Katherine E.

ARa%-olHl 3M MEDICAL DEPARTMANT CORPORATE TOXICOLOGY To: John Butenhoff Andrew Seacat From: Marvin Case Date: 5 April 2000 Subject: Liver Slide Review I have completed my microscopic review of the liver sections of the 14-week sacrifice rats on the PFOS chronic study.

PFOA Attachments to Letter to C.

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NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 & ?

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NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 TAFT, STETTINIUS & HOLLISTER LLP 425 WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 513-381-2838 FAX: 513-381-0205 www.taftlaw.com 4 R & & G - llf-lf- CLEVELAND OHIO OFFICE 3500 BP TOWER 200 PUBLIC SQUARE CLEVELAND, OHIO 44114-2302 216-241-2838 FAX. 216-241-3707 COLUMBUS, OHIO OFFICE 21 EAST STATE STREET COLUMBUS, OHIO 43215-4221 614-221-2838 FAX:614-221-2007 Ro b e r ta .

DuPont-13267 - ^ < 2*2 /6S2> Study Title Ammonium Perfluorooctanoate: Age Effect on the Plasma Concentration in Post-Weaning Rats Following Oral Gavage A u t h o r : Xing Han, Ph.D.

Protein B inding o f Perfluorohexane Sulfonate, Perfiuorooctane Sulfonate and Perfluorooctanoate to Plasm a (H um an, R at, and M onkey), and V arious H um an-D erived Plasm a P ro tein Fractions STUDY ID : 9921.7 Southern R esearch Institute 2000 N inth Avenue South P.O.

STUDY TITLE Extraction of Potassium Perfluorooctanesulfonate from Egg Membrane, Albumen, and Yolk for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher STUDY COMPLETED ON September 06,2001 PERFORMING LABORATORY / TESTING FACILITY Centre Analytical Laboratories, Inc.

Report E01-1256 PFOS: A Reproduction Study with the Mallard Study Title Analytical Phase R eport for PFOS: A Repro ductio n Stu d y w ith the Mallard Data Requirement FIFRA Subdivision E, Section 71-4 OECD Guideline 206 Author Lisa A.

AR226-2201 Si f3?

TRADE SECRET AR226-3163 DuPont-4594 Study Title H-24159: Static, Acute, 96-Hour Screening Test with Pimephales promelas Laboratory Project ID: DuPont-4594 A u t h o r : Robert A.

II 3M 4R.8.H6- r r 3M G eneral O ffices .

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