DuPont does not have sufficient basis to verify this information, nor can DuPont attest to the validity or accuracyofit.

Does not contain TSCA CBI H-26137, H-26138, and H-26139: Repeated-Dose Dermal Toxicity 28-Day Study in Male Rats_________________________________ DuPont-13882 B.

P* M AA6 - Z l t f TRADE SECRET DuPont-8837 Study Title H-24616: In Vitro Dermal Penetration Through Rat Skin Laboratory Project ID: DuPont-8837 Test Guidelines: None were applicable Author: William J.

o o DuPont Company Confidential Information - For DuPont Use Only AEROBIC BIODEGRADATION STUDY OF ND A E.I.

TSCA Section 8(e) ~226 . 3 7~" 7 Office October 23, p .1 200 6 Page 6 Attachment 2 DuPont First Chemical Blood Monitoring EIB Provided to Mississippi DEQ (2 pages) p. 2 DuPont First Chemical Blood Monitoring EIB As part of an ongoing industrial hygiene program, DuPont First Chemical has been monitoring PFOA levels in blood samples taken from employee volunteers .

y L\ ^ * DuPont Haskell VFn. f.

AR226-2458 J Stephen Opp 0 5 /1 7 /9 9 0 1 :4 0 PM To: Roger J Zipfel/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont cc: Andrew S Hartten/AE/DuPont@DuPont Subject: Washington Works Groundwater Results Summary Tables Roger and Bob: Attached you will find a spreadsheet that summarizes the 2 groundwater sampling events at Washington Works.

AR226-2458 t > i FT"-^ r'" i j Stephen Opp 05/17/99 01-.40 PM To: cc: Subject: Roger J 2ipfel/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont Andrew S Hartten/AE/DuPont@DuPont Washington Works Groundwater Results Summary Tables Roger and Bob; Attached you will find a spreadsheet that summarizes the 2 groundwater sampling events at Washington Works.

DuPontTM and the DuPont Oval Logo are trademarks or registered trademarks of DuPont or its affiliates.

This concluded diligent negotiations between DuPont, West Virginia's Department of Environmental Protection (DEP) and Department of Health and Human Resources (DHHR), and EPA, regarding how to best assess and address the impact of C8 released from DuPont's Washington Works facility.

References DuPont Co., Haskell Laboratory Data: 1983a.

TSCA Section 8(e) Office , Vfl Attachment 2 DuPont First Chemical Blood Monitoring EIB Provided to Mississippi DEQ (2 pages) p.1 October 23,2006 Page 6 P-2 DuPont First Chemical Blood Monitoring EIB As part of an ongoing industrial hygiene program, DuPont First Chemical has been monitoring PFOA levels in blood samples taken from employee volunteers.

y L\ ^ * DuPont Haskell VFn. f.

Buck - DuPont 6 5 3 2 r Chemical Solutions Enterprise P.

No adverse effects occurred in any group (DuPont, 1986d).