{"data":{"id":"us/40-cfr-table-20-to-subpart-uuu-of-part-63","jurisdiction":"us","citation":"40 CFR Table 20 to Subpart UUU of Part 63","heading":"Table 20 to Subpart UUU of Part 63—Continuous Compliance With Organic HAP Emission Limits for Catalytic Reforming Units","body":"As stated in § 63.1566(c)(1), you shall meet each requirement in the following table that applies to you.\nFor each applicable process vent for a new or existing catalytic reforming unit . . . For this emission limit . . . You shall demonstrate continuous compliance during initial catalyst depressuring and catalyst purging operations by . . .\n1. Option 1 Vent emissions from your process vent to a flare On and after January 30, 2019, meeting the requirements of § 63.670. Prior to January 30, 2019, maintaining visible emissions from a flare below a total of 5 minutes during any 2 consecutive hours, or meeting the requirements of § 63.670.\n2. Option 2 Reduce uncontrolled emissions of total organic compounds (TOC) or nonmethane TOC from your process vent by 98 percent by weight using a control device or to a concentration of 20 ppmv (dry basis as hexane), corrected to 3 percent oxygen, whichever is less stringent. Maintaining a 98 percent by weight emission reduction of TOC or nonmethane TOC; or maintaining a TOC or nonmethane TOC concentration of not more than 20 ppmv (dry basis as hexane), corrected to 3 percent oxygen, whichever is less stringent.","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 UUU—National Emission Standards for Hazardous Air Pollutants for Petroleum Refineries: Catalytic Cracking Units, Catalytic Reforming Units, and Sulfur Recovery Units"],"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":"bc77f7052d9b58a67bf553f8cc93783ec7f4c62b8c29ca27b6df4fa61ffbaa4f","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-19-to-subpart-uuu-of-part-63","next":"us/40-cfr-table-21-to-subpart-uuu-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}