AR226-2479 George Woytowich 09/20/2000 08:11 AM To: Roger J2Jpfel/AE/DuPont@DuPont cc: Robert L Ritchey/CL/DuPont@ DuPont Subject 9/18/00 Water Sam ples D o you think w e sh ou ld b e able to pick up C -8 in the river on the cited tests?

AR226-3155 TRADESECRET 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.

SPONSOR Elf Atochem SA Cours Michelet La Dfense 10 92091 Paris-la-Dfense CEDEX France AR226-3158 CONFIDENTIAL TEST SURSTANC.F STUDY TITTP SKIN SENSITIZATION TEST f*/r . , EV GUINEA-PIGS (Maximization method of Magnusson and Kligman) STUDY DTRFrrnp Xavier Manciaux STUDY COMPLETION DA T P 28 August 2000 TESTFACTTJTV CIT C^ temationaJ de Toxicologie BP 563 - 27005 Evreux - France LABORA TORY STUD Y NTIMn I IFMRecherche S-N.CAl/ CAPITAI D S SSO 0 00 F S * S5>QAt -'^WEREr 2700S EVREUX Company Sanitized.

AR226-3363 Society of Environmental Toxicology & Chemistry Summary of DuPont Presentations North American World Congress November 13-18, 2004 Portland, OR Biotransformation of 14C-Iabeled Fluorotelomer substances by microorganisms from activated sludge or soil.

Qrn-ioyooil-af^ 3M Specialty Materials 3M Center St.

Health Alert Archive: Minnesota Department o f Health 37O p.1 Page 1of 4 Minnesota Departimiit of'Health- ....

ATSttCn:A SDeocctuiomne8n(et)P/FroYcIessing Center Attachment 1 P-1 P-1 July 28,2006 Page 4 of 5 M Z26 _373J- Acronym codefor Tables 1 and 2 In Tables 1 and 2, the following acronyms are used: acronym meaning CW FW WW DuPont Chambers Works facility in Deepwater, New Jersey DuPont Fayetteville Works facility in Fayetteville, North Carolina DuPont Washington Works facility in Parkersburg, West Virginia PPPFFFHPBeAxAA PFHpA PPPPFFFFOUDNnAAAA PFDoA PFBS PPPFFFOHOSxSSA PPeerrfflluuoorroobpuentatannooicicaacicdid Perfluorohexanoic acid Perfluoroheptanoic acid Perfluorooctanoic acid Perfluorononanoic acid Perfluorodecanoic acid Perfluorotmdecanoic acid PPPeeerrrfffllluuuooorrrooobhdueoxtdaaennceaenssuoulilfcfooanncaaitdtee Perfluorooctane sulfonate Perfluorooctane sulfonamide Attachment 1 Spaed Matrix Lab Blank 1 cw # P % cw p 3 cw n m 34 CW (DUPLICATE) c w v 5 cw i cw < P * CW 7 cw qp ( CW WG18817-102 Y2 WG18817-101 Y1 L8789-1 Y1 LB789-2 Y1 L87B9-3 Y1 WG18817-103Y1 L8789-4 Y1 L8789-5 Y1 LB789-5 Y1 LB789-6 Y1 L8789-7 Y1 L8789-8 Y1 % Recovery ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL WQ18817 W Q 18817 WQ18817 WQ18817 WG18817 WG18817 WG18817 WG18817 WG18817 WG18817 WG18817 WG18817 PFBA 81.2 ND ND ND ND ND ND <1.44 <1.44 <1.44 NO ND PFPeA 79.0 ND ND ND ND ND ND ND NO ND ND ND PFHxA 85.8 ND 1.82 ND <0.900 <0.900 ND ND ND <0.900 ND <0.900 PFHpA 83.5 ND ND ND ND ND <1.41 3.71 3.71 11.7 6.91 ND PFO A 110 ND 7.71 9.72 24.1 21.6 42.8 13.4 13.4 111 56.7 26.6 PFNA 11B ND 4.28 2.90 7.10 6.78 18.3 4.22 4.22 53.1 29.2 2.37 PFDA 115 ND <1.06 <1.08 1.64 1.51 8.47 1.82 1.82 13.5 7.47 <1.08 PFUnA 128 ND <1.02 <1.02 2.37 2.60 1.70 <1.02 <1.02 3.99 1.55 ND PFDoA 60.9 ND ND ND <0.600 <0 600 0.943 <0.600 <0.600 1.10 0.737 ND PFBS 94.8 ND ND ND ND ND ND ND ND ND ND ND PFHxS 104 ND <3.72 <3.72 39.1 33.5 <3.72 <3.72 <3.72 4.28 <3.72 3.81 PFOS 112 ND 51.1 35.3 68.2 58.0 25.7 35.0 36.0 39.0 53.8 36.8 PFO SA 73.5 ND ND ND ND ND ND ND ND NO ND ND Attachment 1 PFBA PFPeA PFHxA PFHpA PFOA PFNA PFDA PFUnA PFDoA PFBS PFHxS PFOS PFOSA tp // CW ^ k F w t f f lV L8789-9 Y1 LS789-10Y1 L8789-11 Y1 ngftnL ngAnL WG1B817 WG18817 ngAmL WG18817 ND ND NO ND ND ND ND ND ND NO 1.48 ND 12.9 13.0 28.3 <1.53 3.97 2.28 ND <1.08 <1.08 ND <1.02 <1.02 ND ND ND ND ND ND <3.72 <3.72 6.64 30.7 46.9 37.2 ND ND ND t-2.

I A,-22-% ?

NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 DAYTON, OHIO OFFICE SUITE 900 110 NORTH MAIN STREET DAYTON, OHIO 45402-1786 937-228-2838 FAX: 937-228-2816 Roberta.

DuPont Fluorotelomer Supply Chain Update AR226-3329 Presented to 0 o I Supply Chain Team ^ (0 5 P- 3 December 2004 o 0 s5.' m $ o a Contains CBI - DuPont Confidential Surface Protection Solutions A Contains CBI DuPont Telomer-Based Product Manufacturing Processes PFOA is neither used nor added in the manufacture of D Telomer-Based Products - Research did reveal trace PFOA impurity levels as an un reaction by-product Launched wide-ranging product/process research & an w technology that will essentially eliminate trace levels of Example Reaction Profile and Resul DuPont Telomer-Based Product Manufacturing Processes wo ; a | !

ELSEVIER Atmospheric Environment 43 (2009) 3717-3724 Contents lists available at ScienceDirect Atmospheric Environment journal homepage: www.elsevier.com/locate/atmosenv ATMOSPHERIC ENVIRONMENT Atmospheric chemistry of perfluorobutenes (CF3CF=CFCF3 and CF3CF2CF=CF2): Kinetics and mechanisms of reactions with OH radicals and chlorine atoms, IR spectra, global warming potentials, and oxidation to perfluorocarboxylic acids Cora J.

@@aciceanalyt FieldServicesDivision 3M Prepared by: Pace Analytical Services, Inc.

P. 1 ~R a~6 ^ 3.~'9a INVESTIGATION OF PERFLUOROCHEMICAL (PFC) CONTAMINATION IN MINNESOTA PHASE ONE Report to Senate Environment Committe e Fardin Oliaei, Ph.D., Former Emerging Contaminants Program Coordinator Don Kriens, M .S ., P.E., Principal Enginee r Katrina Kessler, M .S., Staff Engineer February 2006 ~~.-~, f ?

. .

3M General Offices = September 21, 2006 3M Center St.