{"data":{"id":"us/40-cfr-63.9301","jurisdiction":"us","citation":"40 CFR 63.9301","heading":"What are my options for meeting the emission limits?","body":"You may use either a continuous parameter monitoring system (CPMS) or a continuous emission monitoring system (CEMS) to demonstrate compliance with the emission limitations. Continuous monitoring systems must meet the requirements in § 63.9306 (CPMS) and § 63.9307 (CEMS).","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 PPPPP—National Emission Standards for Hazardous Air Pollutants for Engine Test Cells/Stands"],"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":"a0b0604e3ca5ee80cf70556d649a7a81e383ff73c7e86a938828bbc689aec37e","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.9300","next":"us/40-cfr-63.9302"},"notice":"GroundRules: Original legal text. Not legal advice."}