Taft/ Taft Stettinius & Hollister LLP f 425 Walnut Street, Suite 1800/ Cincinnati, OH 45202-3957 / Tel : 513 .381 .2838 / Fax : 513 .381 .0205 /www.taftlaw.com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing ROBERT A.

: AR226-0102, DIETARY ACUTE MALLARD DUCK STUDY EE-II TEST SUBSTANCE Identity: Perfluorooctanesulionate; FC-95. (1-Octanesulfonic may acid, a1l,s1o,2b.e2,r3e,f3e,r4r,e4d,5t,o5.a6s,6P,7F,O7,S8,o8r,6- heptadecafluoro-, potassium salt, CAS # 2795-39-3) fRreommar3kMs:lot nuTmhbeetres2t17s.ubsStaamnpcleeiswaaswhsittoerepdowudnedre.r Sample ambient was taken conditions NprMioRr taontdesetilnegm.enPutrailtyandaeltyesremsinteedchtnoiqbuees9.0.49% by LC/MS, 'H-HMR, "F- METHOD Method: OPPTS 850.2200, OECD 205, and FIFRA Subdivision E.

ronnie once omaiii wes #R226 _ 1162 TAFT, STETTINIUS & HOLLISTER LLP aoggmonacme 425 WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 Fasx 51m3.38n1.0205 cunnyesisenasgon ond Fait Soups AusS0i0 i wwwtaflaw com aE RSo8os1er3rg6A7e..nB0i8cL%oormT August 26, 2002 = CERTIFIED MAIL NO. 7002 0860 0006 6119 4910 RETURN RECEIPT REQUESTED IclRoISASSuRbCmission Desk 6301 Ivy Lane, Suite 300 Greenbelt, MD 20770 = 33 a 32 Eza 3% 5= Re: IRIS Sa ubmiss sion IN nventoo ry ford Perflg uoroocp tandics Acid-2Amm6 oniuy m Salt IRIS Submission Desk: On April 12. 2002, we submitted information to you in connection with the referenced IRIS Submission Inventory, pursuant to a January 9, 2002 notice in the Federal Register (627 Fed.

AR 226 - 1204 CQonPte DCometCfoCn SAeSacd Seences Analytical Report Willan.

"off AR 226 The Society of the Plastics Industry, Inc.

fR 226 _ 1357 FINAL REPORT `ONE GENERATION REPRODUCTION STUDY OF PFOS - MEVALONIC ACID/CHOLESTEROL CHALLENGE AND NOEL INVESTIGATION IN RATS SPONSOR'S STUDY NUMBER: T-6295.25 FINAL REPORT DATE: 16 DECEMBER 2002 000433 TITLE- ONE GENERATION REPRODUCTION STUDY OF PFOS - MEVALONIC 'ACID/CHOLESTEROL CHALLENGE AND NOEL INVESTIGATION IN RATS ARGUS STUDY NUMBER: 418-018 SPONSOR'S STUDY NUMBER: T-6295.25 SUBJECT ABLE OF CONTENTS PAGE L SUMMARY AND CONCLUSION It A Methods.

ARQ 6 - ISOC FEBRUARY 2003 SURFACE WATER MONITORING REPORT FOR WASHINGTON WORKS FACILITY AND LOCAL, LETART AND DRY RUN LANDFILLS WASHINGTON, WV !

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TOXICITY TO AQUATIC PLANTS (Duckweed, Lemna gibba G3) TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample obtained from 3M production lot number 217.

Page 1 FINAL REPORT Epidemiology, 220-3W-05 Medical Department 3M Company St.

A Pharmacokinetic Study of Potassium Perfluorooctanoate in the Cynomolgus Monkey Southern Research Institute Study ID: 9921.4 January 14,2003 Final Report on A Pharmacokinetic Study of Potassium Perfluorooctanoate in the Cynomolgus Monkey To: 3M Corporation P.O.

FINAL REPORT ONE GENERATION REPRODUCTION STUDY OF PFOS - MEVALONIC ACID/CHOLESTEROL CHALLENGE AND NOEL INVESTIGATION IN RATS SPONSOR'S STUDY NUMBER: T-6295.25 FINAL REPORT DATE: 16 DECEMBER 2002 TITLE - ONE GENERATION REPRODUCTION STUDY OF PFOS - MEVALONIC ACIDKHOLESTEROL CHALLENGE AND NOEL INVESTIGATION IN RATS ARGUS STUDY NUMBER: 4 18-018 SPONSOR'S STUDY NUMBER: T-6295.25 TABLE OF CONTENTS SUBJECT PAGE I.

3M Strategic Toxicology Laboratory Study Title: Acute Inhalation T.oxicokinetic Study of Perfluoroctanesulfonyl Fluoride (POSF) T-7098.4 Test Number (sample): T-7098.4 (Perfluoroctanesulfonyl Laboratory Project Identifi'cation: ST64 In-Life Initiation Date: 5/1/2001 In-Life Completion Date: 5/14/2001 Research Client: 3M Specialty Materials Division 3M Center Building 236 Saint Paul, MN 55133-3220 Fluoride (POSF) Testing Laboratory: 3M Strategic Toxicology Laboratory 3M Center Building 270-SB- 181 Saint Paul, MN 55133-3220 Study Director: Andrew M.

ldlife International, Ltd.

AR226-2048 ^ Ta-Wei Fu 07/30/2001 08:01 AM To: cc: Subject John E Crum/SE/DuPont@DuPont Ta-Wel Fu/CL/DuPont@DuPont, Roger J 2ipfel/AE/DuPont@DuPont Re: C-8 sampling D John, Maybe I did not make my points clear on the phone so I would like to clarify it here: 1.