{"data":{"id":"us/40-cfr-464.13","jurisdiction":"us","citation":"40 CFR 464.13","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 must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable, except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/62.3 million Sm 3 or lb/billion SCF of air scrubbed) effluent limitations for copper, lead, zinc, and total phenols. For non-continuous dischargers, annual average mass limitations and maximum day and maximum for monthly average concentration (mg/l) limitations shall apply. Concentration limitations and annual average mass limitations shall only apply to non-continuous dischargers.\n(a) Casting Cleaning Operations.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nkg/1,000 kkg (pounds per million pounds) of metal poured\nCopper (T) 0.0771 0.0421\nLead (T) 0.0791 0.039\nZinc (T) 0.114 0.0431\nMaximum for any 1 day Maximum for monthly average Annual average 1\n(mg/l) 2 (mg/l) 2\nCopper (T) 0.77 0.42 0.017\nLead (T) 0.79 0.39 0.022\nZinc (T) 1.14 0.43 0.027\n1 kg/1,000 kkg (pounds per million pounds) of metal poured.\n2 These concentrations must be multiplied by the ratio of (12/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.\n(b) Casting Quench Operations.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nkg/1,000 kkg (pounds per million pounds) of metal poured\nCopper (T) 0.0093 0.0051\nLead (T) 0.0096 0.0047\nZinc (T) 0.0138 0.0052\nMaximum for any 1 day Maximum for monthly average Annual average 1\n(mg/l) 2 (mg/l) 2\nCopper (T) 0.77 0.42 0.0021\nLead (T) 0.79 0.39 0.0027\nZinc (T) 1.14 0.43 0.0033\n1 kg/1,000 kkg (pounds per million pounds) of metal poured.\n2 These concentrations must be multiplied by the ratio of (1.45/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.\n(c) Die Casting Operations.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nkg/1,000 kkg (pounds per million pounds) of metal poured\nCopper (T) 0.0066 0.0036\nLead (T) 0.0068 0.0034\nZinc (T) 0.0098 0.0037\nTotal Phenols 0.0074 0.0026\nMaximum for any 1 day Maximum for monthly average Annual average 1\n(mg/l) 2 (mg/l) 2\nCopper (T) 0.77 0.42 0.0015\nLead (T) 0.79 0.39 0.0019\nZinc (T) 1.14 0.43 0.0023\nTotal Phenols 0.86 0.3 0.0017\n1 kg/1,000 kkg (pounds per million pounds) of metal poured.\n2 These concentrations must be multiplied by the ratio of (1.04/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.\n(d) Dust Collection Scrubber Operations.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nkg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed\nCopper (T) 0.231 0.126\nLead (T) 0.237 0.117\nZinc (T) 0.343 0.129\nTotal Phenols 0.258 0.09\nMaximum for any 1 day Maximum for monthly average Annual average 1\n(mg/l) 2 (mg/l) 2\nCopper (T) 0.77 0.42 0.0511\nLead (T) 0.79 0.39 0.0661\nZinc (T) 1.14 0.43 0.0811\nTotal Phenols 0.86 0.3 0.0601\n1 kg/62.3 million Sm3 (lb per billion SCF) of air scrubbed.\n2 These concentrations must be multiplied by the ratio of (0.036/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.\n(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.\n(f) Investment Casting.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nkg/1,000 kkg (pounds per million pounds) of metal poured\nCopper (T) 8.48 4.63\nLead (T) 8.7 4.3\nZinc (T) 12.6 4.74\nMaximum for any 1 day Maximum for monthly average Annual average 1\n(mg/l) 2 (mg/l) 2\nCopper (T) 0.77 0.42 1.87\nLead (T) 0.79 0.39 2.42\nZinc (T) 1.14 0.43 2.97\n1 kg/1,000 kkg (pounds per million pounds) of metal poured.\n2 These concentrations must be multiplied by the ratio of (1,320/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.\n(g) Melting Furnace Scrubber Operations.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nkg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed\nCopper (T) 3.01 1.64\nLead (T) 3.09 1.52\nZinc (T) 4.45 1.68\nTotal phenols 3.36 1.17\nMaximum for any 1 day Maximum for monthly average Annual average 1\n(mg/l) 2 (mg/l) 2\nCopper (T) 0.77 0.42 0.664\nLead (T) 0.79 0.39 0.859\nZinc (T) 1.14 0.43 1.05\nTotal phenols 0.86 0.3 0.781\n1 kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed\n2 These concentrations must be multiplied by the ratio of (0.468/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.\n(h) Mold Cooling Operations.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nkg/1,000 kkg (pounds per million pounds) of metal poured\nCopper (T) 0.297 0.162\nLead (T) 0.305 0.151\nZinc (T) 0.44 0.166\nMaximum for any 1 day Maximum for monthly average Annual average 1\n(mg/l) 2 (mg/l) 2\nCopper (T) 0.77 0.42 0.0656\nLead (T) 0.79 0.39 0.0849\nZinc (T) 1.14 0.43 0.104\n1 kg/1,000 kkg (pounds per million pounds) of metal poured.\n2 These concentrations must be multiplied by the ratio of (46.3/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 464—METAL MOLDING AND CASTING POINT SOURCE CATEGORY","Subpart A—Aluminum Casting 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":"1724932af944967da4a489ef06b55ab47df318cd99273dab77928e1f10015507","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-464.12","next":"us/40-cfr-464.14"},"notice":"GroundRules: Original legal text. Not legal advice."}