DuPont Engineering July 22,2002 AR226-2609 OuPont Engineering BurloyMill PlKt.Blds.27 Lincastrr Pjk6 & Rtg. 141 Wilffiingtmi, DE 1S805 Mr.

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AR226-3210 TRADE SECRET Study Title H-23925: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Supplement No. 1 Laboratory Project ID: DuPont-2921 AUTHOR: Carol Finlay, B.A.

AR226-3360 ATMOSPHERIC LIFETIMES AND DEGRAD MECHANISMS OF FLUOROTELOMER ALCOHOLS C^F^C^CR^Ofi Valerie Bossoutrot*, Tanya Kelly^ Isabelle Magneron*, Wahid Howard Sidebottom#, Klaus Wirtz and Georges Le Br * Laboratoire de Combustion et Systemes Reactifs, CNRS Orle # Chemistry Department, University College, Dublin (IRL Centro de Estudios Ambientales del Mediterraneo, Valencia SETAC Prague 18-22 April 2004 .ontext: 1 A .i -^Sis^ Long chain perfluorinated carboxylic acids (PFCAs, Cj^C(0)OH observed in fish and mammals PFCAs : not generally used directly in consumer or industrial materials - presumably degradation products of precursor chemicals : potentially FTOHs Fluorotelomer alcohols (FTOHs, C^F^CH^CH^OH): -Uses: intermediates in manufacture of diverse products - Production: 5x106 kg yr1 (80% polymeric applications) (20% non polymeric ) - Observed in the atmosphere (up to 135 pg m"3) - Atmospheric sources : degradation o^ polymer and non polymeric that incorporate FTOHs (?)

CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 Voluntary Use and Exposure Information Profile PerfluorooctanoicAcid and Salts 1.

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BACK TO MAIN 3M Environmental Laboratory Report No.

BACK TO MAIN 3M Environmental Laboratory Report No.

BACK TO MAIN BIOCONCENTRATION (PARTITION COEFFICIENT) TEST SUBSTANCE______________________ Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The test substance is a white powder.

C8 Science Panel Website C8 Science Panel 1:c e pt o s re 08 QC '0 m s C8 Study Results Home The Science Panel 15 October 2008 Panel Members Press Community Study Sum m ary C8 Study results C8 T est Results Consent Form C8 H ealth Project Links C o n ta ct Below are listed 3 Status Reports submitted to the Wood County Court in Parkersburg West Virginia under the C8 Settlement.

3M Specialty Materials p - 'f f May 30, 2000 3M Center F a r - o b o o - /St.

G L P 1 0 -0 1 -0 2 ; In te r im R e p o r t 2 7 - A n a ly s is o f P F B S , P F H S , a n d P F O S in G r o u n d w a t e r S a m p l e s C o l l e c t e d f r o m D e c a t u r , A L , 1 st Q u a r t e r 2 0 1 2 Study Title Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sedim ent for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSC A Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisim ha Kesari P.E., DEE W eston S olutions, Inc. 1400 W eston W ay W est Chester, PA 19380 Phone: 610-701-3761 A u th o r Susan W olf 3M Environm ental Laboratory Interim Report Completion Date Date of signing Performing Laboratory 3M Environmental Health and Safety Operations Environmental Laboratory 3M Center, Bldg 260-05-N-17 St.

GLP10-01-02; Interim Report 19 Analysis of PFBS, PFHS, and PFOS in Water Samples Off-Site BP Property - July 2011 GLP10-01-02: Interim Report 19 - Analysis of PFBS.

^ 226- 02/6 Attachments to Letter to C.

PFOS: A 96-HOUR TOXICITY TEST WITH THE MARINE DIATOM (Skeletonema costatum) FINAL REPORT WILDLIFE INTERNATIONAL, LTD.