January 9, 2009 Via Federal Express Document Processing Center (Mail Code 7407M) Room 6428 Attention : 8(e) Coordinator Office of Pollution Prevention and Toxics U.S.

Taft/ 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 ~-1 "a - 01Dr 37 S ~~.aa~-3~g~ March 20, 2009 ~f~ 3f ~ ( f~ TSCA Confidential Business Information Center (7407M) I EPA East - Room 6428, Attn: Section 8(e) & FYI U.S.

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AR226-0 206 3E M nvir Labo oratn ory mental Final Report- Analytical Study Single-Dose Intravenous Pharmacokinetic Study of T-6054 in Rabbits In-Vivo Study Reference Number:HWI#6329-138 Study Number: AMDT-122094.2 Test Substance: FC-129 (T-6054) Name and Address of Sponsor: 3M SCD Division 367 Grove Street St.

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329 ff AR226- 1077 DRAFT HAZARD ASSESSMENT OF PERFLUOROOCTANOIC ACID AND ITS SALTS OfUf.iSc.eEonfvPiorlolnumtieonntaPlrePvreontteicotnioannAdgTeonxciycs Risk Assessment Division February 20, 2002 es0e0i PREFACE.

^ 6_ 36/ Management Strategy for four new fluorotelomer based substances Consultation meeting on PFCA Action Plan February 2006 000065 Overview Need for Action Exposure Sources Considerations Proposed Objectives Proposed Risk Management Actions Next Steps Page 2 000066 p to Need for Action Assessment of four new fluorotelomer based substances notified under New Substances Notification Regulations Concerns: Sources o f long-chain PFCAs : persistent, bioaccumulative, adverse effects, increasing concentrations in Arctic mammals.

TSCA Document Processing Center Attn: Section 8(e)/FYI M2.Z6 - 373V August 10,2006 Page 4 of 10 Attachment 1 July 19, 2006 "Note for settling parties" from the Science Panel (1 page) Note for settling parties We have prepared some outline protocols for several interlinked research components addressing the potential health effects of exposure to C8 around the Washington Works plant.

September 29,2006 Page 3 ATTACHMENT 2 Tables and excerpts from the draft protocols that contain raw data C-8 blood levels.