Document 6BNL8b13rjV3R38w5RLp2varm

P-1 07o7-03^ ^ 4 & ZZ& DuPont Haskell Laboratory for Health and Environmental Sciences Elkton Road, P.O. Box 50 Newark, DE 19714-0050 July 9, 2007 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 contain no cbi Dear 8(e) Coordinator: 8EHQ-0381-0394 Ammonium Perfluorooctanoate (APFO) Supplement to October 17, 2006 Submission This letter is submitted as a supplement to the above-identified October 17, 2006 submission. Enclosed with this letter is a copy of the following report: "Ammonium Perfluorooctanoate: Phase II. Retrospective Cohort Mortality Analyses Related to a Serum Biomarker of Exposure in a Polymer Production Plant." This report is the same as the report that was included with the October 17th submission, except that the copyright protection has been removed. This report may be placed in the EPA public docket and may also be included in the EPA electronic docket. Please contact me if any further clarification is needed. QSincerely, C*-- ^ __________ A.Michael Kaplan, Ph.D. Director - Regulatory Affairs and Occupational Health AMK: clp (302) 366-5260 89070000386 Attachment: (1) "Ammonium Perfluorooctanoate: Phase II. Retrospective Cohort Mortality Analyses Related to a Serum Biomarker of Exposure in a Polymer Production Plant." DuPont-14809; 73 pages / 30 5