\nAntimony 0.345 0.154\nLead 0.051 0.024\nOil and grease 2.40 1.44\nTSS 4.92 2.34\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(m) Alkaline cleaning rinse.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth alkaline cleaned\nAntimony 6.78 3.02\nLead 0.991 0.472\nOil and grease 47.2 28.4\nTSS 96.8 46.0\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(n) Swaging spent emulsions.\nSubpart A—BPT\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/off-kg (pounds per million off-pounds) of lead-tin-bismuth swaged with emulsion\nAntimony 0.005 0.002\nLead 0.0007 0.0004\nOil and grease 0.036 0.022\nTSS 0.073 0.034\npH (1)\n1 Within the range of 7.5 to 10.0 at all times.\n(o) Degreasing spent solvents—subpart A—BPT. There shall be no discharge of process wastewater pollutants.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 471—NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY","Subpart A—Lead-Tin-Bismuth Forming 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":"64053adcb5124882865b36070a50c1b8beeba6b330a52eb654643c89c5f37818","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-471.10","next":"us/40-cfr-471.12"},"notice":"GroundRules: Original legal text. Not legal advice."}