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ENVIRONMENTAL ENGR.

PERFLUOROOCTANESULFONATE, POTASSIUM SALT (PFOS): A 96-HOUR STATIC ACUTE TOXICITY TEST WITH THE RAINBOW TROUT (Oncorhynchusmykiss) FINAL REPORT WILDLIFE INTERNATIONAL, LTD.

AR226-1486 ENVIRONMENTAL AND HEALTH ASSESSMENT OF PERFLUOROOCTANE SULFONIC ACID AND ITS SALTS August 20, 2003 Prepared by 3M in consultation with Jack Moore, D.V.M., DABT, Hollyhouse, Inc.

ENVIRONMErNeTiArL LABOERrAtTaOnRY Analytical Report Revised August 12, 2005 Initial Quantitative Screening of Commercial Lots of Human Serum Obtained in 2004 for Endogenous Fluorochemicals Using Protein Precipitation and Liquid Chromatography/Tandem Mass Spectrometry Laboratory Request Number: E05-0120 Testing Laboratory 3M Environmental Health and Safety Operations 3M Environmental Laboratory 3M Environmental Laboratory Project Lead Mark E.

: AR226-1919 H18636: Slide Reviewofpancreas lesions fram DuPont APFO Study DateofReview: 28 November 2001-11-29 Reviewing Pathologists: Dr EE McConnell and DrIR Foster Study No: HN-18636 SWyt1u4d,y6T4i3tl.e: Combined Chronic Toxicity/Oneogenicity Study with Linuron, C8 end Conclusionofthe review: th"eThierfoivnerdailnlgsc.onTclhuesiroenvoifewthceonrfeivrimeewod fthtehcetarwcoinsotguedniiecs ewfafesctthoaftAtPheFyOweirnethneotDiunPcoonnstisstteundty in awnads tchoensmiodsetreHdike0lbyeeaxdpelacnraetaisonedforstehensJiactkioffvointthyaencdoegveenleotpimceneftfoefctpofaAnPFcO raacietnhaaere3tfMfeiscttcsu,dy sctoumdbyisnheodwweidtthhaenfuulnldesrp-ercetprourmotnfgoAfPFthOe-iancdinuacrehdypaecripnlaarspiraotlhiafterwaatisonpsrefsrenotm. hyTpheerpDluasPioant tahsroaurgefhlteoctciaonrocfinionmaad.eqIutsahcoyuilndtbheenoorgtiendatlhtinttehrepcroetmamtieonnotfotnuesntuddyeburtrmeerepilsyonroretfiltenctitesnntdheged. . yefaacrtsthsatiknnotwhlcee3deMge,santdwdaiusscrriedmpionratytedi.onAoffhienaslecsuobtlne pfanciroerafttimicsalcesotinocnilsu,sohiaonsnadavwaanictesdaimnotrhee exteasive reviewofthe pancreas slides from the 3M study to be carried out by Dr McComnell.

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TAFT, STETTINIUS 8 HOLLISTER LLP 425 WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 513-381-283a FAX: 513-381-0205 www.taftlaw.com ROBERT A.

, i TesfReajilts AR226-2123 file:///C|/WINDOWS/TEMP/C-8-FC-143 Area 1-8-89 - 8-7-fll.htot TestResults Sample Date Range Concentration Range .

AR226-2178 Chris E Shoop 08/16/2001 03:27 PM To: cc: Subject: Debbie J Mulrooney/AE/DuPont@DuPont Building Heights, etc.

AR226-2271 CITTr--"" ' ^ DebbiBJMulrooney 04/04Q00201:17PM To: cc: Subject Robert F Pinchot/DEV/AE/DuPont@DuPont Bernard J Reilly/ABDuPont@DuPont Deposition Results and Modeling Report @l Rob, Here are the deposition results for the 2003 emissions for Little Hocking and Lake Washington: Watershed Deposition Results - 2003 Emissio Also, here is the final modeling report: Final Modeling Report.di RP026414 EID582607

AR226-2295 ^ Paul J Bossert 01/28/2003 05:05 PM To: cc: Subject Gerald L Kennedy/AE/DuPont@DuPont, Robert W Rickard/AE/DuPont@DuPont Catherine A Barton/AE/DuPont@DuPont, David M Rurak(AE/DiiPont@DuPont, John R Bowman/AE/DuPont@DuPont, M.

AR226-2316 / Charles J Zarzecki 03/20/2003 08:08 AM To: cc: Subjecfc Catherine A Barton/AE/DuPont Re: lookee what I found Q Cathie, The uncertainty is about 2X.

AR226-2347 Relevance of Soil Sampling in Screening Level Assessments PFOA October 22,2003 Discussion Topics Review soil sampling key learning^ Present site screening level assessmen conceptual model Messages For Today Soil sampling is not critical to site scre level assessments designed to evaluate overall human and environmental expo at a PFOA use facility.