{"data":{"id":"us/40-cfr-63.45-63.49","jurisdiction":"us","citation":"40 CFR 63.45-63.49","heading":"§§ 63.45-63.49 [Reserved]","body":"","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 B—Requirements for Control Technology Determinations for Major Sources in Accordance With Clean Air Act Sections, Sections 112(g) and 112(j)"],"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":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.44","next":"us/40-cfr-63.50"},"notice":"GroundRules: Original legal text. Not legal advice."}