The table included in the Federal Register notice (68 FR, No. 232 pp. 67696-67697) published December 3, 2003, had errors in the information provided in the column headed Route & Exposure Levels for 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), 3,3',4,4',5-Pentachlorobiphenyl (PCB 126), 2,3,4,7,8-Pentachlorodibenzo-furan (PeCDF) and the Mixture of PCB 126, TCDD, and PeCDF. The corrected information is provided below.
|Chemical/CAS No.||Report No.||Route & exposure levels|
|2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)/1746-01-6||TR 521||Two-year study; administered by gavage at 3-100 ng/kg to female Sprague-Dawley rats.|
|3,3',4,4',5-Pentachlorobiphenyl (PCB 126)/57465-28-8||TR 520||Two-year study; administered by gavage at 30-1000 ng/kg to female Sprague-Dawley rats.|
|2,3,4,7,8-Pentachlorodibenzo-furan (PeCDF)/57117-31-4||TR 525||Two-year study; administered by gavage at 6-200 ng/kg to female Sprague-Dawley rats.|
|Mixture of PCB 126, TCDD, and PeCDF||TR 526||Two-year study; administered by gavage at 10-100 ng TCDD “equivalents”/kg to female Sprague-Dawley.|
Dated: December 19, 2003.
Deputy Director, National Toxicology Program.
[FR Doc. 04-100 Filed 1-2-04; 8:45 am]
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