{"data":{"id":"us/40-cfr-468.12","jurisdiction":"us","citation":"40 CFR 468.12","heading":"Effluent limitations 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 must achieve the following effluent reduction attainable by the application of the best available technology economically achievable (BAT):\n(a) Subpart A—Hot Rolling Spent Lubricant BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy hot rolled\nEnglish Units—pounds per 1,000,000 off-pounds of copper or copper alloy hot rolled\nChromium 0.045 0.018\nCopper 0.195 0.103\nLead 0.015 0.013\nNickel 0.197 0.130\nZinc 0.150 0.062\n(b) Subpart A—Cold Rolling Spent Lubricant BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy cold rolled\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy cold rolled\nChromium 0.166 0.068\nCopper 0.720 0.379\nLead 0.056 0.049\nNickel 0.727 0.481\nZinc 0.553 0.231\n(c) Subpart A—Drawing Spent Lubricant BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy drawn\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy drawn\nChromium 0.037 0.015\nCopper 0.161 0.085\nLead 0.012 0.011\nNickel 0.163 0.107\nZinc 0.124 0.051\n(d) Subpart A—Solution Heat Treatment BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy heat treated\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy heat treated\nChromium 0.284 0.116\nCopper 1.227 0.646\nLead 0.096 0.083\nNickel 1.240 0.820\nZinc 0.943 0.394\n(e) Subpart A—Extrusion Heat Treatment BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric Units—mg/off-kg of copper or copper alloy heat treated on an extrusion press\nEnglish Units—pounds per/1,000,000 off-pounds of copper or copper alloy heat treated on an extrusion press\nChromium 0.00088 0.00036\nCopper 0.003 0.0020\nLead 0.0003 0.00026\nNickel 0.003 0.002\nZinc 0.002 0.001\n(f) Subpart A—Annealing with Water BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric Units—mg/off-kg of copper or copper alloy annealed with water\nEnglish Units—pounds per/1,000,000 off-pounds of copper or copper alloy annealed with water\nChromium 0.545 0.223\nCopper 2.356 1.240\nLead 0.186 0.161\nNickel 2.380 1.574\nZinc 1.810 0.756\n(g) Subpart A—Annealing with Oil BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy annealed with oil\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy annealed with oil\nChromium 0 0\nCopper 0 0\nLead 0 0\nNickel 0 0\nZinc 0 0\n(h) Subpart A—Alkaline Cleaning Rinse BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy alkaline cleaned\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy alkaline cleaned\nChromium 1.854 0.758\nCopper 8.006 4.214\nLead 0.632 0.547\nNickel 8.090 5.351\nZinc 6.152 2.570\n(i) Subpart A—Alkaline Cleaning Rinse for Forged Parts BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric Units—mg/off-kg of copper or copper alloy forged parts alkaline cleaned\nEnglish Units—pounds per 1,000,000 off-pounds of copper or copper alloy forged parts alkaline cleaned\nChromium 5.562 2.275\nCopper 24.019 12.642\nLead 1.896 1.643\nNickel 24.272 16.055\nZinc 18.457 7.711\n(j) Subpart A—Alkaline Cleaning Bath BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric Units—mg/off-kg of copper or copper alloy alkaline cleaned\nEnglish Units—pounds per 1,000,000 off-pounds of copper or copper alloy alkaline cleaned\nChromium 0.020 0.0084\nCopper 0.088 0.046\nLead 0.0070 0.0060\nNickel 0.089 0.059\nZinc 0.068 0.028\n(k) Subpart A—Pickling Rinse BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric Units—mg/off-kg of copper or copper alloy pickled\nEnglish Units—pounds per 1,000,000 off-pounds of copper or copper alloy pickled\nChromium 0.574 0.235\nCopper 2.481 1.306\nLead 0.195 0.169\nNickel 2.507 1.658\nZinc 1.906 0.796\n(l) Subpart A—Pickling Rinse for Forged Parts BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric Units—mg/off-kg of copper or copper alloy forged parts pickled\nEnglish Units—pounds per 1,000,000 off-pounds of copper or copper alloy forged parts pickled\nChromium 1.723 0.705\nCopper 7.444 3.918\nLead 0.587 0.509\nNickel 7.522 4.975\nZinc 5.720 2.389\n(m) Subpart A—Pickling Bath BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy pickled\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy pickled\nChromium 0.051 0.020\nCopper 0.220 0.116\nLead 0.017 0.015\nNickel 0.222 0.147\nZinc 0.169 0.070\n(n) Subpart A—Pickling Fume Scrubber BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy pickled\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy pickled\nChromium 0.275 0.112\nCopper 1.189 0.626\nLead 0.093 0.081\nNickel 1.201 0.795\nZinc 0.913 0.381\n(o) Subpart A—Tumbling or Burnishing BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy tumbled or burnished\nEnglish units—pound per 1,000,000 off-pounds of copper or copper alloy tumbled or burnished\nChromium 0.256 0.104\nCopper 1.107 0.583\nLead 0.087 0.075\nNickel 1.119 0.740\nZinc 0.851 0.355\n(p) Subpart A—Surface Coating BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy surface coated\nEnglish units—pound per 1,000,000 off-pounds of copper or copper alloy surface coated\nChromium 0.326 0.133\nCopper 1.411 0.743\nLead 0.111 0.096\nNickel 1.426 0.943\nZinc 1.084 0.453\n(q) Subpart A—Miscellaneous Waste Streams BAT Effluent Limitations.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/off-kg of copper or copper alloy formed\nEnglish units—pounds per 1,000,000 off-pounds of copper or copper alloy formed\nChromium 0.009 0.003\nCopper 0.041 0.021\nLead 0.003 0.002\nNickel 0.041 0.027\nZinc 0.031 0.013","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 468—COPPER FORMING POINT SOURCE CATEGORY","Subpart A—Copper 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":"88a04cb2bc355310029013dc9097c9f637866dac2e1509d8342abd002dceb480","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-468.11","next":"us/40-cfr-468.13"},"notice":"GroundRules: Original legal text. Not legal advice."}