{"data":{"id":"us/40-cfr-420.103","jurisdiction":"us","citation":"40 CFR 420.103","heading":"Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).","body":"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(a) Cold rolling mills—(1) Recirculation—single stand.\nSubpart J\nPollutant or pollutant property BAT effluent limitations\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 BAT effluent limitations\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 BAT effluent limitations\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 cotreated with descaling or combination acid pickling wastewaters.\n(4) Direct application—single stand.\nSubpart J\nPollutant or pollutant property BAT effluent limitations\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 BAT effluent limitations\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\nNaphthalene 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—(1) Using water.\nSubpart J\nPollutant or pollutant property BAT effluent limitations\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 BAT effluent limitations\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":"021f00e2a4a357674a7dbc28aa742976557a0f47f4713478e34e8d791671c8b7","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-420.102","next":"us/40-cfr-420.104"},"notice":"GroundRules: Original legal text. Not legal advice."}