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2pco 3M @-33 SKaatheVriinsePEr.esRiedcentt, PhD. 3nMd ESnuvlilryonSmeervnitcaels Technology gGH-R 1102-00373 LEH - 9B0ui0ldBiunsgh4A2.v3e6n.e36 S Raansr ss me Ge343L CERTIFIED MAIL October 30, 2002 AR 26_ 1/38 Contain NO CB) o 5 Document Processing Center (7407M) OEfPfAiceEaofsPt--olRloutoimon6P4r2e8veAntttin:onSaencdtiToonx8i(ccs) U12S00EPPeAnnsylvania Ave, NW Washington, DC 20460-0001 son =o ih i=S uh 5 `TSCA (E) SUBSTANTIAL RISK NOTICE ON: Reference SEHQ ~1180-373, 374 Perfluorohexane sulfonate potassium salt Dear Sir: R3eMprroedcuecnttliyves/pDoenvseolroepdmaennt"aOlraTlox(iGcaivtaygSec)reCeonmibnignTeedstR"eSpteuadtyedofDpoesreflTuooxriocihteyxawniethsutlhfeonate Lpaobtoarsastiourmiessa,ltH(oPrsHhSa)m,, TP-e7n7n0s6y.lvTanhiea.stuTdhyewparselciomnidnuacrtyeddraafttArregsuusltReisncelaurdceh cCehratrailnesfiRnidvienrgs that appear appropriate for TSCA section 8(e) submission.

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.

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AR &86- 1351 Page 1 EpidFemIiNoAloLgyR,E2P2O0-R3TW-05 Medical Department 3M Company St.

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