{"data":{"id":"us/40-cfr-466.34","jurisdiction":"us","citation":"40 CFR 466.34","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.\nSubpart C—PSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMilligrams per liter (mg/l)\nChromium 0.42 0.17\nLead 0.15 0.13\nNickel 1.41 1.00\nZinc 1.33 0.56\n(b) In cases where POTW find it necessary to impose mass pretreatment standards the following equivalent mass standards are provided:\nSubpart C—PSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetal preparation Coating operation Metal preparation Coating operation\nMetric units—mg/m2 of area processed or coated\nChromium 16.34 0.53 6.62 0.22\nLead 5.84 0.19 5.06 0.16\nNickel 54.85 1.78 38.9 1.26\nZinc 51.74 1.68 21.79 1.71\nEnglish units—pounds per 1 million ft2 of area processed or coated\nChromium 3.35 0.11 1.36 0.05\nLead 1.20 0.04 1.04 0.03\nNickel 11.24 0.37 7.97 0.25\nZinc 10.6 0.35 4.46 0.35","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 466—PORCELAIN ENAMELING POINT SOURCE CATEGORY","Subpart C—Aluminum Basis Material 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":"50cca9ae9f5c0711328842ae1bcad8272f8e6fa9f4d90c2a29e4307b0c39f469","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-466.33","next":"us/40-cfr-466.35"},"notice":"GroundRules: Original legal text. Not legal advice."}