/1IUX-0M7 ACUTE TOXICITY TO AQUATIC PLANTS (ALGAE) TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-109, FC-109-X or R1904.

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STU D Y T IT L E Extraction of Potassium Perfluorooctanesulfonate from Egg Membrane, Albumen, and Yolk for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STU D Y D IR EC TO R Sean Gallagher STUDY COM PLETED ON September 06,2001 PER FO R M IN G LA BO R A TO R Y / TE ST IN G FA C IL IT Y Centre Analytical Laboratories, Inc.

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AR226-2282 t iTM -, Debbie J Mulrooney 05/03/2002 03:23 PM To: D JRO BERTS@ m ail.dep,state.w v.us cc: Bernard J Reiliy/AE/DuPont@DuPonL Robert F Pinchot/DEV/AE/DuPont@DoPont Subject Little Hocking Receptor Grid Dave, In our meeting in Charleston last w eek you asked if 1could provide to you the receptor grid that I used for modeling deposition in the Little Hocking watershed (as shown in Figure 3 in our draft report).

AR226-2293 Oebbte J Mulrooney 11/04/2002 12:16 PM cc:To: Catherine A Barton/AE/DuPont@ DuPont Subject FYI (C8 Modeling) - Permit Determination - Discussion with DAQ ------------------- Forwarded by Debbie J Mulrooney/AE/DuPont on 11/04/200212:15 P M Robert L Ritchey 11/04/2002 10:30 A M To: Kart G Kronberg/AE/DuPont DuPont, Michael T Evans/AE/DuPont@DuPont, John E Crum/SE/DuPont@DuPont cc: David F Altman/SE/DuPont@ DuPont, Andrea V Malinowski/AE/DuPont DuPont, M.

AR226-2310 Charles J Zarzecki 03/13/2003 11:02 AM To: Catherine A Barton/AE/DuPont cc: Subject: Re: Our stance on actual sampling Q C a th ie , Actual sampling w ill show low er numbers.

AR226-2395 INTEROFFICE MEMORANDUM Dates From: Dept: Tel No: ii~May~19B8 10:03am ANTHONY J.

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AR226-2511 Akito Abe 04/01/2002 09:46 PM To: Stephen R Peck/SE/DuPont@DuPont cc: Yoshihiro Hayatsu/PO/DuPont@DuPont, Hidetaka Hiromatsu/PO/DuPont@DuPont, Paul K Mathur/CL/DuPont@DuPont, Ta-Wet Fu/SE/DuPont@DuPont Subject: C-8 analysis at W W lab Steve, l imagine you had enjoyed in your Easter holidays.

AR226-2517 Mark E Reeder 05/21/2002 09:20 A M To: Michael G McClusky/AE/DuPont@DuPont cc: Ta-Wel Fu/SE/DuPont@ DuPont Subject: Water Samples The C-8 results on the float tank samples you submitted are listed below.