TRADE SECRET Study Title H-24159: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Supplement No. 1 Laboratory Project ID: DuPont-4182 DuPont-4182 Supplement No. 1 AR226-3217 A u t h o r : Carol Finlay, B.A.

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TSCA Document Processing Center Attn: Section 8(e)/FYI P-1 August 10,2006 Page 5 of 10 Attachment 2 ^ 226. 37^ Tables and excerpts from the draft protocols that contain information related to C-8 blood levels.

TSCA Section 8(e) Office 2.^6 _ 3 7 U-& p.i October 23,2006 Page 3 Attachment 1 First Chemical Corporation - Pascagoula, Mississippi 2006 Update - Employee Blood Serum Results Summary Job Name O rig in al Baseline Result from December Result 2003 From August 2006 S am pling Sam pling _______iERb)_______ _________ m _________ N u m b er o f S am ples A v e ra g e M edian M inim um M axim um S tan d ard D eviation 15 6 5 2 10 2 24 8 7 4 17 3 o cn o T -X) -- ~ j r f rsj vO ,"..

AR22 6-37S7 P-1 PERFLUORINATED ORGANICS ANALYSIS AQUEOUS SAMPLES A XYS METHOD: M LA -040 i i | i Contract: REDACTED Data Package Identification: DPWG20231 Analysis WG20112 Prepared for: REDACTED Prepared by: AXYS Analytical Services Ltd.

P-1 January 8, 2009 09 JAM !

Tft/ Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800/Cincinnati, OH 45202-3957 /Tel: 513.381.2838 / Fax: 513.381.0205 / www.taftlaw.com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing Robert A.

Jean B.

3M ENVIRONMENTAL LABORATORY REPORT NO.

BACK TO MAIN Decomposition of Perfluorooctane Sulfonate by Combustion Processes Introduction To understand the potential degradation pathways for perfluorinated chemicals, it was necessary to model the thermodynamics of incineration processes.

BACK TO MAIN STABILITY IN WATER (PHOTOLYSIS) TEST SUBSTANCE_______________ Identity: Remarks: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE alcohol. (1-Octanesulfonamide, N-ethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2hydroxyethyl)-, CAS # 1691-99-2).

BACK TO MAIN 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).

3M Medical Department Study: T6316.1 3M Medical Department Study: T-6316.1 Analytical Report: FACT-TOX-001 LRN-U2103 Analytical Report: FACLTRTNO-UX2-010013 Study Title 104-Week Dietary Carcinogenicity Study with Narrow Range (98.1%) N-Ethyl Perfluorooctanesulfonamido Ethanol in Rats Analytical Laboratory Report Title Determination of the Presence and Concentration of PFOS, PFOSA, PFOSAA, EtFOSE-OH, M556, and PFOSEA in Serum and Liver Samples of Crl:CD(SD) IGS BR Rats Exposed to N-Ethyl Perfluorooctanesulfonamido Ethanol Data Requirement Not Applicable Author 3M Environmental Laboratory Study Completion Date June 06, 2001 Performing Laboratories Liver and Serum Analyses 3M Environmental Laboratory Building 2-3E-09, 935 Bush Avenue St.

ATTACHMENT TO LETTER TO C.

AR A 2 .6 _ O ilf-n ACUTE TO XICITY TO AQUATIC INVERTEBRATES (COROPHIUM VOLUTATOR) TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-602. (1Octanesulfonic acid) (CAS # 2795-39-3).