{"data":{"id":"us/40-cfr-421.213","jurisdiction":"us","citation":"40 CFR 421.213","heading":"Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.","body":"Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:\n(a) Molybdenum sulfide leachate.\nBAT Limitations for the Primary Molybdenum and Rhenium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds million pounds) of molybdenum sulfide leached\nArsenic 0.644 0.287\nLead 0.130 0.060\nNickel 0.255 0.171\nSelenium 0.380 0.171\nMolybdenum [Reserved] [Reserved]\nAmmonia (as N) 61.720 27.130\nFluoride 16.210 9.214\n(b) Roaster SO2 scrubber.\nBAT Limitations for the Primary Molybdenum and Rhenium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per/million pounds) of molybdenum sulfide roasted\nArsenic 2.334 1.041\nLead 0.470 0.218\nNickel 0.924 0.621\nSelenium 1.377 0.621\nMolybdenum [Reserved] [Reserved]\nAmmonia (as N) 223.800 98.390\nFluoride 58.770 33.410\n(c) Molybdic oxide leachate.\nBAT Limitations for the Primary Molybdenum and Rhenium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per/million pounds) of molybdenum contained in molybdic oxide leached\nArsenic 16.100 7.182\nLead 3.244 1.506\nNickel 6.371 4.286\nSelenium 9.499 4.286\nMolybdenum [Reserved] [Reserved]\nAmmonia (as N) 1,544.000 678.800\nFluoride 405.400 230.500\n(d) Hydrogen reduction furnace scrubber.\nBAT Limitations for the Primary Molybdenum and Rhenium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per/million pounds) of molybdenum metal powder produced\nArsenic 3.183 1.420\nLead 0.641 0.298\nNickel 1.260 0.847\nSelenium 1.878 0.847\nMolybdenum [Reserved] [Reserved].\nAmmonia (as N) 305.300 134.200\nFluoride 80.150 45.570\n(e) Depleted rhenium scrubbing solution.\nBAT Limitations for the Primary Molybdenum and Rhenium Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per/million pounds) of molybdenum sulfide roasted\nArsenic 0.995 0.444\nLead 0.201 0.093\nNickel 0.394 0.265\nSelenium 0.587 0.265\nMolybdenum [Reserved] [Reserved].\nAmmonia (as N) 95.440 41.960\nFluoride 25.060 14.250","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 S—Primary Molybdenum and Rhenium 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":"34cd84e167ce79c8ee88630ce55c7f3644c2e8f2e122001fcf0b0970be2eefd0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.212","next":"us/40-cfr-421.214"},"notice":"GroundRules: Original legal text. Not legal advice."}