{"data":{"id":"us/40-cfr-63.9280","jurisdiction":"us","citation":"40 CFR 63.9280","heading":"What is the purpose of subpart PPPPP?","body":"This subpart PPPPP establishes national emission standards for hazardous air pollutants (NESHAP) for engine test cells/stands located at major sources of hazardous air pollutants (HAP) emissions. This subpart also establishes requirements to demonstrate initial and continuous compliance with the emission limitations contained in this NESHAP.","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":"2cdb937eaba1e608aaf00953358ed1dd1eccd97cdadae206ec993da26c310575","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-7-to-subpart-nnnnn-of-part-63","next":"us/40-cfr-63.9285"},"notice":"GroundRules: Original legal text. Not legal advice."}