AR226-2335 ^y Ann K Masse 05/08/2003 06:30 PM To: cc: Subject: Irene A Legiec/AE/DuPont@DuPont, Catherine A Barton/AE/DuPontQDuPont, Charles J Zarzecki/AE/DuPont@DuPont MASS BALANCE TEAM - ENVIRONMENTAL SAMPLING This will be a good meeting for you to attend.

L s { $ Jack L Offenberger C " 0 7 /0 7 /9 9 0 1 :5 8 PM S i To: Lester H Marks/AE/DuPont@DuPont, Stephen J Devries/CUDuPont@DuPont, James W Hunt/CL/DuPont@DuPont, Partick J Cavanagh/CL/DuPont@DuPont, Kevin C R entzsch/A E/DuPont@ DuPont cc: Lauren D Anderson/AE/DuPont@DuPont.

Oscar T Garza ' 07/12/2001 08:05 AM To: Karl G Kronberg/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont cc: Robert L Ritchey/CL/DuPont@DuPont Subject: Re: Surfactant Modeling Note #2 - Possible Funding Request Fyi -T rin i ------------------------------- Forwarded by Oscar T Garza/AE/DuPont on 07/12/2001 07:03 A M ---------------------------------------- Robert F Pinchot 07/12/2001 07:23 AM To: David M Rurak/AE/DuPont@DuPont cc: Oscar T Garza/AE/DuPont@DuPont Subject: Re: Surfactant Modeling Note #2 - Possible Funding Request Q Dave, Yes it does.

Ta-Wei -- Forw arded by Ta-W el Fu/SE/DuPont on 11/12/2002 05:08 PM Stephen R Peck 11/12/2002 05:08 PM To: Ronald V Crosmun/CL/DuPont@DuPont co: John E Crum/SE/DuPont@DuPont, Ta-Wei Fu/SE/DuPont@DuPont, Leo M Lech/DuPont@DuPont, Thomas W Mahlberg/SE/DuPont@DuPont, Mark E Reeder/SE/DuPont@DuPont Subject: Eureka!

AR226-2295 ^ Paul J Bossert 01/28/2003 05:05 PM To: cc: Subject Gerald L Kennedy/AE/DuPont@DuPont, Robert W Rickard/AE/DuPont@DuPont Catherine A Barton/AE/DuPont@DuPont, David M Rurak(AE/DiiPont@DuPont, John R Bowman/AE/DuPont@DuPont, M.

AR226-2485 Walter R long 10/08/2001 10:38 AM To: cc: Subject: Ta-Wei Fu/SBDuPont@DuPont 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 Messmger/AE/DuPont@DuPont Re: PROPOSED APFO SPECIFICATIONS Q How does this list compare with the FAX that Daikin sent?

-- Irene Ann K Masse ^ Ann K Masse 04/02/2003 06:03 PM To: cc: Subject: Irene A Legiec/AE/DuPont@DuPont, Mark D Richmond/AE/DuPont@DuPont Catherine A Barton/AE/DuPont@DuPont Dispersion modeling data folks.

18-Dec-2003 DuPont Confidential campur suiiss. oneo cosnunTschcal' | 15-Dec-2003 | | 1 DuPont Confidential - Come Sued. doesnotconsi TscASA 15-Dec-2003 DUPONt CONfIGENYIAl company surised boss net cents Tech oot 15-Dec-2003 DuPont Confidential 2 Company Sed Dos mk conan TSA CS!

AR226-2295 ^ Paul J Bossert 01/28/2003 05:05 PM To: cc: S u b je c t Gerald L Kennedy/AE/DuPont@ DuPont, Robert W Rickard/AE/DuPont@ DuPont Catherine A Barton/AE/DuPont@ DuPont, David M Rurak/AE/DuPont@ DuPont, John R Bowm an/AE/DuPont@ DuPont, M.

AR226-2159 Robert F Pinchot 07/12/2001 12:33 PM To: David M Rurak/AE/DuPont@DuPont, H David Ramsey/SE/DuPont@DuPont, Stephen J Gfesy/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPorrt@DuPont, John J Mentink/CL/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Bernard J Reilly/AE/DuPont@DuPont, John R Bowman/AE/DuPont@DuPont, Andrea V Maiinowski/AE/DuPont@DuPont, Oscar T Garza/AE/DuPont@DuPont cc: Maurice Astorga/AE/DuPont@DuPont, Debbie J Mulrooney/AE/DuPont@DuPont, Catherine A Barton/AE/DuPont@DuPont Subject: Air dispersion modeling strategy I have talked with a number of people yesterday and today concerning modeling of APFO emissions from Washington Works.

