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BACK TO MAIN Environmental Monitoring - Multi-City Study Water, Sludge, Sediment, POTW Effluent and Landfill Leachate Samples Executive Summary 3M Environmental Laboratory June 25, 2001 Introduction The Multi-City study was conducted to obtain data about the presence of fluorochemicals in the environment, foods, and drinking water, in order to understand the potential sources of human and environmental exposures.

BACK TO MAIN Study Title Microbial Metabolism (Biodegradation) Studies of Perfluorooctane Sulfonate (PFOS) IV.

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AR226-2186 EXPOSURE EVALUATION FOR NEW PROCESS AT FAYETTEVILLE SITE Prepared by DuPont Engineering Technology Debbie Mulrooney Cathie Barton August 20, 2001 EID293775 TABLE OF CONTENTS Executive Summary 1.

AR226-2232 \ '""WWV* Steven L Grise 12/12/2001 09:43:14 AM To: cc: Subject: Bernard J Reilly/AE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@DuPont, Debbie J Mulrooney/AE/DuPont@DuPont Steven L Grise/AE/DuPont@DuPont 0 ,0 .

AR226-2515 Andrew S Hartten 04/04/2002 09:57 A M f To: Ta-W ei Fu/SE/DuPont@ DuPont cc: Hidetaka Hirom atsu/PO/DuPont@ DuPont, David M Rurak/AE/DuPont@ DuPont, Seiichi Tanaka/PO/DuPont@ DuPont, V ic E Kleinfelter/AE/DuPont@DuPont, Etsuo Takenouji/DuPont@ DuPont, Koichi lnagaki/PO/DuPont@ D.uPont, Kazuaki Suzuki/PO /DuPont@ DuPont, Katsunosuke Kitagaw a/PO /DuPong@ DuPont, KazuaW okoyam a/PO/i3uPont@ DuPont, Su san l, Skrotsky/AE/DuPont@ DuPont, Shikiho ltaya/PO /DuPont@ DuPont, George H Sefikler_Jr/AE/DuPont@ DuPont, Diane R Shom per/AE/DuPont^>DuPont, O scar T Garza/AE/DuPont@ DuPont, IsIdoroS J , Zanikos/AE/DuPont@ DuPont, Stephen R Peck/SE/DuPont@ DuPont Subject: Re: A PFO v s.