{"data":{"id":"us/40-cfr-421.83","jurisdiction":"us","citation":"40 CFR 421.83","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 shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:\n(a) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of zinc reduced\nCadmium .334 .134\nCopper 2.135 1.018\nLead .467 .217\nZinc 1.702 .701\n(b) Subpart H—Preleach of Zinc Concentrates.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of concentrate leached\nCadmium .180 .072\nCopper 1.153 .550\nLead .252 .117\nZinc .919 .378\n(c) Subpart H—Leaching Wet Air Pollution Control.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of zinc processed through leaching\nCadmium .000 .000\nCopper .000 .000\nLead .000 .000\nZinc .000 .000\n(d) Subpart H—Electrolyte Bleed Wastewater.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of cathode zinc produced\nCadmium .086 .035\nCopper .553 .264\nLead .121 .056\nZinc .441 .182\n(e) Subpart H—Cathode and Anode Wash Wastewater.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of cathode zinc produced\nCadmium .150 .060\nCopper .961 .458\nLead .210 .098\nZinc .766 .315\n(f) Subpart H—Casting Wet Air Pollution Control.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of zinc cast\nCadmium .051 .021\nCopper .329 .157\nLead .072 .033\nZinc .262 .108\n(g) Subpart H—Casting Contact Cooling.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of zinc cast\nCadmium .036 .014\nCopper .232 .110\nLead .051 .024\nZinc .185 .076\n(h) Subpart H—Cadmium Plant Wastewater.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of cadmium produced\nCadmium 1.234 .494\nCopper 7.899 3.765\nLead 1.728 .802\nZinc 6.295 2.592","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 H—Primary Zinc 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":"3b6d0e716f18b579e4e2a464c6dd763dcdb916369b0d487a03c77cf4489e194e","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.82","next":"us/40-cfr-421.84"},"notice":"GroundRules: Original legal text. Not legal advice."}