Document ZBp0an5YGVBVd9yY7wredeZop

~oUPONT P1 7- 0-3 9~ DuPont Haskell Laboratory for Health and Environmental Sciences Elkton Road, P .O . Box 5 0 Newark, DE 19714-0050 July 9, 2007 Document Processing Center (Mail Code 7407M) ~~~q~~~ 3~~ Room 642 8 Attention : 8(e) Coordinator Office of Pollution Prevention and COT NToAxIiNcsN o(a~~ U .S . Environmental Protection Agency 1201 Constitution Ave ., NW Washington, DC 20460 Dear 8(e) Coordinator : 8EHQ-0381-0394 Ammonium Perfluorooctanoate (APFO) Supplement to October 17, 2006 Submissio n This letter is submitted as a supplement to the above-identi fied October 17, 2006 submission . Enclosed with this letter is a copy of the following repo rt : "Ammonium Perfluorooctanoate : Phase II . Retrospective Coho rt Mo rtality Analyses Related to a Serum Biomarker of Exposure in a Polymer Production Plant. " This repo rt is the same as the report that was included with the October 17` h submission, except that the copyright protection has been removed . This repo rt may be placed in the EPA public docket and may also be included in the EPA electronic docket. r Please contact me if any further clari fication is needed. Sincerely, A .Michael Kaplan, Ph.D . Director - Regulatory Affairs and Occupational Health AMK : clp (302) 366-5260 I Ilfll ( 1 ~II I I~I II~I II I III I(l~il (I~II i It~ il'~ li !~~ Attachment: ( 1) "Ammonium Perfluorooctanoate : Phase II . Retrospective Cohort Mort ality Analyses Related to a Serum Biomarker of Exposure in a Polymer Production Plant ." DuPont-14809 ; 73 page s ~ 3~r 5 so8