{"data":{"id":"us/40-cfr-421.53","jurisdiction":"us","citation":"40 CFR 421.53","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 E—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 copper cast\nArsenic .692 .309\nCopper .638 .304\nNickel .274 .184\n(b) Subpart E—Anode and Cathode Rinse.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of cathode copper production\nArsenic .000 .000\nCopper .000 .000\nNickel .000 .000\n(c) Subpart E—Spent Electrolyte.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of copper cathode production\nArsenic .068 .031\nCopper .063 .030\nNickel .027 .018\n(d) Subpart E—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 casting production\nArsenic .000 .000\nCopper .000 .000\nNickel .000 .000\n(e) Subpart E—By-Product Recovery.\nBAT Effluent Limitations\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of product recovered from electrolytic slimes processing\nArsenic .000 .000\nCopper .000 .000\nNickel .000 .000","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 E—Primary Electrolytic Copper Refining 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":"4dd2583f42a8941834bdae15691723b7847c00d1473be3d983cf5ffb9621f107","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.52","next":"us/40-cfr-421.54"},"notice":"GroundRules: Original legal text. Not legal advice."}