{"data":{"id":"us/40-cfr-421.185","jurisdiction":"us","citation":"40 CFR 421.185","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 primary and secondary germanium and gallium process wastewater introduced into a POTW must not exceed the following values:\n(a) Still liquor.\nPSES for the Primary and Secondary Germanium and Gallium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of germanium chlorinated\nArsenic 131.70 58.59\nLead 26.46 12.60\nZinc 91.98 38.43\nFluoride 2,205.00 1,254.00\n(b) Chlorinator wet air pollution control.\nPSES for the Primary and Secondary Germanium and Gallium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of germanium chlorinated\nArsenic 27.530 12.250\nLead 5.531 2.634\nZinc 19.230 8.034\nFluoride 461.000 262.100\n(c) Germanium hydrolysis filtrate.\nPSES for the Primary and Secondary Germanium and Gallium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of germanium hydrolyzed\nArsenic 39.440 17.550\nLead 7.925 3.774\nZinc 27.550 11.510\nFluoride 660.500 375.500\n(d) Acid wash and rinse water.\nPSES for the Primary and Secondary Germanium and Gallium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of germanium washed\nArsenic 325.50 144.80\nLead 65.40 31.14\nZinc 227.40 94.99\nFluoride 5,450.00 3,099.00\n(e) Gallium hydrolysis filtrate.\nPSES for the Primary and Secondary Germanium and Gallium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of gallium hydrolyzed\nArsenic 70.450 31.350\nLead 14.160 6.742\nZinc 49.220 20.560\nFluoride 1,180.000 670.800\n(f) Solvent extraction raffinate.\nPSES for the Primary and Secondary Germanium and Gallium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of gallium produced by solvent extraction\nArsenic 39.330 17.500\nLead 7.904 3.764\nZinc 27.480 11.480\nFluoride 658.700 374.500","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 P—Primary and Secondary Germanium and Gallium 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":"bc66fada72b1a7959a0da7b4239541bc480fc9fd4e53100b316006ea8dafd17e","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.184","next":"us/40-cfr-421.186"},"notice":"GroundRules: Original legal text. Not legal advice."}