BACK TO MAIN STABILITY IN WATER (PHOTOLYSIS) TEST SUBSTANCE Identity: Perfluorooctanesulfonate-potassium salt.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Remarks: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE alcohol. (1-Octanesulfonamide, N-ethyl1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2-hydroxyethyl)-, CAS # 1691-99-2).

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Toxicological Summary PFOS Dietary Chronic Definitive Reproductive Study: Mallard Test Substance: Perfluorooctancsulfonate (POS) Structure: 1-Octanesulfonic acid, 1,1,2.2,3,3,44,5,5.6,6,1,7,8.8.8-heptadecafluoro, potassium salt.

3sMrtFLaUcOmRnOtCrHEoMvIeCrAsLrSoUBrMiInSSwIeOsN HR226 190 | 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE 2% 902). 2. 206/903 2690p. 3.

AR226-2048 ^ Ta-Wei Fu 07/30/2001 08:01 AM To: cc: Subject John E Crum/SE/DuPont@DuPont Ta-Wel Fu/CL/DuPont@DuPont, Roger J 2ipfel/AE/DuPont@DuPont Re: C-8 sampling D John, Maybe I did not make my points clear on the phone so I would like to clarify it here: 1.

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AR226-2256 Chris E Shoop 02/1 B/2002 12:30 PM To: cc: Subject: Debbie J Mulrooney/AE/DuPorrt@DuPont Robert I Wevodau/SE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@DuPont Re: Case 10 Questions Q Debbie, The production rates in Case 10 were from forecasts for about 2007.

AR226-2278 Robert F Pinchot 04/23/2002 03:03 PM To: cc: Subject: M.

AR226-2325 ^ John W MilroyJH 04/03/2003 05:41 PM To: cc: Subject: Catherine A Barton/AE/DuPont@DuPont Stephen R Hastlngs/DDE/DuPont@DuPont, Ann K Masse/HO/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont Re: Data for air dispersion modeling Q This is the data for DuPont Dow, building 1163, C8 release to the amosphere.

AR226-2335 ^y Ann K Masse 05/08/2003 06:30 PM To: cc: Subject: Irene A Legiec/AE/DuPont@DuPont, Catherine A Barton/AE/DuPontQDuPont, Charles J Zarzecki/AE/DuPont@DuPont MASS BALANCE TEAM - ENVIRONMENTAL SAMPLING This will be a good meeting for you to attend.

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AR226-2810 TRADE SECRET Study Title H-24750: Influence on Growth and Growth Rate of the Green Alga Selenastrum capricomutum AUTHORS: BarbraD.

AR226-3155 TRADE SECRET Study Title H-23961: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-2923 DuPont-2923 AUTHOR: Carol Finlay, B.A.

TRADE SECRET AR226-3175 DuPont-6010 Study Title H-24516: Static, Acute, 48-Hour Screening Test to Daphnia magna Laboratory Project ID: DuPont-6010 AUTHOR: Robert A.