{"data":{"id":"us/40-cfr-63.11526","jurisdiction":"us","citation":"40 CFR 63.11526","heading":"What are the standards for new and existing ferroalloys production facilities?","body":"(a) You must not discharge to the atmosphere visible emissions (VE) from the control device that exceed 5 percent of accumulated occurrences in a 60-minute observation period.\n(b) You must not discharge to the atmosphere fugitive PM emissions from the furnace building containing the electrometallurgical operations that exhibit opacity greater than 20 percent (6-minute average), except for one 6-minute average per hour that does not exceed 60 percent.","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 YYYYYY—National Emission Standards for Hazardous Air Pollutants for Area Sources: Ferroalloys Production Facilities"],"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":"dee9804191dc56039cf7fc676752da650dc65d4d380383b90b1e61bc867637e9","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.11525","next":"us/40-cfr-63.11527"},"notice":"GroundRules: Original legal text. Not legal advice."}