{"data":{"id":"us/40-cfr-421.135","jurisdiction":"us","citation":"40 CFR 421.135","heading":"Pretreatment standards for existing sources.","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. The mass of wastewater pollutants in secondary lead process wastewater introduced into a POTW shall not exceed the following values:\n(a) Subpart M—Battery Cracking.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead scrap produced\nAntimony 1.299 .579\nArsenic .936 .384\nLead .189 .087\nZinc .687 .283\nAmmonia (as N) .000 .000\n(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead produced from smelting\nAntimony 5.038 2.245\nArsenic 3.628 1.488\nLead .731 .339\nZinc 2.662 1.096\nAmmonia (as N) .000 .000\n(c) Subpart M—Kettle Wet Air Pollution Control.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead produced from refining\nAntimony .087 .039\nArsenic .063 .026\nLead .013 .006\nZinc .046 .019\nAmmonia (as N) .000 .000\n(d) Subpart M—Lead Paste Desulfurization.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead processed through desulfurization\nAntimony .000 .000\nArsenic .000 .000\nLead .000 .000\nZinc .000 .000\nAmmonia (as N) .000 .000\n(e) Subpart M—Casting Contact Cooling.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead cast\nAnimony .042 .019\nArsenic .031 .013\nLead .006 .003\nZinc .022 .009\nAmmonia (as N) .000 .000\n(f) Subpart M—Truck Wash.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead produced from smelting\nAntimony .041 .018\nArsenic .029 .012\nLead .006 .003\nZinc .021 .009\nAmmonia (as N) .000 .000\n(g) Subpart M—Facility Washdown.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead produced from smelting\nAntimony .000 .000\nArsenic .000 .000\nLead .000 .000\nZinc .000 .000\nAmmonia (as N) .000 .000\n(h) Subpart M—Battery Case Classification.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead scrap produced\nAntimony .000 .000\nArsenic .000 .000\nLead .000 .000\nZinc .000 .000\nAmmonia (as N) .000 .000\n(i) Subpart M—Employee Handwash.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead produced from smelting\nAntimony .052 .023\nArsenic .038 .015\nLead .008 .004\nZinc .028 .011\nAmmonia (as N) .000 .000\n(j) Subpart M—Employee Respirator Wash.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead produced from smelting\nAntimony .085 .038\nArsenic .061 .025\nLead .012 .006\nZinc .045 .018\nAmmonia (as N) .000 .000\n(k) Subpart M—Laundering of Uniforms.\nPSES\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of lead produced from smelting\nAntimony .247 .110\nArsenic .178 .073\nLead .036 .017\nZinc .131 .054\nAmmonia (as N) .000 .000","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","Subpart M—Secondary Lead 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":"3f96923cec6a86dc550f5101e845b2b55faee2f97905f27dd9dee486b735f5b0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.134","next":"us/40-cfr-421.136"},"notice":"GroundRules: Original legal text. Not legal advice."}