p. 1 ~_ -- ~Ra~6 _ .~68 3 INTERIM REPORT # 23 - Atahmls of Sediment Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Pcc fluorobexaaesulfonate (PFHS), and Perfluoroocianesulfonate (PFOS) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using.

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p. 1 -37S5 Sanitized Version for th e AR-226 Public Printed Copy Fil e (CBI removed; copy restricted materials included as read only) Index DOCUMENT DESCRIPTION NO.

p. 1 / 70 ACUTE TOXICITY TO FROG TADPOLES (Spring Peeper ) TEST SUBSTANCE n 7 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 : The test substance is a white powder .

T6ft/ Taft Stettinius & Hollister LLP 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 BILOTT 513.357 .9638 bilott@taftlaw .com ~~ ++Q -~0-373 ~4~a~.s- 3qoa, July 14, 2009 TSCA Confidential Business Information Center (7407M) EPA East - Room 6428, Attn : Section 8(e) & FYI U .S .

BIODEGRADATION TEST SUBSTANCE Identity: FPeCr-f9l5u.or(o1o-cOtacnteasnuelsfuolnfaotnei;c amcaiyd,a1l,s1o,2b.e2,r3e,f3e.r4r,e4d,5t,o5a.6s,6P,F7.O7S.8.o8r8- heptadecafiuoro-, potassium salt, CAS# 2795-39-3) Remarks field: The test substance is a white powder of uncharacterized purity.

ARI26-0093 AN ACTIVATED SLUDGE, RPFEOSSP:IRATION INHIBITION TEST Jrap-- WILDLIFE INTERNATIONAL LTD, PROJECT NUMBER: 4546-101 3M LAB REQUEST NUMBER: U2723 aursons I, R.

g An Official Journalofthe SER RN Supplement Ct AR226-017 BEST COPY AVAILABLE A

- Attachments to Letter to C.

lo Submitted to: BIOSEARCH, INC. pc. box 8598 philsdelphis, pennsylvania 19101 telephone: (215) 848-4499 Project Number - 78-1161A 33H CCoemnptaenry St.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: N-Ethylperfluorooctanesulfonamide; may also be referred to as U1464, EtFOSA, EtPOSA, F-6309, or FX-12. (1Octanesulfonamide, 1,1,2.2,3,3,4.4,6,5.6,6.7.7.8,8.8heptadecafluoro-N-ethyl-, CAS # 4151-50-2) Remarks: Material is a white solid, lot 505 (cc842-3, F6309, L-1089).

AR 126-0065 a Centre Analytical Laboratories, Inc.

PRIZE 20% 7 CHRONIC TOXICITY TO FRESHWATER INVERTABRATES (Daphnia magna) TESTSUBSTANCE Identity: Perfluorooctanesulfonate; FC-95. (1-Octanesulfonic may acid, a1l,s1o,2b,e2.r3e,f3e,r4r,e4d,5t,o5,a6s.6P,7F.O7,S8.o8r.8- heptadecafluoro-, potassium salt, CAS# 2795-38-3) 3ReMmlaort knsu:mbTehre21l7e.st sSuabmsptlaencweaiss astwohrietdeupnodwedrera.mbiSeanmtpcloendwiatsiontsakperniofrrtoom etelsetmienng.taPluraintayldyesteesrmteicnhendiqtuoesb.e 90.49% by LC/MS, 'H-HMR, '*F-NMR and METHOD Method: 1193-87 OPPTS 850.1300, OECD Guideline 211, and ASTM Standard E Type: Semi-Static Life-Cycle Toxicity GLP: Yes YSpeeacriceosm:pDlaepthendi:aSmtaugdynacompleted 1999.

AR226-0132 G-s Final Report .

, 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY Protocol for Study No.