{"data":{"id":"us/40-cfr-439.16","jurisdiction":"us","citation":"40 CFR 439.16","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 must continue achieving the standards for cyanide specified in paragraph (c) of this section and must achieve the following standards by September 21, 2001:\nPretreatment Standards (PSES)\nRegulated parameter Maximum daily 1 Maximum monthly average 1\nAmmonia (as N) 2 84.1 29.4\nAcetone 20.7 8.2\n4-methyl-2-pentanone 20.7 8.2\nIsobutyraldehyde 20.7 8.2\nn-Amyl acetate 20.7 8.2\nn-Butyl acetate 20.7 8.2\nEthyl acetate 20.7 8.2\nIsopropyl acetate 20.7 8.2\nMethyl formate 20.7 8.2\nIsopropyl ether 20.7 8.2\nTetrahydrofuran 9.2 3.4\nBenzene 3.0 0.7\nToluene 0.3 0.2\nXylenes 3.0 0.7\nn-Heptane 3.0 0.7\nn-Hexane 3.0 0.7\nMethylene chloride 3.0 0.7\nChloroform 0.1 0.03\n1,2-dichloroethane 20.7 8.2\nChlorobenzene 3.0 0.7\no-Dichlorobenzene 20.7 8.2\nDiethyl amine 255.0 100.0\nTriethyl amine 255.0 100.0\n1 mg/L (ppm)\n2 Not applicable to sources that discharge to a POTW with nitrification capability.\n(b) Sources that discharge to a POTW with nitrification capability (defined at § 439.1(i)) are not required to achieve the pretreatment standard for ammonia (as N).\n(c) The limitations for cyanide are the same as specified in § 439.12(e), (f) and (g).","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY","Subpart A—Fermentation Products"],"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":"d01ccc04656085cbd0b0b046632de0c4b753e6dbec341abcbeafc12bb4b46007","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-439.15","next":"us/40-cfr-439.17"},"notice":"GroundRules: Original legal text. Not legal advice."}