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3M Specialty Materials 3M Center St. Paul, MN 55144-1000 651 733 1110 April 2, 2002 Dr. Oscar Hernandez US EPA/OPPT/CCD (7405) 1200 Pennsylvania Avenue NW Washington, D.C. 20460 Dear Oscar: Re: Information on Perfluorooctane Sulfonates and Related Compounds This continues 3M's voluntary submissions of data on perfluorooctane sulfonates and related compounds, as part of our ongoing dialogue with EPA regarding fluorochemicals. Enclosed you will find the following: Final Report, Oral (Gavage) Two-Generation (One Litter per Generation) Reproduction Study of Ammonium Perfluorooctanoate (APFO) in Rats, Sponsor's Study Number: T6889.6, March 26, 2002. We will continue to provide information as it becomes available. Please feel fi'ee to contact me with any questions. Please feel fi-ee to contact me with any questions. Very truly yours, cc: Dr. Charles Auer Michael A. Santoro Director of Environmental, Health Safety and Regulatory Affairs Specialty Materials Markets 3M Center, Building 236-1B-10 St. Paul, MN 55144 651-733-6374 (phone) 651-733-1958 (fax) E-mail: masantoro@mmm.com 3M Specialty Materials 3M Center St. Patti, MN 55144-1000 651 733 1110 April 2, 2002 DOoffciucemeonft PPolrloucteiosnsinPgreCveennttieorn (7a4n0d7)Toxics U.S. Environmental Protection Agency 1200 Pennsylvania Avenue NW Washington, D.C. 20460 Attention: For Your Information Docket - Docket No. AR-226 Re: Information on Perfluorooctane Sulfonates and Related Compounds Dear Sir or Madam: This continues 3M's voluntary submissions of data on perfluorooctane and related compounds, as part of our ongoing dialogue with EPA regarding fluorochemicals. sulfonates Enclosed you will find the following: Final Report, Oral (Gavage) Two-Generation (One Litter per Generation) Reproduction Study of Ammonium Perfluorooctanoate (APFO) in Rats, Sponsor's Study Number: T6889.6, March 26, 2002. We will continue to provide information as it becomes available. Please feel free to contact me with any questions. cc: Dr. Charles Auer Dr. Oscar Hernandez Very truly yours, t :i i ! Michael A. Santoro -r_- j Director of Environmental, Health Safety and Regulatory Affairs Specialty Materials Markets 3M Center, Building 236-1B-10 St. Paul, MN 55144 651-733-6374 (phone) 651-733-1958 (fax) E-mail: masantoro@mmm.com