{"data":{"id":"us/40-cfr-467.33","jurisdiction":"us","citation":"40 CFR 467.33","heading":"Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.","body":"(a) 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:\n(b) There shall be no discharge allowance for wastewater pollutants from the degassing operation.\n(c) The discharge of wastewater pollutants from the core and ancillary operation except those in (b) of this section, shall not exceed the values set forth below:\nSubpart C\nCore\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum extruded\nChromium 0.15 0.061\nCyanide 0.098 0.041\nZinc 0.49 0.21\nAluminum 2.19 1.09\nSubpart C\nExtrusion Press Leakage\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum extruded\nChromium 0.65 0.27\nCyanide 0.43 0.18\nZinc 2.16 0.90\nAluminum 9.51 4.73\nSubpart C\nDirect Chill Casting Contact Cooling Water\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum cast\nChromium 0.59 0.24\nCyanide 0.39 0.16\nZinc 1.94 0.81\nAluminum 8.55 4.26\nSubpart C\nPress Heat Treatment Contact Cooling Water\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum quenched\nChromium 0.90 0.37\nCyanide 0.59 0.25\nZinc 2.98 1.25\nAluminum 13.10 6.52\nSubpart C\nSolution Heat Treatment Contact Cooling Water\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum quenched\nChromium 0.90 0.37\nCyanide 0.59 0.25\nZinc 2.98 1.25\nAluminum 13.10 6.52\nSubpart C\nCleaning or Etching Bath\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum cleaned or etched\nChromium 0.079 0.032\nCyanide 0.052 0.022\nZinc 0.262 0.109\nAluminum 1.15 0.58\nSubpart C\nCleaning or Etching Rinse\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum cleaned or etched\nChromium 1.7 0.7\nCyanide 1.2 0.5\nZinc 5.7 2.4\nAluminum 25 13\nSubpart C\nCleaning or Etching Scrubber Liquor\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of aluminum cleaned or etched\nChromium 0.85 0.35\nCyanide 0.56 0.23\nZinc 2.82 1.18\nAluminum 12.43 6.19","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 467—ALUMINUM FORMING POINT SOURCE CATEGORY","Subpart C—Extrusion 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":"5916fbd9b9524940944fac85658ff912ba81078f54c054afc591a09da9e2b62d","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-467.32","next":"us/40-cfr-467.34"},"notice":"GroundRules: Original legal text. Not legal advice."}