Document nnVBYQ4qYZ9wkmvrXrvnZmJ2

3M 3M Corporate Toxicology and Regulatory Services Certified Mail 3M Center, Building 0220-06-E-03 P-1 St. Paul, MN 55144-1000 651 733 1773 Fax ^e22,-37C5 RECEIVED 07 JAN i 6 m $: I5 January 8, 2007 Document Processing Center EPA East - Room 6428 Attn: Section 8(e) Office of Pollution Prevention and Toxics US EPA 1200 Pennsylvania Avenue NW Washington DC 20460-OSftf NOCBI RE: . TSCA 8(E) SUBSTANTIAL RISK NOTICE <QN: :PFHS and PFOS; Supplemental t Sulfdnate-based Fluorochemicals, Docket Nos. 8EHQ-1180-374; 8EHQ-0381-0394- 8EHO- 0598-373 'V Dear Sir/Madam: In July of 2006 3M notified the EPA that preliminary data had been received from a study suggesting an effect of perfluorooctanesulfonate (PFOS) and perfluorohexanesulfonate (PFHS) on body weight, food consumption, and serum cholesterol in 15% dietary fat fed E3 Leiden transgenic mice in vivo. The final report for this study is enclosed. If there are questions, or if additional information is needed, please contact me at (651-737 1374). Sincerely, Deanna J. Luebker, MS, PhD 3M TSCA 8(e) Coordinator Enclosure 89070000089 CO