{"data":{"id":"us/40-cfr-table-11-to-subpart-aaaaa-of-part-63","jurisdiction":"us","citation":"40 CFR Table 11 to Subpart AAAAA of Part 63","heading":"Table 11 to Subpart AAAAA of Part 63—Toxicity Equivalence Factors (TEFs) for Human Health Risk Assessment of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Dioxin-Like Polychlorinated Biphenyls","body":"Dioxin/Furan 2005 TEFs 1\n2,3,7,8-TCDD 1\n1,2,3,7,8-PeCDD 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-TCDF 0.1\n1,2,3,7,8-PeCDF 0.03\n2,3,4,7,8-PeCDF 0.3\n1,2,3,4,7,8-HxCDF 0.1\n1,2,3,6,7,8-HxCDF 0.1\n1,2,3,7,8,9-HxCDF 0.1\n2,3,4,6,7,8-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\n1 EPA/100/R-10/005, “Recommended Toxicity Equivalence Factors (TEFs) for Human Health Risk Assessments of 2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin and Dioxin-Like Compounds”, December 2010. (See § 63.14 for availability.)","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 AAAAA—National Emission Standards for Hazardous Air Pollutants for Lime Manufacturing Plants"],"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":"0416f14b6cf56f57d3e8a5771c54c5cd619c6b1e8008ccdc306125e3b55e8b6e","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-10-to-subpart-aaaaa-of-part-63","next":"us/40-cfr-63.7180"},"notice":"GroundRules: Original legal text. Not legal advice."}