Document 4vpvarb8Ykqq9vGqQeD84Re8R

l3^l-ll07-39f 3>o( November 20, 2007 DuPont Haskell Global Centers for Health and Environmental Sciences Elkton Road, P.O. Box 50 Newark, DE 19714-0050 Via Federal Express Document Processing Center (Mail Code 7407M) Room 6428 Attention: 8(e) Coordinator Office of Pollution Prevention and Toxics U.S. Environmental Protection Agency 1201 Constitution Ave., NW Washington, DC 20460 /'" n _ ,, w O n iQ in t'J O " ip*/ ^U1 Dear 8(e) Coordinator: 8EHQ-0381-0394 Perfluorooctanoate (PFOA) This letter is submitted as a supplement to our two letters on April 2, 2007 and our July 9, 2007 submission to the above-identified file. ' ` To date, three of five manuscripts have been accepted for publication, which are subject to copyright restrictions by the journals but can be accessed at the websites noted below, .- ' "Cross-Sectional Study of Lipids and Liver Enzymes Related to a Serum Biomarker of Exposure (ammonium perfluorooctanoate or APFO) as Part of a General Health Survey in a Cohort of Occupationally Exposed Workers". http://www.ioem.org/pt/re/ioem/abstract.00043764-20071000000010.htm;isessionid=HP0WpvTMFI4FnCJGHHMJVtihRlwJB73FintJTJYYXL4MLmJvx4KGl1323538283! 18119562818091!-1 v "Longitudinal Study of Serum Lipids and Liver Enzymes in Workers with Occupational Exposure to Ammonium Perfluorooctanoate". http://www.ioem.org/pt/re/ioem/abstract.00043764-20070800Q00008.htm:isessionid=HP0WpvTMF14FnCJGHHMJVtihRlwJB73FintJTJYYXL4MLmJvx4KG!1323538283118119562818091 !-l "Retrospective Cohort Mortality Study of Workers in a Polymer Production Plant Including a Reference Population of Regional Workers". http://www.annalsofepidemiology.org/article/PlIS1047279707002578/abstract A. Michael Kaplan, Ph.D. Director - Regulatory Affairs AMK/RWR/RCL: cip (302) 366-5260 89080000043