{"data":{"id":"us/40-cfr-421.100","jurisdiction":"us","citation":"40 CFR 421.100","heading":"Applicability: Description of the primary tungsten subcategory.","body":"The provisions of this subpart are applicable to discharges resulting from the production of tungsten at primary tungsten facilities.","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 J—Primary Tungsten 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":"062cd9b916dc75fc01cdffbd5d0e43fe4b5d68a2ebfcde9e0e55afc718f4c91a","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.97","next":"us/40-cfr-421.101"},"notice":"GroundRules: Original legal text. Not legal advice."}