Document wgnbj1rrJ3gKo216Eo3gKJEQE

P-1 fflU T O May 24, 2007 fl -2 Z & 3 7 & / ' 07_ li7 7 7 " '" 77 0: 03 DuPont Haskell Laboratory for Health and Environmental Sciences Elkton Road, P.O. Box 50 ' Newark, DE 19714-0050 Via Federal Express Document Processing Center (Mail Code 7407M) Room 6428 CONTAIN NO CBI Attention: 8(e)/FYI Coordinator Office of Pollution Prevention and Toxics U.S. Environmental Protection Agency 1201 Constitution Ave., NW Washington, DC 20460 Dear 8(e)/FYI Coordinator: 8 EHQ I b44 b 8EHQ-06-16446 Supplemental Submission This letter is submitted for your information and it supplements the above-identified 8EHQ submission. Specifically, provided with this letter is an interim final report titled as follows: Fayetteville PFOA, Exposure Assessment Report, Final Report [DuPont-22464] Report of Exposure Assessment of Measured Serum Perfluorooctanoic Acid (PFOA) Anion in the Manufacture of Ammonium Perfluorooctanoate (APFO) at Fayetteville, NC The study period covered is from process start-up through December 31, 2005. The study itself is estimated to be completed by the end of 2009. The serum biomonitoring data contained in this report were previously submitted to the Agency (see DuPont submission dated March 27, 2006 and assigned 8EHQ-06-16446). The major objective of this study is to measure worker exposure by sampling airborne levels of PFOA and monitoring serum levels of PFOA anion in manufacturing, to provide supporting data to management and workers in the APFO areas, to evaluate the effectiveness of the industrial hygiene controls, and to effect changes in those controls as appropriate. It is not a study of the health status of the participants. Sincerely, 1 ----- A. Michael Kaplan, Ph.D. Director - Regulatory Affairs and Occupational Health AMK/BJD: clp (302) 366-5260 89070000284 90 0 0 0 Attachment: 1 - Report as identified above [DuPont-22464 (53 pages)] /