{"data":{"id":"us/40-cfr-461.64","jurisdiction":"us","citation":"40 CFR 461.64","heading":"Pretreatment standards for existing sources (PSES).","body":"(a) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources listed below:\n(1) Subpart F—Silver Chloride Cathodes—Chemically Reduced—PSES.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/kg of silver processed\nEnglish units—pounds per 1,000,000 pounds of silver processed\nLead 1,032.36 491.60\nSilver 1,007.78 417.86\n(2) Subpart F—Silver Chloride Cathodes—Electrolytic—PSES.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/kg of silver processed\nEnglish units—pounds per 1,000,000 pounds of silver processed\nLead 60.9 29.0\nSilver 59.5 24.7\n(3) Subpart F—Cell Testing—PSES.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/kg of cells produced\nEnglish units—pounds per 1,000,000 pounds of cells produced\nLead 22.1 10.5\nSilver 21.6 8.9\n(4) Subpart F—Floor and Equipment Wash—PSES.\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nMetric units—mg/kg of cells produced\nEnglish units—pounds per 1,000,000 pounds of cells produced\nLead 0.039 0.018\nSilver 0.038 0.015\n(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 461—BATTERY MANUFACTURING POINT SOURCE CATEGORY","Subpart F—Magnesium 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":"cf833422a18ac9206e2ea4091616a2b0d9df32fc9f7206be758a0bdfcc65fb37","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-461.63","next":"us/40-cfr-461.65"},"notice":"GroundRules: Original legal text. Not legal advice."}