DuPont has no access to the entire Brookmar data set and Brookmar is not working at the direction of DuPont.

AR226-2225 Robert F Pinchot 12/07/2001 02:47 PM To: cc: Subject: Roger J 2ipfel/AE/DuPont@DuPont Debbie J Mulrooney/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont Re: Consent Order - Stack Parameters and Emissions Q Roger, Do these data make sense to you?

AR226-2225 Robert F Pinchot 12/07/2001 02:47 PM To: Roger J Zipfel/AE/DuPont@DuPont cc: Debbie J Mulrooney/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont Subject: Re: Consent Order - Stack Parameters and Emissions Q ' Roger, Do these data make sense to you?

oe DOE Used to Screen Main Effects on PFOA Levels | 9-Jan-2004 DuPont Confidential vaRHAe "+ 9-Jan-2004 DuPont Confidential Company Satz.

AR226-2221 ^ Debbie J Mulrooney 11/29/2001 01:21 PM * To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Chris E Shoop/AE/DuPont@DuPont, Roger J Zipfel/AE/DuPont@DuPont Subject: Consent Order - Stack Parameters and Emissions Rob, - Here is a spreadsheet with 2 worksheets in it, one with the stack parameters, one with the emission information.

AR226-2543 RCRA FACILITY INVESTIGATION PLAN DuPont Washington Works Washington, West Virginia September 24,1997 MRS Project No. 7179 Prepared by DuPont Corporate Remediation Group & DuPont Environmental Remediatfon Services Barley Mill Plaza 27 P.O.

E.I. duPont de Nemours & Co., Inc.

AR226-2558 -9 - Andrew S Hartten 05/31/2001 03:29 PM To: cc: Subject; wentworth.wltliaffi@epamall.epa.gov Robert L Ritchey/CL/DuPont@DuPont, Isidores J Zanites/ABDuPont@DuPont, Andrea V Malinowski/AE/DuPont@OuPont, Alison A Crane/A/DuPont@DuPont information on Washington Works Facility Bill, The following provides answers to your questions in the May 23 memo you sent me, which Is attached, Per our conversation today, I'm faxing to you hard copy analytical results and the pertinent portion of the site NPDES permit modification (to add to the original permit which you have).

Ihis is a main deficiencyof DuPont's work.

', Szostek B.2, Capka V.2, Larsen B.S.1, Gannon J.T.1, and Buck R.C.3 1 DuPont Central Research and Development, Wilmington, USA;2 DuPont Haskell Laboratory; USA3 DuPont Chemical Solutions Enterprise, USA.

Another interesting fact Debbie shared with Dave was that DuPont has run a deposition model using software different than the standard ISC model.

AR226-2558 Andrew S Hartten 05/31/2001 03:29 PM To: wentworth.william@ epamall.epa.gov cc: Robert L Ritchey/CL/DuPont@ DuPont, Isidores J Zanikos/AE/DuPont@DuPont, Andrea V Malinowski/AE/DuPont@DuPont, Alison A Crane/AE/DuPont@DuPont Subject: Information on W ashington W orks Facility B ill, The following provides answers to your questions in the May 23 memo you sent me, which Is attached.

AR226-2686 CO AR226-2686 Perfluorinated Surfactants 'Dupont / UvA / RIKZ Meeting, 07-05-200; "Perfluorinatecr" surfactants A desk study on the use and environmental effects of perfluorinated surfactants in the Netherlands Floris Hekster & Pirn de Voogt A desk study commissioned by the Dutch Ministry of Transport, Public Works ____ ____ ___and Water Management ____ EID676803 Perfluorinated Surfactants 'Dupont / UvA / RIKZ Meeting, 07-05-2002 Outline of the presentation -y Goals ne ble of contents report / Methodology Available knowledge Remaining questions/ uncertainties A desk study commissioned by the Dutch Ministry ot Transport, Public Wolks ____ __ and Water Management ______ ___ EID676804 Perfluorinated Surfactants ' Dupont / UvA / RIKZ Meeting, 07-05-20 The study has three major goals 1.

Rurak, DuPont Bernard, J.

Does not contain T DuPont Confidential Company Sanitize.