AR226-2251 Catherine A Barton ^ 01/30/2002 05:12 PM To: cc: Subject: Mark H Russell/AE/DuPont@DuPont Robert F Pinchot/DEV/AE/DuPont@DuPont, Andrew S Hartten/AE/DuPont@DuPont, Theodore H Carski/AE/DuPontQDuPont Re: Draft modeling report Q Mark, Thanks so much for your great work.

AR226-2405 INTEROFFICE MEMORANDUM TO: Mi Hi am E.

AR226-2445 l"^"?"

AR226-2455 Ohio River monthly average flows at Cincinnati, OH River flow data from <np://wwwJrd-wc.usace.army.mil/MonthlyJrtm/> Assume: 1 fl3/sec= 0.0283m3/sec; 1 m3 = 1*10"6 om3; 1 cm3 s 1 mL E stimated Estimated Estimated ftMeasured Lorig-term normal normal normal Estimated Mo-Yr flow, ft3/sec of iwrmat, % flow, ft3/sec flow, m3/sec flow, m3/mo normal flow, Urno Jun-96 131.400 175 75086 2.12E+03 5.51E+09 5.51E+12 Jul-98 94.452 211 44764 1.27E+03 S.39E+09 3.39R+12 Aug-98 28,387 80 35484 1.00E+03 2.69E+09 2.69E+12 Sep-98 21,200 74 28649 8.11E+02 2.10E+09 2.10E+12 Ocl.98 21,065 77 27357 7.74E+02 2.07E+09 2.07E+12 Nov-98 21,400 40 53500 1.51E+03 3.92E+09 3.92E+12 Dec'98 34,548 35 98709 2.79E+03 7.48E+09 7.48E+12 Jan-89 178,190 131 136023 3.85E+03 1.03E+10 1.03E+13 Feb-99 134,860 81 166494 4.71E+03 1.146+10 1.146+13 Mar-99 180.260 85 212071 6.00E+03 1.61E+10 1.61E+13 Apr-69 118000 66 178788 5.06E+03 1.31E+10 1.31E+13 May-99 60226 49 122910 3.48E+03 9.32E+09 9.32E+12 Total 1.02E+06 1.18E+06 3.34E+04 8.74E+10 8.74E+13 C8 discharge to Ohio River in1996,!

RECYCLED IX^..JJiI AR226-2620 \ DuPont Telomer Manufaturing Sites: Environmental Assessment of PFOA Levels in Air and Water - Appendix D (November, 2004) Appendix D AR226-2620 Supplemental Data Report to: DUPONT TELOMER MANUFACTURING SITES: ENVIRONMENTAL ASSESSMENT OF PFOA LEVELS IN AIR AND WATER (September, 2003) Draft Page 1 DuPont Telomer Manufaturing Sites: Environmental Assessment ofPFOA Levels in Air and Water-Appendix D (November, 2004) Additional Data Note all data highlighted in yellow has been reported in the original report - DuPont Telomer Manufacturing Sites: Environmental Assessment ofPFOA Levels in Air and Water (September, 2003).

AR226-2634 d > i AR226-2634 JANUARY 2003 BASELINE C-8 SAMPLING DUPONT FAYETTEVILLE WORKS FAYETTEVILLE, NORTH CAROLINA Date: March 2003 Project No.: 18983753.00037 ^ CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 January 2003 Baseline C-8 Sampling Introduction During the week of January 27th 2003, ground-water was sampled from four monitoring wells at the DuPont Fayetteville Works.

AR226-2688 10 AR226-2688 .^6- 11^ BIODEGRAOATION STUDY REPORT Revision 1 Wednesday, November 06,2002 ';'.'"'' '' '." '. 7

AR226-2748 Material Submitted by: Copies to: I.

AR226-2802 TRADE SECRET Study Title H-24648 and H-24020: Repeated-Dose Oral Toxicity Study 14-Day Feeding Study in Mice Laboratory Project ID: DuPont-5206 AUTHOR: Susan A.

AR226-2824 ^^c>"^/^^ International Research and Development Corporation SPONSOR: E.I. duPont de Nemours and Company SUBJECT: Ninety-Day Feeding Study in the Rat.- Francix X.

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TRADE SECRET AR226-3076 Study Title H-22762: SKIN IRRITATION TEST IN RABBITS LABORATORY PROJECT ID: HL-1997-00716 AUTHOR: Carol Finlay, B.A.

TRADE SECRET AR226-3159 Study Title H-23926: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-2920 AUTHOR: Carol Finlay, B.A.

AR226-3169 TRADE SECRET Study Tide H-24615: Static, Acute, 96-Hour Screening Test with Pimephales promelas Laboratory Project ID: DuPont-5019 AUTHOR: Robert A.

AR226-3376 HASKELL LABORATORY Common Name: Ammonium Perfluorooctanoate (C-8) Chemical Name: Octanoic add, pentadecafluoro-, ammonium salt CAS Registry No.: 3825-26-1 Chemical Structure: 0 Physical Properties: CFa - CFz - CFz - CFz - CF2 - CFz - CFz - C- 0-^4 Form: Molecular Weight: Boiling Point: Melting Point: Density: White powder 431 Sublimes @110C Drinking Water Guideline (CEGw) lug/L General Toxicity Ammonium perfluorooctanoate (C-8) has moderate acute oral toxicity with an LD50 in rats of 470 mg/kg|b----Ul981b).