{"data":{"id":"us/40-cfr-table-3-to-subpart-qqq-of-part-63","jurisdiction":"us","citation":"40 CFR Table 3 to Subpart QQQ of Part 63","heading":"Table 3 to Subpart QQQ of Part 63—2010 Toxic Equivalency Factors (TEFs)","body":"Table 3 to Subpart QQQ of Part 63—2010 Toxic Equivalency Factors (TEFs)\nCongener TEF (mammals)\n2,3,7,8-Te CDD 1\n1,2,3,7,8-Pe CDD 1\n1,2,3,4,7,8-HxCDD 0.1\n1,2,3,6,7,8-HxCDD 0.1\n1,2,3,7,8,9-HxCDD 0.1\n1,2,3,4,6,7,8-HpCDD 0.01\nOCDD 0.0003\n2,3,7,8-Te CDF 0.1\n1,2,3,7,8-Pe CDF 0.03\n2,3,4,7,8-Pe CDF 0.3\n1,2,3,4,7,8-HxCDF 0.1\n1,2,3,6,7,8-HxCDF 0.1\n2,3,4,6,7,8-HxCDF 0.1\n1,2,3,7,8,9-HxCDF 0.1\n1,2,3,4,6,7,8-HpCDF 0.01\n1,2,3,4,7,8,9-HpCDF 0.01\nOCDF 0.0003","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 QQQ—National Emission Standards for Hazardous Air Pollutants for Primary Copper Smelting"],"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":"c9393742a62d5aa217cd29e688c702ac37367561ff8a15a077560700d953f8d3","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-2-to-subpart-qqq-of-part-63","next":"us/40-cfr-table-4-to-subpart-qqq-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}