{"data":{"id":"us/40-cfr-467.35","jurisdiction":"us","citation":"40 CFR 467.35","heading":"Pretreatment standards for existing sources.","body":"(a) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.\n(b) There shall be no discharge allowance for wastewater pollutants from the degassing operation.\n(c) The mass of wastewater pollutants from the core and ancillary operations except those identified in paragraph (b), introduced into a POTW shall not exceed the following values:\nSubpart C\nCore\nPollutant or pollutant property PSES\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of extruded\nChromium 0.15 0.061\nCyanide 0.098 0.041\nZinc 0.49 0.21\nTTO 0.23\nOil and grease (alternate monitoring parameter) 18 8.8\nSubpart C\nExtrusion Press Leakage\nPollutant or pollutant property PSES\nMaximum for any 1 day Maximum for monthly average\nmg/off-kg (lb/million off-lbs) of extruded\nChromium 0.65 0.27\nCyanide 0.43 0.18\nZinc 2.16 0.90\nTTO 1.02\nOil and grease (alternate monitoring parameter) 77 39\nSubpart C\nDirect Chill Casting Contact Cooling Water\nPollutant or pollutant property PSES\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\nTTO 0.92\nOil and grease (alternate monitoring parameter) 69 35\nSubpart C\nPress Heat Treatment Contact Cooling Water\nPollutant or pollutant property PSES\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\nTTO 1.41\nOil and grease (alternate monitoring parameter) 110 53\nSubpart C\nSolution Heat Treatment Contact Cooling Water\nPollutant or pollutant property PSES\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\nTTO 1.41\nOil and grease (alternate monitoring parameter) 110 53\nSubpart C\nCleaning or Etching Bath\nPollutant or pollutant property PSES\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 0.26 0.109\nTTO 0.124\nOil and grease (alternate monitoring parameter) 9.3 4.7\nSubpart C\nCleaning or Etching Rinse\nPollutant or pollutant property PSES\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\nTTO 2.7\nOil \u0026 Grease (alternate monitoring parameter) 200 100\nSubpart C\nCleaning or Etching Scrubber Liquor\nPollutant or pollutant property PSES\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\nTTO 1.34\nOil and grease (alternate monitoring parameter) 100 50","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":"168a7b87e3b4ba26090d3bc096e67a4f66219afc7634781891a7cbef71701f56","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-467.34","next":"us/40-cfr-467.36"},"notice":"GroundRules: Original legal text. Not legal advice."}