A R W -o H IJ ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: [2-(N-Ethylperfluorooctanesulfonamido) ethyl acrylate; may also be referred to as B1228, D-1, EtFOSEA, or FX-13. (2-Propenoic acid, 2[ethyl[heptadecafluorooctyl)sulfonyl]amino]ethyl ester, CAS # 423-82- 5) Remarks: Material is an amber solid.

AR5.U-OH55 BIOSEARCH, INC. p.o. bo* 8598 Philadelphia, Pennsylvania 19101 telephone: (215) 848-4499 Submitted to: Material: Sample Received: Date of Report: Test: Object of Test: Procedure: ResuIts: Conclusion : 3M Company 3M Center St.

m & - Ol Attachments to Letter to C.

Interoffice Correspondence c :H .E .

f y i - o r o o - /3 7 < f Attachments to Letter to C.

/|R 1%-OS07 ACUTE TOXICITY TO AQUATIC INVERTABRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC- 116, FC-126, FC-169, or FC-143.

AR22&o 5M Attachments to Letter to C.

y L\ ^ * DuPont Haskell VFn. f.

Report EO1-1245 PFOS: A Reproduction Study with the Nothem Bobwhite Study Title A nalytical Phase Re po r t for PFO S: A R e pr o d u c tio n St u d y w ith T he N o r th e r n Bo b w h ite Data Requirement FI FRA Subdivision E, Section 71-4 O E C D Guideline 206 Author Lisa A.

A222&- Reduction of Perfluorooctanoic Acid (PFOA), Precursors, and Related Impurity Levels in Fluorotelomer Intermediates and Finished Products Presentation given to US EPA contained 48 total charts.

POLYMER PRODUCTS DEPARTMENT MANUFACTURING DIVISION AR226-2013 CC: M- S.

AR226-2177 Dupont - Washington Works - C8 Project N O T E S from S ite Inspection C hris Arrington and D ave Roberts ' August 9 ,2 0 0 1 10:0 0 a ;m . - 3 :00 p.m

AR226-2274 JOHN BENEDICT - C8 update from air quality Page 1 From : To: D ate: S ubject: Jesse Hanshaw DEE ANN STAATS 4/16/02 5:10PM C8 update from air quality Hi Dee Ann, W e are currently in the process of coordinating our modeling efforts with DuPont.

AR226-2277 Robert I Wevodau 05/21/2002 09:36 AM To: George L Clowes_Jr/CL/DuPont@DuPont, Ravinder Singh/CL/DuPont@DuPont, Michael T Evans/AE,'DuPont@DuPont, Michael G McClusky/AE/DuPont@DuPont, Cynthia E Read/AE/DuPont@DuPont, Ta-Wei Fu/SE/DuPont@DuPont cc: Stephen J Gissy/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPont Subject: C8 Modeling W e are anticipating th at TERA will soon release an annual exposure level for C8.

AR226-2288 C h ris E Shoop 09/04/2002 12:49 PM___________________________ j___ To: Mohammad Rezaei/SE/DuPont@DuPont cc: Ta-Wei Fu/SE/DuPont@DuPont, Robert I Wevodau/SE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@DuPont, Debbie J Mulrooney/AE/DuPont@DuPont Subject FE P Stack Locations Mo, P e r our conversation, here's the sheet we assem bled for the m odeling o f C -8 em issions.