{"data":{"id":"us/40-cfr-table-3-to-subpart-aaaa-of-part-60","jurisdiction":"us","citation":"40 CFR Table 3 to Subpart AAAA of Part 60","heading":"Table 3 to Subpart AAAA of Part 60—Requirements for Validating Continuous Emission Monitoring Systems (CEMS)","body":"For the following continuous emission monitoring systems Use the following methods in appendix A of this part to validate pollutant concentration levels Use the following methods in appendix A of this part to measure oxygen (or carbon dioxide)\n1. Nitrogen Oxides (Class I units only) a Method 7, 7A, 7B, 7C, 7D, or 7E Method 3 or 3A.\n2. Sulfur Dioxide Method 6 or 6C Method 3 or 3A.\n3. Carbon Monoxide Method 10, 10A, or 10B Method 3 or 3A.\na Class I units mean small municipal waste combustion units subject to this subpart that are located at municipal waste combustion plants with an aggregate plant combustion capacity more than 250 tons per day of municipal solid waste. See § 60.1465 for definitions.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 60—STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES","Subpart AAAA—Standards of Performance for Small Municipal Waste Combustion Units for Which Construction is Commenced After August 30, 1999 or for Which Modification or Reconstruction is Commenced After June 6, 2001"],"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":"224a787614d1c8f1b73ca88fed264025770bc943035faa65eefb1f15869120ef","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-2-to-subpart-aaaa-of-part-60","next":"us/40-cfr-table-4-to-subpart-aaaa-of-part-60"},"notice":"GroundRules: Original legal text. Not legal advice."}