{"data":{"id":"us/40-cfr-420.105","jurisdiction":"us","citation":"40 CFR 420.105","heading":"Pretreatment standards for existing sources (PSES).","body":"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(a) Cold rolling—(1) Recirculation—single stand.\nSubpart J\nPollutant or pollutant property Pretreatment standards for existing sources\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nChromium 1 0.0000209 0.0000084\nLead 0.0000094 0.0000031\nNickel 1 0.0000188 0.0000063\nZinc 0.0000063 0.0000021\nNaphthalene 0.0000021\nTetrachloroethylene 0.0000031\n1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.\n(2) Recirculation—multiple stands.\nSubpart J\nPollutant or pollutant property Pretreatment standards for existing sources\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nChromium 1 0.000104 0.0000418\nLead 0.0000469 0.0000156\nNickel 1 0.0000939 0.0000313\nZinc 0.0000313 0.0000104\nNaphthalene 0.0000104\nTetrachloroethylene 0.0000156\n1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.\n(3) Combination.\nSubpart J\nPollutant or pollutant property Pretreatment standards for existing sources\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nChromium 1 0.00125 0.000501\nLead 0.000563 0.000188\nNickel 1 0.00113 0.000376\nZinc 0.000376 0.000125\nNaphthalene 0.000125\nTetrachloroethylene 0.000188\n1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.\n(4) Direct application—single stand.\nSubpart J\nPollutant or pollutant property Pretreatment standards for existing sources\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nChromium 1 0.000376 0.000150\nLead 0.000169 0.0000563\nNickel 1 0.000338 0.000113\nZinc 0.000113 0.0000376\nNaphthalene 0.0000376\nTetrachloroethylene 0.0000563\n1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.\n(5) Direct application—multiple stands.\nSubpart J\nPollutant or pollutant property Pretreatment standards for existing sources\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nChromium 1 0.00167 0.000668\nLead 0.000751 0.000250\nNickel 1 0.00150 0.000501\nZinc 0.000501 0.000167\nNapthalene 0.000167\nTetrachloroethylene 0.000250\n1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.\n(b) Cold worked pipe and tube mills—(1) Using water.\nSubpart J\nPollutant or pollutant property Pretreatment standards for existing sources\nMaximum for any 1 day Average of daily values for 30 consecutive days\nkg/kkg (pounds per 1,000 lb) of product\nChromium 1 0.0000209 0.0000084\nLead 0.0000094 0.0000031\nNickel 1 0.0000188 0.0000063\nZinc 0.0000063 0.0000021\n1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold forming wastewaters are treated with descaling or combination acid pickling wastewaters.\n(2) Using oil solutions.\nSubpart J\nPollutant or pollutant property Pretreatment standards for existing sources\nMaximum for any 1 day Average of daily values for 30 consecutive days\nkg/kkg (pounds per 1,000 lb) of product\nChromium 1 0.0000209 0.0000084\nLead 0.0000094 0.0000031\nNickel 1 0.0000188 0.0000063\nZinc 0.0000063 0.0000021\nNaphthalene 0.0000021\nTetrachloroethylene 0.0000031\n1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold forming wastewaters are treated with descaling or combination acid pickling wastewaters.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 420—IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY","Subpart J—Cold Forming 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":"15a2966e60640a023ca607a6af786ec0a41af901ba754b9cdbf0fc16f25cbb26","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-420.104","next":"us/40-cfr-420.106"},"notice":"GroundRules: Original legal text. Not legal advice."}