W 0117613.1 000003 Mary Ellen Weber Mary Dominiak February 3, 2004 Page 2 4. 4/24/81 - DuPont Memo Re: Analyses Of Teflon Felt Samples For Residual C-8 (EID217111-3); 5. 5/29/81 - DuPont Memo Re: Analytical Research On PFOA In Products (EID715298-302); 6. 6/10/81 - DuPont Report Re: PFOA In Teflon (EED714129-42); 7. 7/6/81 - DuPont Memo Re: Heat Treated Packing Yams (EID715312-3); 8. 7/81 - DuPont Monthly Report Re: PFOA At Spruance, Virginia And Products (EID715274-5); 9. 8/20/81 - DuPont Report Re: PFOA At Spruance, Virginia Plant (EED715237-63); 10. 8/31/81 - DuPont Report Re: PFOA In Teflon Products (EID715195-98); 11. 9/17/81 - DuPont Report Re: Status Of PFOA At Spruance, Virginia Plant And Products (EID714050-62); 12. 9/30/81 - DuPont Memo Re: PFOA In Teflon Products (EID715206-7); 13. 3/82 - DuPont Report Re: PFOA In Teflon Process (EED714222-50); 14. 6/90 - Battell Europe Report Re: Analysis Of Fumes Resulting From The Curing Operation In The Manufacture Of Teflon-Coated Articles (EID902116-60); 15. 5/31/91 - DuPont Letter To Arlon Re: Exhaust Gas Tests (EID902003-7); 16. 1992 - DuPont Technical Report: PFOA Concentration In Spruance Plant Wastewater (EID714251-64); 17. 10/3/94 - DuPont Letter To First Brands Corporation Re: C-8 In Cat Litter (EID078812-4); 18. 10/20/94 - DuPont Memo Re: Proposed Use Of C-8 In Shaving Gel (GK001446-7); WOl 17613.1 000002

Thanks, Dave Catherine A Barton Catherine A Barton 02/16/2003 01:40 PM To: cc: Subject: Chris E Shoop/AE/DuPont@DuPont Jeffrey L Kott/AE/DuPont@DuPont, Robbin Banerjee/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont, David M R u ra k /A E /D u P o nt@ D uP o nt Re: 2002 Emissions Update 0 Chris, Thanks for sending this information so quickly.

pftil/AE/DuPorit(a>DuPOrrt William A Boyle/AE/DuPont@DuPont, Dawn D JackBon/CUDuPont@DuPont, Steve Hatcher/CI-/DuPont@DuPont, Stephen J Gissy/AE/DuPont@DuPont, Dean W Thompson/AE/DuPont@DuPont, Oscar T Garza/AE/DuPont@t)uPont, John E Cruin/AE/DuPont@DuPont Pollow-up on C-8 Bubbles Folks, Friday, 7/23/99, Roger Zipel presented the status of the new C-8 recovery system and explained the cause for the bubbles when It rains.

AR226-2313 David M Rurak 03/16/2003 07:01 PM To: Catherine A Barton/AE/DuPont@ DuPont ce: Mark C Hause/DuPont@ DuPont, Charles J Zarzeeki/AE/DuPont@ DuPont Subject Re: ISC Model Q C ath y, I am not suggesting the model Is being used inappropriately, it has provided valuable input.

AR226-2554 Robert F Pinchot 04/24/2000 09:31 PM To: cc: Subject: Gary w Kennedy/AH/DuPont@DuPont, Susan S Mileti/DuPont@DuPont, Michael E McCord/AE/DuPont@DuPont, Robert 0 Buck/DuPont@DuPont, Diane R Shomper/AE/DuPont@DuPont, Hugh J Campbell_Jr/AE/DuPont@DuPont, Bernard J Reilly/AE/DuPontffiDuPont, Andrew S Hartten/AE/DuPont@DuPont, Isidoros J Zanikos/AE/DuPont@DuPont Maurice Astorga/AE/DuPont@DuPont Notes from our meeting last week Attached are the notes from our meeting last week.