{"data":{"id":"us/40-cfr-63.8585","jurisdiction":"us","citation":"40 CFR 63.8585","heading":"By what date must I conduct performance tests?","body":"For each affected source that is subject to the emission limits specified in Table 1 to this subpart, you must conduct performance tests within 180 calendar days after the compliance date that is specified for your source in § 63.8545 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 KKKKK—National Emission Standards for Hazardous Air Pollutants for Clay Ceramics 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":"41acf1817e97cbee95b84be2a1d8d7ef39a6e550792f40ed8a2539a8d20b7868","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.8575","next":"us/40-cfr-63.8590"},"notice":"GroundRules: Original legal text. Not legal advice."}