{"data":{"id":"us/40-cfr-61.22","jurisdiction":"us","citation":"40 CFR 61.22","heading":"Standard.","body":"Emissions of radon-222 to the ambient air from an underground uranium mine shall not exceed those amounts that would cause any member of the public to receive in any year an effective dose equivalent of 10 mrem/y.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 61—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS","Subpart B—National Emission Standards for Radon Emissions From Underground Uranium Mines"],"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":"6c07179685c1f3944b9ffe334b109d092fbd9381abdd4ede16aa8040266f59b9","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-61.21","next":"us/40-cfr-61.23"},"notice":"GroundRules: Original legal text. Not legal advice."}