{"data":{"id":"us/40-cfr-57.106","jurisdiction":"us","citation":"40 CFR 57.106","heading":"Expiration date.","body":"Each NSO shall state its expiration date. No NSO issued under this regulation shall expire later than January 1, 1988.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 57—PRIMARY NONFERROUS SMELTER ORDERS","Subpart A—General"],"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":"b0ead456352b9515d6af1a4baa7747c572f7ecd35640e7d81ca75bac3414dde2","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-57.105","next":"us/40-cfr-57.107"},"notice":"GroundRules: Original legal text. Not legal advice."}