{"data":{"id":"us/40-cfr-63.9880","jurisdiction":"us","citation":"40 CFR 63.9880","heading":"What is the purpose of this subpart?","body":"This subpart establishes national emission standards for hazardous air pollutants (NESHAP) for primary magnesium refineries. This subpart also establishes requirements to demonstrate initial and continuous compliance with all applicable emission limitations, work practice standards, and operation and maintenance requirements.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart TTTTT—National Emissions Standards for Hazardous Air Pollutants for Primary Magnesium Refining"],"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":"3a04b45a2cd12553fc1e2b4ce89e6e153c047525c145c2e32006651d80561c2b","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-11-to-subpart-sssss-of-part-63","next":"us/40-cfr-63.9881"},"notice":"GroundRules: Original legal text. Not legal advice."}