{"data":{"id":"us/40-cfr-63.883","jurisdiction":"us","citation":"40 CFR 63.883","heading":"Monitoring requirements.","body":"You must meet all applicable monitoring requirements contained in subpart NNN of this part.","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 NN—National Emission Standards for Hazardous Air Pollutants for Wool Fiberglass Manufacturing at Area Sources"],"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":"059cbaccdf4beb40baacb226a0384ded78e18e8f0d67741f012dbb4903e80cf7","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.882","next":"us/40-cfr-63.884"},"notice":"GroundRules: Original legal text. Not legal advice."}