{"data":{"id":"us/40-cfr-421.190","jurisdiction":"us","citation":"40 CFR 421.190","heading":"Applicability: Description of the secondary indium subcategory.","body":"The provisions of this subpart are applicable to discharges resulting from the production of indium at secondary indium facilities processing spent electrolyte solutions and scrap indium metal raw materials.","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 Q—Secondary Indium 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":"515b59b288673063bc651b5bca61313fae0c110884b1a4446d1f59846011b0c1","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.187","next":"us/40-cfr-421.191"},"notice":"GroundRules: Original legal text. Not legal advice."}