{"data":{"id":"us/40-cfr-63.7186","jurisdiction":"us","citation":"40 CFR 63.7186","heading":"By what date must I conduct performance tests or other initial compliance demonstrations?","body":"For each process vent or storage tank vent emission limitation in § 63.7184 for which initial compliance is demonstrated by meeting a percent by weight HAP emissions reduction, or a HAP concentration limitation, you must conduct performance tests or an initial compliance demonstration within 180 days after the compliance date that is specified for your source in § 63.7183 and according to the provisions in § 63.7(a)(2).","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 BBBBB—National Emission Standards for Hazardous Air Pollutants for Semiconductor Manufacturing"],"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":"07cf38e780463c6a9b472e90b0f04d5401d57abd54a51416a81e6314995eede3","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.7185","next":"us/40-cfr-63.7187"},"notice":"GroundRules: Original legal text. Not legal advice."}