{"data":{"id":"us/40-cfr-442.21","jurisdiction":"us","citation":"40 CFR 442.21","heading":"Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).","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 application of BPT:\nTable—Effluent Limitations\nRegulated parameter Maximum daily 1 Maximum monthly avg. 1\nBOD5 61 22\nTSS 58 26\nOil and grease (HEM) 36 16\nFluoranthene 0.076\nPhenanthrene 0.34\npH (2) (2)\n1 Mg/L (ppm).\n2 Within 6 to 9 at all times.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 442—TRANSPORTATION EQUIPMENT CLEANING POINT SOURCE CATEGORY","Subpart B—Rail Tank Cars Transporting Chemical and Petroleum Cargos"],"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":"4b7d288aa1d79060b4f9f864fb422ab51f13d1e0a5161f456b2f7eaaf30b5690","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-442.20","next":"us/40-cfr-442.22"},"notice":"GroundRules: Original legal text. Not legal advice."}