AR226-2133 Test Results Sample Date Rang concentration Range Action Level Industrial H ygiene 1/ 1/2002 11/ 2 2 /2 0 0 2 100% Sample D t Sample# Duration Type Employee Name Peis Chemical BTO : 08 LOC : 045 TEFLON B-162 ROOF 2nd Level - General & HSV Unite 3/5/2002 10445 0/11/2002 10514 9/11/2002 10631 360 A 360 A 360 A C-8/FC-143 C-8/FO-143 C-8/FC-143 BTO: 08 LOC: 048 TEFLON B-162 OUTSIDE SMOKING AREA - 2ND LEVEL 3/5/2002 10446 5/11/2002 10515 9/13/2002 1063?

AR226-2212 C hris JE S hoop 11/07/2001 04:47 PM To: Debbie J Mulrooney/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPont cc: Subject: Data Sheet for Permitted Emissions CONFIDENTIAL COMMUNICATION Debbie, Here is the sheet I promised but I will need to have Kari complete the cells for FEP, and check the cells for PFA.

AR226-2220 O .. jiy L Ron J Buchanan 11/29/2001 10:45 AM < To: Robert F Ptnchot/DEV/AE/DuPont@ DuPont cc: Debbie J Mulrooney/AE/DuPont@ DuPont, Steven L Grise/AE/DuPont@ DuPont, Mary A Kaiser/AE/DuPont DuPont, Roger J Zipfel/AE/DuPont DuPont, Ta-W ei Fu/SE/DuPont@ DuPont, Bernard J Reilly/AE/DuPont DuPont, David M Rurak/AE/DuPont@ DuPont, Chri3 E Shoop/AE/DuPont@ DuPont, Robert L Ritchey/CL/DuPont@ DuPont, Charles J Zarzedd/AE/DuPont DuPont, Stephen T Breske/AE/DuPont@ DuPont Subject: Re: M ulit M edia Consent Order APFO data requirements ft) Rob...

AR226-2281 4/ 17/02 ISC Modeling Methodology and Results Emission Source Information The ISC3 model was used to calculate ambient ground-level vapor concentrations and deposition rates for year 2000 actual C8 emissions from the Washington Works site.

AR226-2485 Walter R Tong 10/08/2001 10:38 AM To: Ta-W ei Fu/SE/DuPont@DuPont cc: Takuya.ichida@daikin.co.jp, Satoshi_komatsu@notes.che.daikin.co.jp, Charles J Noelke/AE/DuPont@DuPont, Steven H Swearingen/AE/DuPont@DuPont, Katsunosuke Kitagawa/PO/DuPont@DuPont, Nancy L Tanzola/AE/DuPont@DuPont, David R Wallace/AE/DuPont@DuPont, Shawn E Messinger/AE/DuPont@DuPont Subject: Re: PROPOSED APFO SPECIFICATIO NS How does this list compare with the FAX th at Daikin sent?

DuPont Engineering July 22,2002 AR226-2609 DuPontE n fitiwing Borloy M l PIb s - Bldg. 27 Lancaster Pik & Rts.

Larry R.

Lancaster Laboratories 2425 New Holland Pike Lancas'ter.

AR226-3149 DuPont-3871 TRADE SECRET Study Title H-23960: In Vitro M am m alian Chrom osom e A berration T est In Chinese H am ster O vary (CHO) Cells Authors Ramadevi Gudi, Ph.D.

UNITED NATIONS ADVANCE ENGLISH COPY M uaH 360?

Katherine E.

\6YY p.1 m i 2 6 - 3733 July 28, 2006 u c ; QO 05 HUG - 1 " " D ' DuPont Haskell Laboratory for Health and Environmental Sciences Elkton Road, P.O.

P-1 Taft/ 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 R o ber t A.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 245986 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 05/05/2006 Signature Name: Richard C.

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.