{"data":{"id":"us/40-cfr-421.92","jurisdiction":"us","citation":"40 CFR 421.92","heading":"Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.","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 practicable control technology currently available (BPT):\nSubpart I—Metallurgical Acid Plant\nPollutant or pollutant property BPT effluent limitations\nMaximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds of 100% sulfuric acid capacity\nCadmium 0.180 0.090\nCopper 5.000 2.000\nLead 1.800 0.790\nZinc 3.600 0.900\nFluoride 1 212.800 121.000\nMolybdenum 1 40.180 20.790\nTotal suspended solids 304.000 152.000\npH 2 2\n1 For Molybdenum Acid Plants Only.\n2 Within the range of 6.0 to 9.0 at all times.","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 I—Metallurgical Acid Plants 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":"a1868c14c9618695df1bf35c612bc003e914e204099cb95c39bf3d12004787f1","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.91","next":"us/40-cfr-421.93"},"notice":"GroundRules: Original legal text. Not legal advice."}