Document RwK63rQRNzkO876JjQxyzR78

Katherine E. Reed, Ph.D. *StaffVice President 3M Environmental, Health and Safety Operatiom 900 Bush Avenue, Building 42-2E-26 PO Box 33331 St. Paul, MN 55133-3331 651 778 4331 Certified Mall January 8,2004 Document Processing Centra EPA East - Room 6428 Attn: Section 8(e) Office o f Pollution Prevention and Toxics US EPA 1200 Pennsylvania Avenue NW W ashington DC 20460-0001 RE: TSCA 8(E) SUPPLEMENTAL SUBMISSION: Docket No. 8EHQ-0602-15091 D ear Docket Coordinators: 3M has previously inform ed the EPA (February 28,2002 and April 3,2002) o f the results o f an oral gavage two-generation reproduction study in rats w ith ammonium perfluorooctanoate (CAS# 3825-26-1). In today's submission, 3M provides results from subsequent related testing with this material. This information has been previously submitted to and discussed with EPA. Enclosed please fold foe final study titled `TFOA: Lactational and Placental Transport Pharmacokinetic Study in Rats." Please contact John ButenhofF (651-733-1962) if you have any questions or if we can provide additional information. Sincerely, Katherine E. Reed StaffVice President, Environmental, Health and Safety Operations Enclosure c: Ms. Andrea Malinowski DuPont Building 1007 M arket Street W ilmington, DE 19898 Dr. Robert Rickard DuPont Haskell Laboratory Elkton Road, P.O. Box 50 Newark, DE 19714-0050 : j* : 1