Attachments to Letter to C.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Remarks: N-Ethylperfluorooctanesulfonamide; may also be referred to as NPFOSA, EtPOSA, F-6309, or FX-12. (1-Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-ethyl-, CAS # 4151 50-2) N-EtFOSA was a white solid.

PERFLUOROOCTANESULFONATE, POTASSIUM SALT (PFOS): A 96-HOUR STATIC-RENEWAL ACUTE TOXICITY TEST WITH THE SHEEPSHEAD MINNOW (Cyprinodon variegatus) FINAL REPORT WILDLIFE INTERNATIONAL, LTD.

y L\ ^ * DuPont Haskell VFn. f.

iogr~ 3M Company EPI-OOli Page 1 of 42 FINAL REPORT Epidemiology Medical Department 3M Company St.

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3M Katherine E Reed, Ph.D.

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

C lariant CBI M eeting, A pril 2,2003 NAME tA nranrA :A h n/!

AR226-1307-5 Summary * APFO reproductive effects, 8/23/2002 Created By:Nancy S Selzer on 10/07/2002 at 01:47 PM Document Category: Mammalian Toxicology Testing Sub Category : PFOA Consortium Products Additional Authors: Nancy S Selzer/AE/DuPont Li APFO Reproductive effects summary.d 0 .Edit History: Editor Nancy S Selzer/AE/DuPont Edit Date 10/07/2002 01:48:54 PM *Onlypast five adits are shown 000050 PTDB00OB30 EID613678 DuPont Summary - August 23,2002 Oral (Gavagc) Two-Generation (One Litter Per Generation) Reproduction Study of Ammonium Perfluorooctanoate (APFO) in Rats 3M study conducted at Argus (Argus Study #T-6889.6) The multigeneration reproduction study with APFO has been reviewed and DuPont's position on the study is reported below, in addition to some comments on potential endocrine effects of APFO.

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Telom er Research Program AR226-1420 Report Title: 1-Decanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluoroAlga, Growth Inhibition Test with Scenedesmus subspicatus, 72h, Limit Test with the Saturated Solution Author(s): Dirk Scheerbaum RECEIVED OPPT NCIC 2003 July 18 12:00PM Contractor: Dr.

ZedQ -093RECEIVED OPPT CB1C 03SEP25 September 23, 2003 iSjL*jn / Duftmt Haskell Laboratory for Health and Environmental Sciences Elkton Road.

AR226-1737 Toxicological Summary PFOS Dietary Chronic Pilot Reproductive Study: Mallard Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoropotassium salt, CAS# 2795-39-3 Test Remarks: The test substance is a white powder (3M Lot #217).

FINAL REPORT PROTOCOL 418-028 ORAL (GAVAGE) COMBINED REPEATED DOSE TOXICITY STUDY OF T-7706 WITH THE REPRODUCTION/DEVELOPMENTAL TOXICITY SCREENING TEST SPONSOR'S STUDY NUMBER: T-7706.1 FINAL REPORT DATE: 31 JULY 2003 PROTOCOL 418-028 - ORAL (GAVAGE) COMBINED REPEATED DOSE TOXICITY STUDY OF T-7706 WITH THE REPRODUCTION/DEVELOPMENTAL TOXICITY SCREENING TEST SPONSOR'S STUDY NUMBER: T-7706.1 TABLE OF CONTENTS SUBJECT 1.