{"data":{"id":"us/40-cfr-table-3-to-subpart-aaaaaaa-of-part-63","jurisdiction":"us","citation":"40 CFR Table 3 to Subpart AAAAAAA of Part 63","heading":"Table 3 to Subpart AAAAAAA of Part 63—Test Methods","body":"For * * * You must use * * *\n1. Selecting the sampling locations a and the number of traverse points EPA test method 1 or 1A in appendix A to part 60.\n2. Determining the velocity and volumetric flow rate EPA test method 2, 2A, 2C, 2D, 2F, or 2G, as appropriate, in appendix A to part 60.\n3. Determining the gas molecular weight used for flow rate determination EPA test method 3, 3A, 3B, as appropriate, in appendix A to part 60.\n4. Measuring the moisture content of the stack gas EPA test method 4 in appendix A to part 60.\n5. Measuring the PM emissions EPA test method 5A in appendix A to part 60.\n6. Measuring the PAH emissions EPA test method 23.\na The sampling locations must be located at the outlet of the process equipment (or control device, if applicable), prior to any releases to the atmosphere.\nb When using EPA Method 23, the toluene extraction step specified in section 3.1.2.1 of the method should be omitted.","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 AAAAAAA—National Emission Standards for Hazardous Air Pollutants for Area Sources: Asphalt Processing and Asphalt Roofing 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":"485d23e50989f2dd94c298967911c25dce5b840d087162296f34ed48a61fb6b3","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-2-to-subpart-aaaaaaa-of-part-63","next":"us/40-cfr-table-4-to-subpart-aaaaaaa-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}