{"data":{"id":"us/40-cfr-421.250","jurisdiction":"us","citation":"40 CFR 421.250","heading":"Applicability: Description of the primary precious metals and mercury subcategory.","body":"The provisions of this subpart are applicable to discharges resulting from the production of gold, silver, or mercury by primary precious metals and mercury 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 W—Primary Precious Metals and Mercury 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":"66598fefbec2e2fcfcaa8a01bd82b840c29bb809fe1ae88186327e11b00d2e57","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.247","next":"us/40-cfr-421.251"},"notice":"GroundRules: Original legal text. Not legal advice."}