Document k9KO1Lj2oXaD56o3J9BxN3nJD

3M Specialty Materials 3M Center St. Paul, MN 55144-1000 651 733 1100 May 15,2000 0 7 7 aaii 7 b e d Dr. Charles Auer FadEx Tracking Numbar for Customar Director Chemical Control Division Office of Pollution Prevention and Toxics United States Environmental Protection Agency 401 M Street, Southwest Room 403 East Tower (Mail Code 7405) Washington, D.C. 20460 RE: Supplemental Information on Perfluorooctane Sulfonates Dear Charlie: 3M is enclosing additional information on perfluorooctane sulfonates to supplement our submittal dated May 4, 2000. The supplemental information consists of the following: 1. Four pages of executive summaries that were included in the May 4, 2000 submittal as introductions to the environmental science areas. However, our cover letter to you of May 4 also indicated that we would provide copies as part of the cover letter. We inadvertently failed to include them as part of the attachments to the cover letter, and do so now. 2. A summary entitled "26-Week Capsule Toxicity Study with Perfluorooctanesulfonic Acid Potassium Salt (PFOS) in Cynomolgus Monkeys, Current Summary as of May 4, 2000." It is our understanding that this summary was hand-delivered to you by Dr. Larry Zobel at a recent meeting between 3M and EPA, but we supply another copy to complete the filing. 3. The cover page to the resubmittal of confidential information previously submitted on May 4. We inadvertently failed to provide both a sanitized and confidential copy, and Terry O'Brien asked that we resubmit this information to the Document Processing Center. Please do not hesitate to contact me at 651-733-6374 should you have any questions. Very truly yours, William A. Weppner, Ph.D Director of Environmental, Health, Safety & Regulatory Affairs Specialty Materials Markets 3M Center, Bldg 236-1B-10 St. Paul, MN 55144-1000