EPA/600/AP-92/001c (Aug. 1992) Chpt 3. Acute, Subchronic; and Chronic Toxicity (Filename: EPA-542.01) December 1, 2014admin Leave a Comment {Health Assessment for 2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin (TCDD) and Related Compounds} Prepared by United States Environmental Protection Agency; Washington, DC 20460.