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AR226-2156 Catherine A Barton ^ 07/08/2001 04:23 PM To: cc: Subject: Robert F Pinchot/DEV/AE/DuPont@DuPont Debbie J Mulrooney/AE/DuPont@DuPont Rob, I hope you had a nice vacation last week.

AR226-2187 EXPOSURE EVALUATION FOR NEW PROCESS AT FAYETTEVILLE SITE Prepared by DuPont Engineering Technology Debbie Mulrooney Cathie Barton August 20,2001 Revised February 20, 2002 EDD0068699 TABLE OF CONTENTS i Executive Summary 1.

AR226-2326 ^ JohnWMilroyJH 04/04/2003 11:09 AM To: cc: Subject Catherine A Barton/AE/DuPont@DuPont Stephen R Hastings/DDE/DuPont@DuPont, Ann K IVIasse/HO/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont Re: Data for air dispersion modeling Q Stack height is 25 feet.

AR226-2557 - , , -<9 Andrew S Hartten 05/23/2001 05:21 PM To: Robert L Ritchey/CUOuPont@OuPontA, Hson A Crane/AE/DuPont@DuPont, George Woytowich/CL/DuPont@OuPont cc: Subject: Information on Washington Works Facility I received this today.

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).

AR226-2579 )Andrew's Hartten :-~----^JMI 0212712.QQ2'W:W W ^ To: co: Subject: M.

FUR DU FONT USE ONLY AR226-2892 Copies Co E.

AR226-2895 FOR DU POUT USE ONLY Copies Co E.

AR226-3044 Study Title Skin Irritation Test with H-21951 in Rabbits Laboratory Project ID Haskell Laboratory Report No. 782-96 Author Tracy A.

rr mM MM --M | HR RA6_ 3222 404 TRADE SECRET Study Title 'H-24768: Subchronic Toxicity WithOne9Ge0n-eDraaytiGoanvaRgeeprSotduudcytiinonRaEtvsaluations Volume dof 5 Laboratory Projct ID: DuPont 5990 ARaa6 - 3422 Duron TEST GUIDELINES: U.S.

HR226 - 3258 440 TRADE SECRET Study Title H-25434: Static, Acute, 48-Hour Screening Test to Daphnia magna Laboratory Project ID: DuPont-11409 AR226 -3258 DuPont11409 AuThoR: Laurie D.

Aragg - 3297. 479 ~ AR 226-3 297 `TRADE SECRET Study Title 'H-25499 and H-25500: Subchronic Toxicity 90-Day Gavage Study in Male Rats.