DuPont Fluorotelomer Supply Chain Update AR226-3329 Presented to 0 o I Supply Chain Team ^ (0 5 P- 3 December 2004 o 0 s5.' m $ o a Contains CBI - DuPont Confidential Surface Protection Solutions A Contains CBI DuPont Telomer-Based Product Manufacturing Processes PFOA is neither used nor added in the manufacture of D Telomer-Based Products - Research did reveal trace PFOA impurity levels as an un reaction by-product Launched wide-ranging product/process research & an w technology that will essentially eliminate trace levels of Example Reaction Profile and Resul DuPont Telomer-Based Product Manufacturing Processes wo ; a | !

AR226-2214 ^ Debbie J Mulrooney i 11/15/2001 11:13 AM To: cc: Subject Robert F Pinchot/DEV/AE/DuPont@DuPont Steven L Grise/AE/DuPont@DuPont Consent Order Requirements - Particle Size Distribution Rob, Here is a spreadsheet with the particle size distribution, particle density and particulale scavenging coefficients based on the defaults in the ISC Users guide.

AR226-2214 Debbie J Mulrooney 11/15/2001 11:13 AM , To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Steven L Grise/AE/DuPont@DuPont Subject: Consent Order Requirements - Particle Size Distribution Rob, Here is a spreadsheet with the particle size distribution, particle density and particulate scavenging coefficients based on the defaults in the ISC Users guide, i have left a blank slot for the vapor scavenging coefficients for when Steve and company finish calculating them.

AR226-2246 Robert F Pinchot 01/15/2002 03:27 PM To: cc Subject: Bernard J Reilly/AE/DuPont@DuPont Model Results- Privileged Communication See attached for the modeling results for the cistern locations.

M^_'_;_S__I_^_^___:__-_^____-_ To: Anthony J Playtis/CUDuPot@DuPont, Robin C Leonard/ABDuPorrt@DuPont, Roger J 2ipfel/AE/DuPont@DuPont cc: Subject: C-8 testing at Sproance I talked with Bud Mihal, OH coordinator at Spruance. about air monitoring data for C-8 and about blood testing of their employees for 08.

To: Mohammad Rezaei/SE/DuPont@DuPont cc: Ta-Wei Fu/SBDuPontQDuPont, Robert 1Wevodau/SBDuPont@DuPont, Robert F Pinchot/DEV/AE/DuPontQDuPont, Debbie J Mulrooney/ABDuPont@DuPont Subject FEP Stack LocaBons Mo, Per our conversation, here's the sheet we assembled for the modeling ofC-8 emissions.

AR226-2041 To: Partick J Cavanagh/Cl/DuPont@ DuPont cc: Roger J Zipfel/AE/DuPont@ DuPont S u b ject 6/9/99 C -8 Sam pling Pat, Samples were taken today from 1:30 PM to 6:00 PM in the following locations: inside the C-8 recovery building inside the C-8 recovery building control room recovery building roof smoking area roof area outside lunchroom The wind conditions were 3-5 mph out of the north at the start of sampling and out of the south/east at the end of sampling.

DuPont further objects to this Interrogatory on the ground that it seeks information that is not within the possession, custody, or control of DuPont.

Box 50 Newark, Delaware 19714-0050 Laboratory Project ED: DuPont-15302 Work Request Number: 15339 Service Code Number: 1389 Sponsor: E.I. du Pont de Nemours and Company Wilmington, Delaware 19898 U.S.A. and 3M Company 3M Center Building St.

Hinderliter (DuPont), DuPont -15302, December 2, 2004. 2.

Dupont hazard risk assessments indicate that no remediation o f currently contaminated soils or waters is warranted to maintain Dupont's Safety and Health objectives.

Original letter dated 21 March 2003, Dear Mary: Please find enclosed information describing DuPont polymeric products which are part of the Telomer Research Program Product and Article Analysis described in the Voluntary Commitment, Item 1, on page 3 of die 14 March 2003 Letter of Intent submitted to die Agency by the TeJomer Research Program of which DuPont is a member.

A control group o f DuPont office workers stationed in Wilmington, D E was also tested.

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AR226-2154 Catherine A Barton J 05/27/2001 03:24 PM , To: Debbie J Mulrooney/AE/DuPont DuPont, Robert F Pinchot/DEV/AH/DuPont@ DuPont cc: Catherine A Barton/AE/DuPont@ DuPont Subject: Recap of our meeting Ju st so w e're on the sam e page (and s o I can rem em ber what we sa id w e'd do a w eek from now), I've sum m arized som e notes from our meeting today, if any of this looks incorrect to either of you, please holler.