AR226-3101 ^3 - GWWJ Huntingdon CONFIDENTIAL DPT434/984093 BACTERIAL MUTATION ASSAY DuPont Specialty Chemicals, Jackson Laboratory, Chambers Works, Deepwater, NJ 08023, USA Research Laboratory Huntingdon Life Sciences Ltd., Eye, Suffolk, IP237PX, ENGLAND Final report issued 1 October 1998 / Company Sanitized.

AR226-3108 Huntingdon CONFIDENTIAL DPT 438/984469 Ij >3 ASSESSMENT OF READY BIODEGRADABILITY MODIFIED STURM TEST Sponsor Dupont Speciality Chemicals, Jackson Laboratory, Chambers Works, Dcepwater, NJ 08023, USA.

ARjU-03 'Ub N I c o v/h 1> THE DEVELOPMENT SERVICES COMPANY 004546 Draft Report 13-Week Dietary Toxicity Study with N-Methyl Perfluorooctanesulfonamido Ethanol (N-MeFOSE, T-6314) in Rats PREPARED FOR: 3M St.

ARjU-03 'Ub N I c o v/h 1> THE DEVELOPMENT SERVICES COMPANY 004546 Draft Report 13-Week Dietary Toxicity Study with N-Methyl Perfluorooctanesulfonamido Ethanol (N-MeFOSE, T-6314) in Rats PREPARED FOR: 3M St.

6o/ R 2 6 _ PFOA Genotoxicity - / 000865 C O R N IN G Hazleton MUTAGENICITY TEST ON T6358 MEASURING CHROMOSOMAL ABERRATIONS IN CHINESE HAMSTER OVARY (CHO) CELLS FINAL REPORT AUTHOR Hemalatha Murli, Ph.D.

AR226-1381 -4^ M SvG - /3>2/ 31t*4 S ^ * 4 i [*~=<iif ?

3M Medical Department Study: T-6295.4 Analytical Report: FACT TOX-002 LRN-U2121 Study Title 104-Week Dietary Chronic Toxicity Study with Perfluorooctane Sulfonic Acid Potassium Salt (PFOS T-6295) in Rats (Covance Study No.: 6329-183) Analytical Laboratory Report Title Determination of the Presence and Concentration of Perfluorooctanesulfonate (PFOS) in Liver and Serum Specimens of Crl:CD(SD) IGS BR Rats Exposed to Perfluorooctane Sulfonic Acid Potassium Salt (PFOS T-6295) Data Requirement Not Applicable Author 3M Environmental Laboratory Study Completion Date At signing Performing Laboratories Liver and Serum Analyses 3M Environmental Laboratory Building 2-3E-09, 935 Bush Avenue St.

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AR226-2284 kJUKs PofEhiTUf A q s ffLL " o s & T S '- V Pofc.fi'hJ ft$4tuaus_ dnfitfgO.)

AR226-2527 REMOVING THE 1.4X FACTOR FROM EXPERIMENTAL STATION C-3 IN WATER RESULTS, HERE IS A COMPARISON OF THE MOST RECENT SAMPLES: C-8 SAMPLE EXP ST (PPB) CH2MHILL fPPB) CH2M C9(%) CH2M Cll(%) LAB BLANK --- < 0.1 82 74 TW-27 DUPLICATE 4.7 4.3 2.5 3.2 63 45 75 46 TW-M4 DUPLICATE 1.3 1.7 0.7 0.6 87 72 74 45 TW-331 DUPLICATE 1.0 1.4 0.6 76 49 0.6 85 61 TW-33 DUPLICATE 94 100 75 46 78 34 73 37 NOTE: C9 AND Cll ARE CH2MHILL SURROGATES WITH % RECOVERY SHOW4.

AR226-2639 28 Forwarded by Andrea V Malinowski/AE/DuPont on 11/15/2004 11:33 AM Jim E Pesek/AE/DuPont 11/15/2004 11:17 AM To Michael D Aucoin/AE/DuPont@DuPont, Andrew S Hartten/AE/DuPont@DuPont, Andrea V Malinowski/AE/DuPont@DuPont cc Jeff E Todd/HO/DuPont@DuPont, Bradley S Martin/AE/DuPont@DuPont Subject Re : data in Envista for PAS (Document link: Andrea Malinowski) Andrew and Andrea-- I now have the explanations for the data set below.

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Company Sanitized.

M iZ Z ir 2727 Pace Analytical Services, Inc. 1700 Elm St.